// Copyright 2017 The Bazel Authors. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//    http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package com.google.devtools.build.lib.rules.objc;

import static com.google.common.collect.ImmutableList.toImmutableList;
import static com.google.common.collect.MoreCollectors.onlyElement;
import static com.google.common.truth.Truth.assertThat;
import static com.google.common.truth.Truth.assertWithMessage;
import static com.google.devtools.build.lib.actions.util.ActionsTestUtil.baseArtifactNames;
import static com.google.devtools.build.lib.rules.apple.AppleBitcodeConverter.INVALID_APPLE_BITCODE_OPTION_FORMAT;
import static com.google.devtools.build.lib.rules.objc.CompilationSupport.ABSOLUTE_INCLUDES_PATH_FORMAT;
import static com.google.devtools.build.lib.rules.objc.CompilationSupport.BOTH_MODULE_NAME_AND_MODULE_MAP_SPECIFIED;
import static com.google.devtools.build.lib.rules.objc.ObjcProvider.CC_LIBRARY;
import static com.google.devtools.build.lib.rules.objc.ObjcProvider.LIBRARY;
import static com.google.devtools.build.lib.rules.objc.ObjcProvider.SDK_DYLIB;
import static com.google.devtools.build.lib.rules.objc.ObjcProvider.SDK_FRAMEWORK;
import static com.google.devtools.build.lib.rules.objc.ObjcProvider.WEAK_SDK_FRAMEWORK;
import static com.google.devtools.build.lib.rules.objc.ObjcRuleClasses.NON_ARC_SRCS_TYPE;
import static com.google.devtools.build.lib.rules.objc.ObjcRuleClasses.SRCS_TYPE;
import static org.junit.Assert.assertThrows;

import com.google.common.base.Joiner;
import com.google.common.base.Optional;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableSet;
import com.google.common.collect.Iterables;
import com.google.devtools.build.lib.actions.Action;
import com.google.devtools.build.lib.actions.ActionAnalysisMetadata;
import com.google.devtools.build.lib.actions.ActionExecutionException;
import com.google.devtools.build.lib.actions.Artifact;
import com.google.devtools.build.lib.actions.CommandAction;
import com.google.devtools.build.lib.actions.ExecutionRequirements;
import com.google.devtools.build.lib.actions.util.ActionsTestUtil;
import com.google.devtools.build.lib.analysis.ConfiguredTarget;
import com.google.devtools.build.lib.analysis.FilesToRunProvider;
import com.google.devtools.build.lib.analysis.OutputGroupInfo;
import com.google.devtools.build.lib.analysis.RunfilesProvider;
import com.google.devtools.build.lib.analysis.config.BuildConfiguration;
import com.google.devtools.build.lib.analysis.config.CompilationMode;
import com.google.devtools.build.lib.analysis.configuredtargets.RuleConfiguredTarget;
import com.google.devtools.build.lib.analysis.util.AnalysisMock;
import com.google.devtools.build.lib.analysis.util.ScratchAttributeWriter;
import com.google.devtools.build.lib.cmdline.RepositoryName;
import com.google.devtools.build.lib.collect.nestedset.NestedSet;
import com.google.devtools.build.lib.packages.NoSuchTargetException;
import com.google.devtools.build.lib.packages.util.MockObjcSupport;
import com.google.devtools.build.lib.rules.apple.AppleToolchain;
import com.google.devtools.build.lib.rules.cpp.CcCompilationContext;
import com.google.devtools.build.lib.rules.cpp.CcInfo;
import com.google.devtools.build.lib.rules.cpp.CcLinkingContext;
import com.google.devtools.build.lib.rules.cpp.CcLinkingContext.LinkerInput;
import com.google.devtools.build.lib.rules.cpp.CcToolchainProvider;
import com.google.devtools.build.lib.rules.cpp.CppCompileAction;
import com.google.devtools.build.lib.rules.cpp.CppLinkAction;
import com.google.devtools.build.lib.rules.cpp.CppRuleClasses;
import com.google.devtools.build.lib.rules.cpp.LibraryToLink;
import com.google.devtools.common.options.OptionsParsingException;
import java.util.List;
import java.util.Set;
import org.junit.Ignore;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;

/** Test case for objc_library. */
@RunWith(JUnit4.class)
public class ObjcLibraryTest extends ObjcRuleTestCase {

  static final RuleType RULE_TYPE = new OnlyNeedsSourcesRuleType("objc_library");
  private static final String WRAPPED_CLANG = "wrapped_clang";
  /** Creates an {@code objc_library} target writer. */
  @Override
  protected ScratchAttributeWriter createLibraryTargetWriter(String labelString) {
    return ScratchAttributeWriter.fromLabelString(this, "objc_library", labelString);
  }

  @Test
  public void testConfigTransitionWithTopLevelAppleConfiguration() throws Exception {
    scratch.file("bin/BUILD",
        "objc_library(",
        "    name = 'objc',",
        "    srcs = ['objc.m'],",
        ")",
        "cc_binary(",
        "    name = 'cc',",
        "    srcs = ['cc.cc'],",
        "    deps = [':objc'],",
        ")");

    useConfiguration("--apple_platform_type=ios", "--cpu=ios_x86_64");

    ConfiguredTarget cc = getConfiguredTarget("//bin:cc");
    Artifact objcObject = ActionsTestUtil.getFirstArtifactEndingWith(
        actionsTestUtil().artifactClosureOf(getFilesToBuild(cc)), "objc.o");
    assertThat(objcObject.getExecPathString()).contains("ios_x86_64");
  }

  @Test
  public void testFilesToBuild() throws Exception {
    ConfiguredTarget target =
        createLibraryTargetWriter("//objc:One")
            .setAndCreateFiles("srcs", "a.m", "b.m", "private.h")
            .write();

    NestedSet<Artifact> files = getFilesToBuild(target);
    assertThat(Artifact.toRootRelativePaths(files)).containsExactly("objc/libOne.a");
  }

  @Test
  public void testCompilesSources() throws Exception {
    createLibraryTargetWriter("//objc/lib1")
        .setAndCreateFiles("srcs", "a.m")
        .setAndCreateFiles("hdrs", "hdr.h")
        .write();

    createLibraryTargetWriter("//objc/lib2")
        .setAndCreateFiles("srcs", "a.m")
        .setAndCreateFiles("hdrs", "hdr.h")
        .setList("deps", "//objc/lib1")
        .write();

    createLibraryTargetWriter("//objc:x")
        .setAndCreateFiles("srcs", "a.m", "private.h")
        .setAndCreateFiles("hdrs", "hdr.h")
        .setList("deps", "//objc/lib2:lib2")
        .write();

    CppCompileAction compileA = (CppCompileAction) compileAction("//objc:x", "a.o");

    assertThat(Artifact.toRootRelativePaths(compileA.getPossibleInputsForTesting()))
        .containsAtLeast("objc/a.m", "objc/hdr.h", "objc/private.h");
    assertThat(Artifact.toRootRelativePaths(compileA.getOutputs()))
        .containsExactly("objc/_objs/x/arc/a.o", "objc/_objs/x/arc/a.d");
  }

  @Test
  public void testSerializedDiagnosticsFileFeature() throws Exception {
    useConfiguration("--features=serialized_diagnostics_file");

    createLibraryTargetWriter("//objc/lib1")
        .setAndCreateFiles("srcs", "a.m")
        .setAndCreateFiles("hdrs", "hdr.h")
        .write();

    createLibraryTargetWriter("//objc/lib2")
        .setAndCreateFiles("srcs", "a.m")
        .setAndCreateFiles("hdrs", "hdr.h")
        .setList("deps", "//objc/lib1")
        .write();

    createLibraryTargetWriter("//objc:x")
        .setAndCreateFiles("srcs", "a.m", "private.h")
        .setAndCreateFiles("hdrs", "hdr.h")
        .setList("deps", "//objc/lib2:lib2")
        .write();

    CppCompileAction compileA = (CppCompileAction) compileAction("//objc:x", "a.o");

    assertThat(Artifact.toRootRelativePaths(compileA.getOutputs()))
        .containsExactly("objc/_objs/x/arc/a.o", "objc/_objs/x/arc/a.d", "objc/_objs/x/arc/a.dia");
  }

  @Test
  public void testCompilesSourcesWithSameBaseName() throws Exception {
    createLibraryTargetWriter("//foo:lib")
        .setAndCreateFiles("srcs", "a.m", "pkg1/a.m", "b.m")
        .setAndCreateFiles("non_arc_srcs", "pkg2/a.m")
        .write();

    getConfiguredTarget("//foo:lib");

    Artifact a0 = getBinArtifact("_objs/lib/arc/0/a.o", getConfiguredTarget("//foo:lib"));
    Artifact a1 = getBinArtifact("_objs/lib/arc/1/a.o", getConfiguredTarget("//foo:lib"));
    Artifact a2 = getBinArtifact("_objs/lib/non_arc/a.o", getConfiguredTarget("//foo:lib"));
    Artifact b = getBinArtifact("_objs/lib/arc/b.o", getConfiguredTarget("//foo:lib"));

    assertThat(getGeneratingAction(a0)).isNotNull();
    assertThat(getGeneratingAction(a1)).isNotNull();
    assertThat(getGeneratingAction(a2)).isNotNull();
    assertThat(getGeneratingAction(b)).isNotNull();

    assertThat(getGeneratingAction(a0).getInputs().toList()).contains(getSourceArtifact("foo/a.m"));
    assertThat(getGeneratingAction(a1).getInputs().toList())
        .contains(getSourceArtifact("foo/pkg1/a.m"));
    assertThat(getGeneratingAction(a2).getInputs().toList())
        .contains(getSourceArtifact("foo/pkg2/a.m"));
    assertThat(getGeneratingAction(b).getInputs().toList()).contains(getSourceArtifact("foo/b.m"));
  }

  @Test
  public void testObjcPlusPlusCompile() throws Exception {
    useConfiguration(
        "--apple_platform_type=ios",
        "--cpu=ios_i386",
        "--ios_cpu=i386",
        "--ios_minimum_os=9.10.11");
    createLibraryTargetWriter("//objc:lib")
        .setList("srcs", "a.mm")
        .write();
    CommandAction compileAction = compileAction("//objc:lib", "a.o");
    assertThat(compileAction.getArguments())
        .containsAtLeast("-stdlib=libc++", "-std=gnu++11", "-mios-simulator-version-min=9.10.11");
  }

  @Test
  public void testObjcPlusPlusCompileDarwin() throws Exception {
    useConfiguration(
        "--cpu=darwin_x86_64",
        "--macos_minimum_os=9.10.11",
        // TODO(b/36126423): Darwin should imply macos, so the
        // following line should not be necessary.
        "--apple_platform_type=macos");
    createLibraryTargetWriter("//objc:lib")
        .setList("srcs", "a.mm")
        .write();
    CommandAction compileAction = compileAction("//objc:lib", "a.o");
    assertThat(compileAction.getArguments())
        .containsAtLeast("-stdlib=libc++", "-std=gnu++11", "-mmacosx-version-min=9.10.11");
  }

  @Test
  public void testCompilationModeDbg() throws Exception {
    useConfiguration(
        "--cpu=ios_i386",
        "--ios_cpu=i386",
        "--compilation_mode=dbg");
    scratch.file("objc/a.m");
    scratch.file(
        "objc/BUILD",
        RULE_TYPE.target(
            scratch,
            "objc",
            "lib",
            "srcs",
            "['a.m']"));

    CommandAction compileActionA = compileAction("//objc:lib", "a.o");

    assertThat(compileActionA.getArguments()).contains("--DBG_ONLY_FLAG");
    assertThat(compileActionA.getArguments()).doesNotContain("--FASTBUILD_ONLY_FLAG");
    assertThat(compileActionA.getArguments()).doesNotContain("--OPT_ONLY_FLAG");
  }

  @Test
  public void testCompilationModeFastbuild() throws Exception {
    useConfiguration(
        "--cpu=ios_i386",
        "--ios_cpu=i386",
        "--compilation_mode=fastbuild");
    scratch.file("objc/a.m");
    scratch.file(
        "objc/BUILD",
        RULE_TYPE.target(
            scratch,
            "objc",
            "lib",
            "srcs",
            "['a.m']"));

    CommandAction compileActionA = compileAction("//objc:lib", "a.o");

    assertThat(compileActionA.getArguments()).doesNotContain("--DBG_ONLY_FLAG");
    assertThat(compileActionA.getArguments()).contains("--FASTBUILD_ONLY_FLAG");
    assertThat(compileActionA.getArguments()).doesNotContain("--OPT_ONLY_FLAG");
  }

  @Test
  public void testCompilationModeOpt() throws Exception {
    useConfiguration(
        "--cpu=ios_i386",
        "--ios_cpu=i386",
        "--compilation_mode=opt");
    scratch.file("objc/a.m");
    scratch.file(
        "objc/BUILD",
        RULE_TYPE.target(
            scratch,
            "objc",
            "lib",
            "srcs",
            "['a.m']"));

    CommandAction compileActionA = compileAction("//objc:lib", "a.o");

    assertThat(compileActionA.getArguments()).doesNotContain("--DBG_ONLY_FLAG");
    assertThat(compileActionA.getArguments()).doesNotContain("--FASTBUILD_ONLY_FLAG");
    assertThat(compileActionA.getArguments()).contains("--OPT_ONLY_FLAG");
  }

  @Test
  public void testCreate_runfilesWithSourcesOnly() throws Exception {
    ConfiguredTarget target =
        createLibraryTargetWriter("//objc:One")
            .setAndCreateFiles("srcs", "a.m", "b.m", "private.h")
            .write();
    RunfilesProvider provider = target.getProvider(RunfilesProvider.class);
    assertThat(baseArtifactNames(provider.getDefaultRunfiles().getArtifacts())).isEmpty();
    assertThat(Artifact.toRootRelativePaths(provider.getDataRunfiles().getArtifacts()))
        .containsExactly("objc/libOne.a");
  }

  @Test
  public void testCreate_noErrorForEmptySourcesButHasDependency() throws Exception {
    createLibraryTargetWriter("//baselib:baselib")
        .setAndCreateFiles("srcs", "a.m", "b.m", "private.h")
        .write();
    createLibraryTargetWriter("//lib:lib")
        .setAndCreateFiles("hdrs", "a.h")
        .setList("deps", "//baselib:baselib")
        .write();
    ObjcProvider provider = providerForTarget("//lib:lib");
    assertThat(provider.get(LIBRARY).toList())
        .containsExactlyElementsIn(archiveAction("//baselib:baselib").getOutputs());
  }

  @Test
  public void testCreate_errorForEmptyFilegroupSources() throws Exception {
    checkError(
        "x",
        "x",
        "does not produce any objc_library srcs files (expected " + SRCS_TYPE + ")",
        "filegroup(name = 'fg', srcs = [])",
        "objc_library(name = 'x', srcs = ['fg'])");
  }

  @Test
  public void testCreate_srcsContainingHeaders() throws Exception {
    scratch.file("x/a.m", "dummy source file");
    scratch.file("x/a.h", "dummy header file");
    scratch.file("x/BUILD", "objc_library(name = 'Target', srcs = ['a.m', 'a.h'])");
    assertThat(view.hasErrors(getConfiguredTarget("//x:Target"))).isFalse();
  }

  @Test
  public void testCreate_headerAndCompiledSourceWithSameName() throws Exception {
    scratch.file("objc/BUILD", "objc_library(name = 'Target', srcs = ['a.m'], hdrs = ['a.h'])");
    assertThat(view.hasErrors(getConfiguredTarget("//objc:Target"))).isFalse();
  }

  @Test
  public void testCreate_errorForCcInNonArcSources() throws Exception {
    scratch.file("x/cc.cc");
    checkError(
        "x",
        "x",
        "'//x:cc.cc' does not produce any objc_library non_arc_srcs files (expected "
            + NON_ARC_SRCS_TYPE
            + ")",
        "objc_library(name = 'x', non_arc_srcs = ['cc.cc'])");
  }

  @Test
  public void testFileInSrcsAndNonArcSources() throws Exception {
    checkError(
        "x",
        "x",
        String.format(CompilationSupport.FILE_IN_SRCS_AND_NON_ARC_SRCS_ERROR_FORMAT, "x/foo.m"),
        "objc_library(name = 'x', srcs = ['foo.m'], non_arc_srcs = ['foo.m'])");
  }

  @Test
  public void testCreate_headerContainingDotMAndDotCFiles() throws Exception {
    scratch.file("x/a.m", "dummy source file");
    scratch.file("x/a.h", "dummy header file");
    scratch.file("x/b.m", "dummy source file");
    scratch.file("x/a.c", "dummy source file");
    scratch.file(
        "x/BUILD", "objc_library(name = 'Target', srcs = ['a.m'], hdrs = ['a.h', 'b.m', 'a.c'])");
    assertThat(view.hasErrors(getConfiguredTarget("//x:Target"))).isFalse();
  }

  @Test
  public void testProvidesObjcHeadersWithDotMFiles() throws Exception {
    ConfiguredTarget target =
        createLibraryTargetWriter("//objc:lib")
            .setAndCreateFiles("srcs", "a.m", "b.m", "private.h")
            .setAndCreateFiles("hdrs", "a.h", "b.h", "f.m")
            .write();
    ConfiguredTarget depender =
        createLibraryTargetWriter("//objc2:lib")
            .setAndCreateFiles("srcs", "a.m", "b.m", "private.h")
            .setAndCreateFiles("hdrs", "d.h", "e.m")
            .setList("deps", "//objc:lib")
            .write();
    assertThat(getArifactPathsOfHeaders(target))
        .containsExactly("objc/a.h", "objc/b.h", "objc/f.m", "objc/private.h");
    assertThat(getArifactPathsOfHeaders(depender))
        .containsExactly(
            "objc/a.h",
            "objc/b.h",
            "objc/f.m",
            "objc/private.h",
            "objc2/d.h",
            "objc2/e.m",
            "objc2/private.h");
  }

  @Test
  public void testMultiPlatformLibrary() throws Exception {
    useConfiguration("--ios_multi_cpus=i386,x86_64,armv7,arm64", "--ios_cpu=armv7");

    createLibraryTargetWriter("//objc:lib")
        .setAndCreateFiles("srcs", "a.m", "b.m", "private.h")
        .setAndCreateFiles("hdrs", "a.h")
        .write();

    assertThat(view.hasErrors(getConfiguredTarget("//objc:lib"))).isFalse();
  }

  @Test
  public void testCompilationActions_simulator() throws Exception {
    useConfiguration("--apple_platform_type=ios", "--cpu=ios_i386", "--ios_cpu=i386");

    scratch.file("objc/a.m");
    scratch.file("objc/non_arc.m");
    scratch.file("objc/private.h");
    scratch.file("objc/c.h");
    scratch.file(
        "objc/BUILD",
        RULE_TYPE.target(
            scratch,
            "objc",
            "lib",
            "srcs",
            "['a.m', 'private.h']",
            "hdrs",
            "['c.h']",
            "non_arc_srcs",
            "['non_arc.m']"));

    CommandAction compileActionA = compileAction("//objc:lib", "a.o");
    CommandAction compileActionNonArc = compileAction("//objc:lib", "non_arc.o");

    assertRequiresDarwin(compileActionA);
    assertThat(compileActionA.getArguments())
        .contains("tools/osx/crosstool/iossim/" + WRAPPED_CLANG);
    assertThat(compileActionA.getArguments())
        .containsAtLeast("-isysroot", AppleToolchain.sdkDir())
        .inOrder();
    assertThat(compileActionA.getArguments())
        .containsAtLeastElementsIn(AppleToolchain.DEFAULT_WARNINGS.values());
    assertThat(compileActionA.getArguments())
        .containsAtLeastElementsIn(CompilationSupport.DEFAULT_COMPILER_FLAGS);
    assertThat(compileActionA.getArguments())
        .containsAtLeastElementsIn(CompilationSupport.SIMULATOR_COMPILE_FLAGS);
    assertThat(compileActionA.getArguments()).contains("-fobjc-arc");
    assertThat(compileActionA.getArguments()).containsAtLeast("-c", "objc/a.m");
    assertThat(compileActionNonArc.getArguments()).contains("-fno-objc-arc");
    assertThat(compileActionA.getArguments()).containsAtLeastElementsIn(FASTBUILD_COPTS);
    assertThat(compileActionA.getArguments())
        .contains("-mios-simulator-version-min=" + DEFAULT_IOS_SDK_VERSION);
    assertThat(compileActionA.getArguments()).contains("-arch i386");
  }

  @Test
  public void testCompilationActions_device() throws Exception {
    useConfiguration("--apple_platform_type=ios", "--cpu=ios_armv7", "--ios_cpu=armv7");

    scratch.file("objc/a.m");
    scratch.file("objc/non_arc.m");
    scratch.file("objc/private.h");
    scratch.file("objc/c.h");
    scratch.file(
        "objc/BUILD",
        RULE_TYPE.target(
            scratch,
            "objc",
            "lib",
            "srcs",
            "['a.m', 'private.h']",
            "hdrs",
            "['c.h']",
            "non_arc_srcs",
            "['non_arc.m']"));

    CommandAction compileActionA = compileAction("//objc:lib", "a.o");
    CommandAction compileActionNonArc = compileAction("//objc:lib", "non_arc.o");

    assertRequiresDarwin(compileActionA);
    assertThat(compileActionA.getArguments()).contains("tools/osx/crosstool/ios/" + WRAPPED_CLANG);
    assertThat(compileActionA.getArguments())
        .containsAtLeast("-isysroot", AppleToolchain.sdkDir())
        .inOrder();
    assertThat(compileActionA.getArguments())
        .containsAtLeastElementsIn(AppleToolchain.DEFAULT_WARNINGS.values());
    assertThat(compileActionA.getArguments())
        .containsAtLeastElementsIn(CompilationSupport.DEFAULT_COMPILER_FLAGS);
    assertThat(compileActionA.getArguments())
        .containsNoneIn(CompilationSupport.SIMULATOR_COMPILE_FLAGS);

    assertThat(compileActionA.getArguments()).contains("-fobjc-arc");
    assertThat(compileActionA.getArguments()).containsAtLeast("-c", "objc/a.m");

    assertThat(compileActionNonArc.getArguments()).contains("-fno-objc-arc");
    assertThat(compileActionA.getArguments()).containsAtLeastElementsIn(FASTBUILD_COPTS);
    assertThat(compileActionA.getArguments())
        .contains("-miphoneos-version-min=" + DEFAULT_IOS_SDK_VERSION);
    assertThat(compileActionA.getArguments()).contains("-arch armv7");
  }

  @Test
  public void testArchivesPrecompiledObjectFiles() throws Exception {
    scratch.file("objc/a.m");
    scratch.file("objc/b.o");
    scratch.file("objc/BUILD", RULE_TYPE.target(scratch, "objc", "x", "srcs", "['a.m', 'b.o']"));
    assertThat(Artifact.toRootRelativePaths(archiveAction("//objc:x").getInputs()))
        .contains("objc/b.o");
  }

  @Test
  public void testCompileWithFrameworkImportsIncludesFlags() throws Exception {
    addBinWithTransitiveDepOnFrameworkImport();
    CommandAction compileAction = compileAction("//lib:lib", "a.o");

    assertThat(compileAction.getArguments()).doesNotContain("-framework");
    assertThat(Joiner.on("").join(compileAction.getArguments())).contains("-Ffx");
  }

  @Test
  public void testPrecompiledHeaders() throws Exception {
    scratch.file("objc/a.m");
    scratch.file("objc/c.pch");
    scratch.file(
        "objc/BUILD",
        RULE_TYPE.target(
            scratch, "objc", "x", "srcs", "['a.m']", "non_arc_srcs", "['b.m']", "pch", "'c.pch'"));
    CppCompileAction compileAction = (CppCompileAction) compileAction("//objc:x", "a.o");
    assertThat(Joiner.on(" ").join(compileAction.getArguments()))
        .contains("-include objc/c.pch");
    assertThat(Artifact.toRootRelativePaths(compileAction.getPossibleInputsForTesting()))
        .contains("objc/c.pch");
  }

  @Test
  public void testCompilationActionsWithCopts() throws Exception {
    useConfiguration("--apple_platform_type=ios", "--cpu=ios_i386", "--ios_cpu=i386");

    scratch.file(
        "objc/defs.bzl",
        "def _var_providing_rule_impl(ctx):",
        "   return [",
        "       platform_common.TemplateVariableInfo({",
        "        'FOO': '$(BAR)',",
        "        'BAR': ctx.attr.var_value,",
        "        'BAZ': '$(FOO)',",
        "      }),",
        "   ]",
        "var_providing_rule = rule(",
        "   implementation = _var_providing_rule_impl,",
        "   attrs = { 'var_value': attr.string() }",
        ")");

    scratch.file(
        "objc/BUILD",
        "load('//objc:defs.bzl', 'var_providing_rule')",
        "var_providing_rule(",
        "    name = 'set_foo_to_bar',",
        "    var_value = 'bar',",
        ")",
        "objc_library(",
        "    name = 'lib',",
        "    srcs = ['a.m', 'b.m', 'private.h'],",
        "    hdrs = ['c.h'],",
        "    copts = ['-Ifoo', '--monkeys=$(TARGET_CPU)', '--gorillas=$(FOO),$(BAR),$(BAZ)'],",
        "    toolchains = [':set_foo_to_bar']",
        ")");

    CommandAction compileActionA = compileAction("//objc:lib", "a.o");
    assertThat(compileActionA.getArguments())
        .containsAtLeast("-Ifoo", "--monkeys=ios_i386", "--gorillas=bar,bar,bar");
  }

  @Test
  public void testObjcCopts() throws Exception {
    useConfiguration("--objccopt=-foo");
    createLibraryTargetWriter("//lib:lib")
        .setAndCreateFiles("srcs", "a.m", "b.m", "private.h")
        .write();
    List<String> args = compileAction("//lib:lib", "a.o").getArguments();
    assertThat(args).contains("-foo");
  }

  @Test
  public void testObjcCopts_argumentOrdering() throws Exception {
    useConfiguration("--objccopt=-foo");
    createLibraryTargetWriter("//lib:lib")
        .setAndCreateFiles("srcs", "a.m", "b.m", "private.h")
        .setList("copts", "-bar")
        .write();
    List<String> args = compileAction("//lib:lib", "a.o").getArguments();
    assertThat(args).containsAtLeast("-fobjc-arc", "-foo", "-bar").inOrder();
  }

  @Test
  public void testBothModuleNameAndModuleMapGivesError() throws Exception {
    checkError(
        "x",
        "x",
        BOTH_MODULE_NAME_AND_MODULE_MAP_SPECIFIED,
        "objc_library( name = 'x', module_name = 'x', module_map = 'x.modulemap' )");
  }

  @Test
  public void testCompilationActionsWithEmbeddedBitcode() throws Exception {
    useConfiguration(
        "--apple_platform_type=ios", "--ios_multi_cpus=arm64", "--apple_bitcode=embedded");
    createLibraryTargetWriter("//objc:lib")
        .setAndCreateFiles("srcs", "a.m", "b.m", "private.h")
        .setAndCreateFiles("hdrs", "c.h")
        .write();

    CommandAction compileActionA = compileAction("//objc:lib", "a.o");

    assertThat(compileActionA.getArguments()).contains("-fembed-bitcode");
  }

  @Test
  public void testCompilationActionsWithEmbeddedBitcodeMarkers() throws Exception {
    useConfiguration(
        "--apple_platform_type=ios", "--ios_multi_cpus=arm64", "--apple_bitcode=embedded_markers");

    createLibraryTargetWriter("//objc:lib")
        .setAndCreateFiles("srcs", "a.m", "b.m", "private.h")
        .setAndCreateFiles("hdrs", "c.h")
        .write();

    CommandAction compileActionA = compileAction("//objc:lib", "a.o");

    assertThat(compileActionA.getArguments()).contains("-fembed-bitcode-marker");
  }

  @Test
  public void testCompilationActionsWithNoBitcode() throws Exception {
    useConfiguration("--apple_platform_type=ios", "--ios_multi_cpus=arm64", "--apple_bitcode=none");

    createLibraryTargetWriter("//objc:lib")
        .setAndCreateFiles("srcs", "a.m", "b.m", "private.h")
        .setAndCreateFiles("hdrs", "c.h")
        .write();

    CommandAction compileActionA = compileAction("//objc:lib", "a.o");

    assertThat(compileActionA.getArguments()).doesNotContain("-fembed-bitcode");
    assertThat(compileActionA.getArguments()).doesNotContain("-fembed-bitcode-marker");
  }

  /**
   * Tests that bitcode is disabled for simulator builds even if enabled by flag.
   */
  @Test
  public void testCompilationActionsWithBitcode_simulator() throws Exception {
    useConfiguration(
        "--apple_platform_type=ios", "--ios_multi_cpus=x86_64", "--apple_bitcode=embedded");

    createLibraryTargetWriter("//objc:lib")
        .setAndCreateFiles("srcs", "a.m", "b.m", "private.h")
        .setAndCreateFiles("hdrs", "c.h")
        .write();

    CommandAction compileActionA = compileAction("//objc:lib", "a.o");

    assertThat(compileActionA.getArguments()).doesNotContain("-fembed-bitcode");
    assertThat(compileActionA.getArguments()).doesNotContain("-fembed-bitcode-marker");
  }

  @Test
  public void testCompilationActionsWithEmbeddedBitcodeForMultiplePlatformsWithMatch()
      throws Exception {
    useConfiguration(
        "--apple_platform_type=ios",
        "--ios_multi_cpus=arm64",
        "--apple_bitcode=ios=embedded",
        "--apple_bitcode=watchos=embedded");
    createLibraryTargetWriter("//objc:lib")
        .setAndCreateFiles("srcs", "a.m", "b.m", "private.h")
        .setAndCreateFiles("hdrs", "c.h")
        .write();

    CommandAction compileActionA = compileAction("//objc:lib", "a.o");

    assertThat(compileActionA.getArguments()).contains("-fembed-bitcode");
  }

  @Test
  public void testCompilationActionsWithEmbeddedBitcodeForMultiplePlatformsWithoutMatch()
      throws Exception {
    useConfiguration(
        "--apple_platform_type=ios",
        "--ios_multi_cpus=arm64",
        "--apple_bitcode=tvos=embedded",
        "--apple_bitcode=watchos=embedded");
    createLibraryTargetWriter("//objc:lib")
        .setAndCreateFiles("srcs", "a.m", "b.m", "private.h")
        .setAndCreateFiles("hdrs", "c.h")
        .write();

    CommandAction compileActionA = compileAction("//objc:lib", "a.o");

    assertThat(compileActionA.getArguments()).doesNotContain("-fembed-bitcode");
    assertThat(compileActionA.getArguments()).doesNotContain("-fembed-bitcode-marker");
  }

  @Test
  public void testLaterBitcodeOptionsOverrideEarlierOptionsForSamePlatform() throws Exception {
    useConfiguration(
        "--apple_platform_type=ios",
        "--ios_multi_cpus=arm64",
        "--apple_bitcode=ios=embedded",
        "--apple_bitcode=ios=embedded_markers");
    createLibraryTargetWriter("//objc:lib")
        .setAndCreateFiles("srcs", "a.m", "b.m", "private.h")
        .setAndCreateFiles("hdrs", "c.h")
        .write();

    CommandAction compileActionA = compileAction("//objc:lib", "a.o");

    assertThat(compileActionA.getArguments()).doesNotContain("-fembed-bitcode");
    assertThat(compileActionA.getArguments()).contains("-fembed-bitcode-marker");
  }

  @Test
  public void testLaterBitcodeOptionWithoutPlatformOverridesEarlierOptionWithPlatform()
      throws Exception {
    useConfiguration(
        "--apple_platform_type=ios",
        "--ios_multi_cpus=arm64",
        "--apple_bitcode=ios=embedded",
        "--apple_bitcode=embedded_markers");
    createLibraryTargetWriter("//objc:lib")
        .setAndCreateFiles("srcs", "a.m", "b.m", "private.h")
        .setAndCreateFiles("hdrs", "c.h")
        .write();

    CommandAction compileActionA = compileAction("//objc:lib", "a.o");

    assertThat(compileActionA.getArguments()).doesNotContain("-fembed-bitcode");
    assertThat(compileActionA.getArguments()).contains("-fembed-bitcode-marker");
  }

  @Test
  public void testLaterPlatformBitcodeOptionWithPlatformOverridesEarlierOptionWithoutPlatform()
      throws Exception {
    useConfiguration(
        "--apple_platform_type=ios",
        "--ios_multi_cpus=arm64",
        "--apple_bitcode=embedded",
        "--apple_bitcode=ios=embedded_markers");
    createLibraryTargetWriter("//objc:lib")
        .setAndCreateFiles("srcs", "a.m", "b.m", "private.h")
        .setAndCreateFiles("hdrs", "c.h")
        .write();

    CommandAction compileActionA = compileAction("//objc:lib", "a.o");

    assertThat(compileActionA.getArguments()).doesNotContain("-fembed-bitcode");
    assertThat(compileActionA.getArguments()).contains("-fembed-bitcode-marker");
  }

  @Test
  public void testAppleBitcode_invalidPlatformNameGivesError() throws Exception {
    checkBitcodeModeError(
        "--apple_platform_type=ios",
        "--ios_multi_cpus=arm64",
        "--apple_bitcode=ios=embedded",
        "--apple_bitcode=nachos=embedded");
  }

  @Test
  public void testAppleBitcode_invalidBitcodeModeGivesError() throws Exception {
    checkBitcodeModeError(
        "--apple_platform_type=ios", "--ios_multi_cpus=arm64", "--apple_bitcode=indebted");
  }

  @Test
  public void testAppleBitcode_invalidBitcodeModeWithPlatformGivesError() throws Exception {
    checkBitcodeModeError(
        "--apple_platform_type=ios", "--ios_multi_cpus=arm64", "--apple_bitcode=ios=indebted");
  }

  @Test
  public void testAppleBitcode_emptyBitcodeModeGivesError() throws Exception {
    checkBitcodeModeError(
        "--apple_platform_type=ios", "--ios_multi_cpus=arm64", "--apple_bitcode=ios=");
  }

  @Test
  public void testAppleBitcode_emptyValueGivesError() throws Exception {
    checkBitcodeModeError(
        "--apple_platform_type=ios", "--ios_multi_cpus=arm64", "--apple_bitcode=");
  }

  private void checkBitcodeModeError(String... args) throws Exception {
    OptionsParsingException thrown =
        assertThrows(OptionsParsingException.class, () -> useConfiguration(args));
    assertThat(thrown).hasMessageThat().contains(INVALID_APPLE_BITCODE_OPTION_FORMAT);
  }

  @Test
  public void testCompilationActionsWithCoptFmodules() throws Exception {
    createLibraryTargetWriter("//objc:lib")
        .setAndCreateFiles("srcs", "a.m", "b.m", "private.h")
        .setAndCreateFiles("hdrs", "c.h")
        .setList("copts", "-fmodules")
        .write();
    CommandAction compileActionA = compileAction("//objc:lib", "a.o");
    assertThat(removeConfigFragment(compileActionA.getArguments()))
        .containsAtLeast(
            "-fmodules", "-fmodules-cache-path=" + removeConfigFragment(getModulesCachePath()));
  }

  @Test
  public void testArchiveAction_simulator() throws Exception {
    useConfiguration("--apple_platform_type=ios", "--cpu=ios_i386", "--ios_cpu=i386");
    createLibraryTargetWriter("//objc:lib")
        .setAndCreateFiles("srcs", "a.m", "b.m", "private.h")
        .setAndCreateFiles("hdrs", "c.h")
        .write();

    CommandAction archiveAction = archiveAction("//objc:lib");
    assertThat(archiveAction.getArguments())
        .isEqualTo(
            ImmutableList.of(
                "tools/osx/crosstool/iossim/libtool",
                "-static",
                "-filelist",
                getBinArtifact("lib-archive.objlist", getConfiguredTarget("//objc:lib"))
                    .getExecPathString(),
                "-arch_only",
                "i386",
                "-syslibroot",
                AppleToolchain.sdkDir(),
                "-o",
                Iterables.getOnlyElement(archiveAction.getOutputs()).getExecPathString()));
    assertThat(baseArtifactNames(archiveAction.getInputs()))
        .containsAtLeast("a.o", "b.o", "lib-archive.objlist", "ar", "libempty.a", "libtool");
    assertThat(baseArtifactNames(archiveAction.getOutputs())).containsExactly("liblib.a");
    assertRequiresDarwin(archiveAction);
  }

  @Test
  public void testArchiveAction_device() throws Exception {
    useConfiguration("--apple_platform_type=ios", "--cpu=ios_armv7", "--ios_cpu=armv7");
    createLibraryTargetWriter("//objc:lib")
        .setAndCreateFiles("srcs", "a.m", "b.m", "private.h")
        .setAndCreateFiles("hdrs", "c.h")
        .write();
    CommandAction archiveAction = archiveAction("//objc:lib");

    assertThat(archiveAction.getArguments())
        .isEqualTo(
            ImmutableList.of(
                "tools/osx/crosstool/ios/libtool",
                "-static",
                "-filelist",
                getBinArtifact("lib-archive.objlist", getConfiguredTarget("//objc:lib"))
                    .getExecPathString(),
                "-arch_only",
                "armv7",
                "-syslibroot",
                AppleToolchain.sdkDir(),
                "-o",
                Iterables.getOnlyElement(archiveAction.getOutputs()).getExecPathString()));
    assertThat(baseArtifactNames(archiveAction.getInputs()))
        .containsAtLeast("a.o", "b.o", "lib-archive.objlist");
    assertThat(baseArtifactNames(archiveAction.getOutputs())).containsExactly("liblib.a");
    assertRequiresDarwin(archiveAction);
  }

  @Test
  public void checkDoesNotStoreObjcLibsAsCC() throws Exception {
    createLibraryTargetWriter("//objc:lib_dep")
        .setAndCreateFiles("srcs", "a.m", "b.m", "private.h")
        .setAndCreateFiles("hdrs", "a.h", "b.h")
        .write();
    createLibraryTargetWriter("//objc2:lib")
        .setAndCreateFiles("srcs", "a.m", "b.m", "private.h")
        .setAndCreateFiles("hdrs", "c.h", "d.h")
        .setList("deps", "//objc:lib_dep")
        .write();
    ObjcProvider objcProvider = providerForTarget("//objc2:lib");
    assertThat(objcProvider.get(CC_LIBRARY).toList()).isEmpty();
  }

  @Test
  public void testIncludesDirsGetPassedToCompileAction() throws Exception {
    createLibraryTargetWriter("//lib:lib")
        .setAndCreateFiles("srcs", "a.m", "b.m", "private.h")
        .setList("includes", "../third_party/foo", "opensource/bar")
        .write();
    CommandAction compileAction = compileAction("//lib:lib", "a.o");

    for (String path :
        rootedIncludePaths(
            getAppleCrosstoolConfiguration(), "third_party/foo", "lib/opensource/bar")) {
      assertThat(Joiner.on("").join(removeConfigFragment(compileAction.getArguments())))
          .contains("-I" + path);
    }
  }

  @Test
  public void testPropagatesDefinesToDependersTransitively() throws Exception {
    useConfiguration("--apple_platform_type=ios", "--cpu=ios_x86_64", "--ios_cpu=x86_64");
    createLibraryTargetWriter("//lib1:lib1")
        .setAndCreateFiles("srcs", "a.m")
        .setAndCreateFiles("non_arc_srcs", "b.m")
        .setList("defines", "A=foo", "B", "MONKEYS=$(TARGET_CPU)")
        .write();
    createLibraryTargetWriter("//lib2:lib2")
        .setAndCreateFiles("srcs", "a.m")
        .setAndCreateFiles("non_arc_srcs", "b.m")
        .setList("deps", "//lib1:lib1")
        .setList("defines", "C=bar", "D")
        .write();
    createBinaryTargetWriter("//bin:bin")
        .setList("deps", "//lib2:lib2")
        .write();

    assertThat(compileAction("//lib1:lib1", "a.o").getArguments())
        .containsAtLeast("-DA=foo", "-DB", "-DMONKEYS=ios_x86_64")
        .inOrder();
    assertThat(compileAction("//lib1:lib1", "b.o").getArguments())
        .containsAtLeast("-DA=foo", "-DB", "-DMONKEYS=ios_x86_64")
        .inOrder();
    assertThat(compileAction("//lib2:lib2", "a.o").getArguments())
        .containsAtLeast("-DA=foo", "-DB", "-DMONKEYS=ios_x86_64", "-DC=bar", "-DD")
        .inOrder();
    assertThat(compileAction("//lib2:lib2", "b.o").getArguments())
        .containsAtLeast("-DA=foo", "-DB", "-DMONKEYS=ios_x86_64", "-DC=bar", "-DD")
        .inOrder();
    // TODO: Add tests for //bin:bin once experimental_objc_binary is implemented
  }

  @Test
  public void testDuplicateDefines() throws Exception {
    createLibraryTargetWriter("//lib:lib")
        .setAndCreateFiles("srcs", "a.m")
        .setList("defines", "foo=bar", "foo=bar")
        .write();
    int timesDefinesAppear = 0;
    for (String arg : compileAction("//lib:lib", "a.o").getArguments()) {
      if (arg.equals("-Dfoo=bar")) {
        timesDefinesAppear++;
      }
    }
    assertWithMessage("Duplicate define \"foo=bar\" should occur only once in command line")
        .that(timesDefinesAppear)
        .isEqualTo(1);
  }

  @Test
  public void checkDefinesFromCcLibraryDep() throws Exception {
    checkDefinesFromCcLibraryDep(RULE_TYPE);
  }

  @Test
  public void testCppSourceCompilesWithCppFlags() throws Exception {
    createLibraryTargetWriter("//objc:x")
        .setAndCreateFiles("srcs", "a.mm", "b.cc", "c.mm", "d.cxx", "e.c", "f.m", "g.C")
        .write();
    assertThat(compileAction("//objc:x", "a.o").getArguments()).contains("-std=gnu++11");
    assertThat(compileAction("//objc:x", "b.o").getArguments()).contains("-std=gnu++11");
    assertThat(compileAction("//objc:x", "c.o").getArguments()).contains("-std=gnu++11");
    assertThat(compileAction("//objc:x", "d.o").getArguments()).contains("-std=gnu++11");
    assertThat(compileAction("//objc:x", "e.o").getArguments()).doesNotContain("-std=gnu++11");
    assertThat(compileAction("//objc:x", "f.o").getArguments()).doesNotContain("-std=gnu++11");
    assertThat(compileAction("//objc:x", "g.o").getArguments()).contains("-std=gnu++11");
  }

  @Test
  public void testDoesNotUseCxxUnfilteredFlags() throws Exception {
    createLibraryTargetWriter("//lib:lib")
        .setList("srcs", "a.m")
        .write();
    // -pthread is an unfiltered_cxx_flag in the osx crosstool.
    assertThat(compileAction("//lib:lib", "a.o").getArguments()).doesNotContain("-pthread");
  }

  @Test
  public void testDoesNotUseDotdPruning() throws Exception {
    useConfiguration("--objc_use_dotd_pruning=false");
    createLibraryTargetWriter("//lib:lib")
        .setList("srcs", "a.m")
        .write();
    CppCompileAction compileAction = (CppCompileAction) compileAction("//lib:lib", "a.o");
    assertThat(compileAction.getDotdFile()).isNull();
  }

  @Test
  public void testProvidesObjcLibraryAndHeaders() throws Exception {
    ConfiguredTarget target =
        createLibraryTargetWriter("//objc:lib")
            .setAndCreateFiles("srcs", "a.m", "b.m", "private.h")
            .setAndCreateFiles("hdrs", "a.h", "b.h")
            .write();
    ConfiguredTarget depender =
        createLibraryTargetWriter("//objc2:lib")
            .setAndCreateFiles("srcs", "a.m", "b.m", "private.h")
            .setAndCreateFiles("hdrs", "c.h", "d.h")
            .setList("deps", "//objc:lib")
            .write();
    assertThat(getArifactPaths(target, LIBRARY)).containsExactly("objc/liblib.a");
    assertThat(getArifactPaths(depender, LIBRARY)).containsExactly(
        "objc/liblib.a", "objc2/liblib.a");
    assertThat(getArifactPathsOfHeaders(target))
        .containsExactly("objc/a.h", "objc/b.h", "objc/private.h");
    assertThat(getArifactPathsOfHeaders(depender))
        .containsExactly(
            "objc/a.h", "objc/b.h", "objc/private.h", "objc2/c.h", "objc2/d.h", "objc2/private.h");
  }

  private static Iterable<String> getArifactPaths(
      ConfiguredTarget target, ObjcProvider.Key<Artifact> artifactKey) {
    return Artifact.toRootRelativePaths(
        target.get(ObjcProvider.STARLARK_CONSTRUCTOR).get(artifactKey));
  }

  private static Iterable<String> getArifactPathsOfHeaders(ConfiguredTarget target) {
    return Artifact.toRootRelativePaths(
        target.get(CcInfo.PROVIDER).getCcCompilationContext().getDeclaredIncludeSrcs());
  }

  @Test
  public void testWeakSdkFrameworks_objcProvider() throws Exception {
    createLibraryTargetWriter("//base_lib:lib")
        .setAndCreateFiles("srcs", "a.m", "b.m", "private.h")
        .setList("weak_sdk_frameworks", "foo")
        .write();
    createLibraryTargetWriter("//depender_lib:lib")
        .setAndCreateFiles("srcs", "a.m", "b.m", "private.h")
        .setList("weak_sdk_frameworks", "bar")
        .setList("deps", "//base_lib:lib")
        .write();

    ObjcProvider baseProvider = providerForTarget("//base_lib:lib");
    ObjcProvider dependerProvider = providerForTarget("//depender_lib:lib");

    assertThat(baseProvider.get(WEAK_SDK_FRAMEWORK).toList())
        .containsExactly(new SdkFramework("foo"));
    assertThat(dependerProvider.get(WEAK_SDK_FRAMEWORK).toList())
        .containsExactly(new SdkFramework("foo"), new SdkFramework("bar"));
  }

  @Test
  public void testErrorIfDepDoesNotExist() throws Exception {
    checkErrorIfNotExist("deps", "[':nonexistent']");
  }

  @Test
  public void testArIsNotImplicitOutput() throws Exception {
    createLibraryTargetWriter("//lib:lib")
        .setAndCreateFiles("srcs", "a.m", "b.m", "private.h")
        .write();
    reporter.removeHandler(failFastHandler);
    assertThrows(NoSuchTargetException.class, () -> getTarget("//lib:liblib.a"));
  }

  @Test
  public void testErrorForAbsoluteIncludesPath() throws Exception {
    scratch.file("x/a.m");
    checkError(
        "x",
        "x",
        String.format(ABSOLUTE_INCLUDES_PATH_FORMAT, "/absolute/path"),
        "objc_library(",
        "    name = 'x',",
        "    srcs = ['a.m'],",
        "    includes = ['/absolute/path'],",
        ")");
  }

  @Test
  public void testDylibsProvided() throws Exception {
    createLibraryTargetWriter("//lib:lib")
        .setAndCreateFiles("srcs", "a.m", "b.m", "private.h")
        .setList("sdk_dylibs", "libdy1", "libdy2")
        .write();
    ObjcProvider provider = providerForTarget("//lib:lib");
    assertThat(provider.get(SDK_DYLIB).toList()).containsExactly("libdy1", "libdy2").inOrder();
  }

  @Test
  public void testPopulatesCompilationArtifacts() throws Exception {
    checkPopulatesCompilationArtifacts(RULE_TYPE);
  }

  @Test
  public void testObjcListFileInArchiveGeneration() throws Exception {
    scratch.file("lib/a.m");
    scratch.file("lib/b.m");
    scratch.file("lib/BUILD", "objc_library(name = 'lib1', srcs = ['a.m', 'b.m'])");
    ConfiguredTarget target = getConfiguredTarget("//lib:lib1");
    Artifact lib = getBinArtifact("liblib1.a", target);
    Action action = getGeneratingAction(lib);
    assertThat(paramFileArgsForAction(action))
        .containsExactlyElementsIn(
            Artifact.toExecPaths(inputsEndingWith(archiveAction("//lib:lib1"), ".o")));
  }

  @Test
  public void testErrorsWrongFileTypeForSrcsWhenCompiling() throws Exception {
    checkErrorsWrongFileTypeForSrcsWhenCompiling(RULE_TYPE);
  }

  @Test
  public void testCompilationActionsForDebug() throws Exception {
    checkClangCoptsForCompilationMode(RULE_TYPE, CompilationMode.DBG, CodeCoverageMode.NONE);
  }

  @Test
  public void testClangCoptsForDebugModeWithoutGlib() throws Exception {
    checkClangCoptsForDebugModeWithoutGlib(RULE_TYPE);
  }

  @Test
  public void testClangCoptsForDebugModeWithoutHardcoding() throws Exception {
    useConfiguration(
        "--apple_platform_type=ios",
        "--compilation_mode=dbg",
        "--incompatible_avoid_hardcoded_objc_compilation_flags");
    scratch.file("x/a.m");
    RULE_TYPE.scratchTarget(scratch, "srcs", "['a.m']");

    assertThat(compileAction("//x:x", "a.o").getArguments()).doesNotContain("-DDEBUG=1");
  }

  @Test
  public void testClangCoptsForDebugModeWithoutGlibOrHardcoding() throws Exception {
    useConfiguration(
        "--apple_platform_type=ios",
        "--compilation_mode=dbg",
        "--objc_debug_with_GLIBCXX=false",
        "--incompatible_avoid_hardcoded_objc_compilation_flags");
    scratch.file("x/a.m");
    RULE_TYPE.scratchTarget(scratch, "srcs", "['a.m']");

    assertThat(compileAction("//x:x", "a.o").getArguments())
        .containsNoneOf("-D_GLIBCXX_DEBUG", "-DDEBUG=1");
  }

  @Test
  public void testCompilationActionsForOptimized() throws Exception {
    checkClangCoptsForCompilationMode(RULE_TYPE, CompilationMode.OPT, CodeCoverageMode.NONE);
  }

  @Test
  public void testClangCoptsForOptimizedWithoutHardcoding() throws Exception {
    useConfiguration(
        "--apple_platform_type=ios",
        "--compilation_mode=opt",
        "--incompatible_avoid_hardcoded_objc_compilation_flags");
    scratch.file("x/a.m");
    RULE_TYPE.scratchTarget(scratch, "srcs", "['a.m']");

    assertThat(compileAction("//x:x", "a.o").getArguments()).doesNotContain("-DNDEBUG=1");
  }

  @Test
  public void testUsesDefinesFromTransitiveCcDeps() throws Exception {
    scratch.file(
        "package/BUILD",
        "cc_library(",
        "    name = 'cc_lib',",
        "    srcs = ['a.cc'],",
        "    defines = ['FOO'],",
        ")",
        "",
        "objc_library(",
        "    name = 'objc_lib',",
        "    srcs = ['b.m'],",
        "    deps = [':cc_lib'],",
        ")");

    CommandAction compileAction = compileAction("//package:objc_lib", "b.o");
    assertThat(compileAction.getArguments()).contains("-DFOO");
  }

  @Test
  public void testAllowVariousNonBlacklistedTypesInHeaders() throws Exception {
    checkAllowVariousNonBlacklistedTypesInHeaders(RULE_TYPE);
  }

  @Test
  public void testAppleSdkVersionEnv() throws Exception {
    useConfiguration("--apple_platform_type=ios");
    createLibraryTargetWriter("//objc:lib")
        .setAndCreateFiles("srcs", "a.m", "b.m", "private.h")
        .setAndCreateFiles("hdrs", "c.h")
        .write();
    CommandAction action = compileAction("//objc:lib", "a.o");

    assertAppleSdkVersionEnv(action);
  }

  @Test
  public void testNonDefaultAppleSdkVersionEnv() throws Exception {
    useConfiguration("--apple_platform_type=ios", "--ios_sdk_version=8.1");

    createLibraryTargetWriter("//objc:lib")
        .setAndCreateFiles("srcs", "a.m", "b.m", "private.h")
        .setAndCreateFiles("hdrs", "c.h")
        .write();
    CommandAction action = compileAction("//objc:lib", "a.o");

    assertAppleSdkVersionEnv(action, "8.1");
  }

  @Test
  public void testXcodeVersionEnv() throws Exception {
    useConfiguration("--xcode_version=5.8");

    createLibraryTargetWriter("//objc:lib")
        .setAndCreateFiles("srcs", "a.m", "b.m", "private.h")
        .setAndCreateFiles("hdrs", "c.h")
        .write();
    CommandAction action = compileAction("//objc:lib", "a.o");

    assertXcodeVersionEnv(action, "5.8");
  }

  @Test
  public void testIosSdkVersionCannotBeDefinedButEmpty() throws Exception {
    OptionsParsingException e =
        assertThrows(OptionsParsingException.class, () -> useConfiguration("--ios_sdk_version="));
    assertThat(e).hasMessageThat().contains("--ios_sdk_version");
  }

  private void checkErrorIfNotExist(String attribute, String value) throws Exception {
    scratch.file("x/a.m");
    checkError(
        "x",
        "x",
        "in "
            + attribute
            + " attribute of objc_library rule //x:x: rule '//x:nonexistent' does not exist",
        "objc_library(",
        "    name = 'x',",
        "    srcs = ['a.m'],",
        attribute + " = " + value,
        ")");
  }

  @Test
  public void testCompilesWithHdrs() throws Exception {
    checkCompilesWithHdrs(ObjcLibraryTest.RULE_TYPE);
  }

  @Test
  public void testCompilesAssemblyWithPreprocessing() throws Exception {
    createLibraryTargetWriter("//objc:lib")
        .setAndCreateFiles("srcs", "a.m", "b.S")
        .setAndCreateFiles("hdrs", "c.h")
        .write();

    CommandAction compileAction = compileAction("//objc:lib", "b.o");

    // Clang automatically preprocesses .S files, so the assembler-with-cpp flag is unnecessary.
    // Regression test for b/22636858.
    assertThat(compileAction.getArguments()).doesNotContain("-x");
    assertThat(compileAction.getArguments()).doesNotContain("assembler-with-cpp");
    assertThat(baseArtifactNames(compileAction.getOutputs())).containsExactly("b.o", "b.d");
    assertThat(baseArtifactNames(compileAction.getPossibleInputsForTesting()))
        .containsAtLeast("c.h", "b.S");
  }

  @Test
  public void testReceivesTransitivelyPropagatedDefines() throws Exception {
    checkReceivesTransitivelyPropagatedDefines(RULE_TYPE);
  }

  @Test
  public void testSdkIncludesUsedInCompileAction() throws Exception {
    checkSdkIncludesUsedInCompileAction(RULE_TYPE);
  }

  @Test
  public void testCompilationActionsWithPch() throws Exception {
    useConfiguration("--apple_platform_type=ios");
    scratch.file("objc/foo.pch");
    createLibraryTargetWriter("//objc:lib")
        .setAndCreateFiles("srcs", "a.m", "b.m", "private.h")
        .setAndCreateFiles("hdrs", "c.h")
        .set("pch", "'some.pch'")
        .write();

    CommandAction compileActionA = compileAction("//objc:lib", "a.o");

    assertThat(removeConfigFragment(compileActionA.getArguments()))
        .containsAtLeastElementsIn(
            new ImmutableList.Builder<String>()
                .addAll(AppleToolchain.DEFAULT_WARNINGS.values())
                .add("-fexceptions")
                .add("-fasm-blocks")
                .add("-fobjc-abi-version=2")
                .add("-fobjc-legacy-dispatch")
                .addAll(CompilationSupport.DEFAULT_COMPILER_FLAGS)
                .add("-mios-simulator-version-min=" + DEFAULT_IOS_SDK_VERSION)
                .add("-arch x86_64")
                .add("-isysroot", AppleToolchain.sdkDir())
                .addAll(FASTBUILD_COPTS)
                .add("-iquote", ".")
                .add(
                    "-iquote",
                    removeConfigFragment(
                        getAppleCrosstoolConfiguration()
                            .getGenfilesFragment(RepositoryName.MAIN)
                            .getSafePathString()))
                .add("-include", "objc/some.pch")
                .add("-fobjc-arc")
                .add("-c", "objc/a.m")
                .addAll(outputArgs(compileActionA.getOutputs()))
                .build());

    assertThat(compileActionA.getPossibleInputsForTesting().toList())
        .contains(getFileConfiguredTarget("//objc:some.pch").getArtifact());
  }

  // Converts output artifacts into expected command-line arguments.
  protected List<String> outputArgs(Set<Artifact> outputs) {
    ImmutableList.Builder<String> result = new ImmutableList.Builder<>();
    for (String outputConfig : Artifact.toExecPaths(outputs)) {
      String output = removeConfigFragment(outputConfig);
      if (output.endsWith(".o")) {
        result.add("-o", output);
      } else if (output.endsWith(".d")) {
        result.add("-MD", "-MF", output);
      } else {
        throw new IllegalArgumentException(
            "output " + output + " has unknown ending (not in (.d, .o)");
      }
    }
    return result.build();
  }

  @Test
  public void checkStoresCcLibsAsCc() throws Exception {
    ScratchAttributeWriter.fromLabelString(this, "cc_library", "//cc:lib")
        .setAndCreateFiles("srcs", "a.cc")
        .write();
    scratch.file(
        "third_party/cc_lib/BUILD",
        "licenses(['unencumbered'])",
        "cc_library(",
        "    name = 'cc_lib_impl',",
        "    srcs = [",
        "        'a.c',",
        "        'a.h',",
        "    ],",
        ")",
        "",
        "cc_library(",
        "    name = 'cc_lib',",
        "    hdrs = ['a.h'],",
        "    deps = [':cc_lib_impl'],",
        ")");
    createLibraryTargetWriter("//objc2:lib")
        .setAndCreateFiles("srcs", "a.m", "b.m")
        .setAndCreateFiles("hdrs", "c.h", "d.h")
        .setList("deps", "//cc:lib", "//third_party/cc_lib:cc_lib_impl")
        .write();
    ObjcProvider objcProvider = providerForTarget("//objc2:lib");

    Iterable<String> linkerInputArtifacts =
        Iterables.transform(
            objcProvider.get(CC_LIBRARY).toList(),
            (library) -> removeConfigFragment(library.getStaticLibrary().getExecPathString()));

    assertThat(linkerInputArtifacts)
        .containsAtLeast(
            removeConfigFragment(
                getBinArtifact("liblib.a", getConfiguredTarget("//cc:lib")).getExecPathString()),
            removeConfigFragment(
                getBinArtifact(
                        "libcc_lib_impl.a", getConfiguredTarget("//third_party/cc_lib:cc_lib_impl"))
                    .getExecPathString()));
  }

  @Test
  public void testCollectsSdkFrameworksTransitively() throws Exception {
    createLibraryTargetWriter("//base_lib:lib")
        .setAndCreateFiles("srcs", "a.m", "b.m", "private.h")
        .setList("sdk_frameworks", "foo")
        .write();
    createLibraryTargetWriter("//depender_lib:lib")
        .setAndCreateFiles("srcs", "a.m", "b.m", "private.h")
        .setList("sdk_frameworks", "bar")
        .setList("deps", "//base_lib:lib")
        .write();

    ObjcProvider baseProvider = providerForTarget("//base_lib:lib");
    ObjcProvider dependerProvider = providerForTarget("//depender_lib:lib");

    Set<SdkFramework> baseFrameworks = ImmutableSet.of(new SdkFramework("foo"));
    Set<SdkFramework> dependerFrameworks =
        ImmutableSet.of(new SdkFramework("foo"), new SdkFramework("bar"));
    assertThat(baseProvider.get(SDK_FRAMEWORK).toList()).containsExactlyElementsIn(baseFrameworks);
    assertThat(dependerProvider.get(SDK_FRAMEWORK).toList())
        .containsExactlyElementsIn(dependerFrameworks);

    // Make sure that the archive action does not actually include the frameworks. This is needed
    // for creating binaries but is ignored for libraries.
    CommandAction archiveAction = archiveAction("//depender_lib:lib");
    assertThat(archiveAction.getArguments())
        .containsAtLeastElementsIn(
            new ImmutableList.Builder<String>()
                .add("-static")
                .add("-filelist")
                .add(
                    getBinArtifact("lib-archive.objlist", getConfiguredTarget("//depender_lib:lib"))
                        .getExecPathString())
                .add("-arch_only", "x86_64")
                .add("-syslibroot")
                .add(AppleToolchain.sdkDir())
                .add("-o")
                .addAll(Artifact.toExecPaths(archiveAction.getOutputs()))
                .build());
  }

  @Test
  public void testMultipleRulesCompilingOneSourceGenerateUniqueObjFiles() throws Exception {
    scratch.file("lib/a.m");
    scratch.file("lib/BUILD",
        "objc_library(name = 'lib1', srcs = ['a.m'], copts = ['-Ilib1flag'])",
        "objc_library(name = 'lib2', srcs = ['a.m'], copts = ['-Ilib2flag'])");
    Artifact obj1 = Iterables.getOnlyElement(
        inputsEndingWith(archiveAction("//lib:lib1"), ".o"));
    Artifact obj2 = Iterables.getOnlyElement(
        inputsEndingWith(archiveAction("//lib:lib2"), ".o"));

    // The exec paths of each obj file should be based on the objc_library target.
    assertThat(obj1.getExecPathString()).contains("lib1");
    assertThat(obj1.getExecPathString()).doesNotContain("lib2");
    assertThat(obj2.getExecPathString()).doesNotContain("lib1");
    assertThat(obj2.getExecPathString()).contains("lib2");

    CommandAction compile1 = (CommandAction) getGeneratingAction(obj1);
    CommandAction compile2 = (CommandAction) getGeneratingAction(obj2);
    assertThat(compile1.getArguments()).contains("-Ilib1flag");
    assertThat(compile2.getArguments()).contains("-Ilib2flag");
  }

  @Test
  public void testIncludesDirsOfTransitiveDepsGetPassedToCompileAction() throws Exception {
    createLibraryTargetWriter("//lib1:lib1")
        .setAndCreateFiles("srcs", "a.m", "b.m", "private.h")
        .setList("includes", "third_party/foo", "opensource/bar")
        .write();

    createLibraryTargetWriter("//lib2:lib2")
        .setAndCreateFiles("srcs", "a.m", "b.m", "private.h")
        .setList("includes", "more_includes")
        .setList("deps", "//lib1:lib1")
        .write();
    CommandAction compileAction = compileAction("//lib2:lib2", "a.o");
    // We remove spaces, since the crosstool rules do not use spaces in include paths
    String compileActionArgs =
        Joiner.on("").join(removeConfigFragment(compileAction.getArguments())).replace(" ", "");
    List<String> expectedIncludePaths = rootedIncludePaths(
        getAppleCrosstoolConfiguration(),
        "lib2/more_includes",
        "lib1/third_party/foo",
        "lib1/opensource/bar");
    for (String expectedIncludePath : expectedIncludePaths) {
      assertThat(compileActionArgs).contains("-I" + expectedIncludePath);
    }
  }

  @Test
  public void testIncludesDirsOfTransitiveCcDepsGetPassedToCompileAction() throws Exception {
    scratch.file("package/BUILD",
        "cc_library(",
        "    name = 'cc_lib',",
        "    srcs = ['a.cc'],",
        "    includes = ['foo/bar'],",
        ")",
        "",
        "objc_library(",
        "    name = 'objc_lib',",
        "    srcs = ['b.m'],",
        "    deps = [':cc_lib'],",
        ")");

    CommandAction compileAction = compileAction("//package:objc_lib", "b.o");
    assertContainsSublist(
        removeConfigFragment(removeConfigFragment(compileAction.getArguments())),
        ImmutableList.copyOf(
            Interspersing.beforeEach(
                "-isystem",
                rootedIncludePaths(getAppleCrosstoolConfiguration(), "package/foo/bar"))));
  }

  @Test
  public void testIncludesDirsOfTransitiveCcIncDepsGetPassedToCompileAction() throws Exception {
    scratch.file(
        "third_party/cc_lib/BUILD",
        "licenses(['unencumbered'])",
        "cc_library(",
        "    name = 'cc_lib_impl',",
        "    srcs = [",
        "        'v1/a.c',",
        "        'v1/a.h',",
        "    ],",
        ")",
        "",
        "cc_library(",
        "    name = 'cc_lib',",
        "    hdrs = ['v1/a.h'],",
        "    strip_include_prefix = 'v1',",
        "    deps = [':cc_lib_impl'],",
        ")");

    scratch.file(
        "package/BUILD",
        "objc_library(",
        "    name = 'objc_lib',",
        "    srcs = ['b.m'],",
        "    deps = ['//third_party/cc_lib:cc_lib'],",
        ")");

    CommandAction compileAction = compileAction("//package:objc_lib", "b.o");
    // We remove spaces, since the crosstool rules do not use spaces for include paths.
    String compileActionArgs = Joiner.on("")
        .join(compileAction.getArguments())
        .replace(" ", "");
    assertThat(compileActionArgs)
        .matches(".*-iquote.*/third_party/cc_lib/_virtual_includes/cc_lib.*");
  }

  @Test
  public void testIncludesIquoteFlagForGenFilesRoot() throws Exception {
    createLibraryTargetWriter("//lib:lib")
        .setAndCreateFiles("srcs", "a.m", "b.m", "private.h")
        .write();
    CommandAction compileAction = compileAction("//lib:lib", "a.o");
    BuildConfiguration config = getAppleCrosstoolConfiguration();
    assertContainsSublist(
        removeConfigFragment(compileAction.getArguments()),
        ImmutableList.of(
            "-iquote",
            removeConfigFragment(
                config.getGenfilesFragment(RepositoryName.MAIN).getSafePathString())));
  }

  @Test
  public void testCompilesAssemblyAsm() throws Exception {
    createLibraryTargetWriter("//objc:lib")
        .setAndCreateFiles("srcs", "a.m", "b.asm")
        .setAndCreateFiles("hdrs", "c.h")
        .write();

    CommandAction compileAction = compileAction("//objc:lib", "b.o");

    assertThat(compileAction.getArguments()).doesNotContain("-x");
    assertThat(compileAction.getArguments()).doesNotContain("assembler-with-cpp");
    assertThat(baseArtifactNames(compileAction.getOutputs())).contains("b.o");
    assertThat(baseArtifactNames(compileAction.getPossibleInputsForTesting()))
        .containsAtLeast("c.h", "b.asm");
  }

  @Test
  public void testCompilesAssemblyS() throws Exception {
    createLibraryTargetWriter("//objc:lib")
        .setAndCreateFiles("srcs", "a.m", "b.s")
        .setAndCreateFiles("hdrs", "c.h")
        .write();

    CommandAction compileAction = compileAction("//objc:lib", "b.o");

    assertThat(compileAction.getArguments()).doesNotContain("-x");
    assertThat(compileAction.getArguments()).doesNotContain("assembler-with-cpp");
    assertThat(baseArtifactNames(compileAction.getOutputs())).contains("b.o");
    assertThat(baseArtifactNames(compileAction.getPossibleInputsForTesting()))
        .containsAtLeast("c.h", "b.s");
  }

  @Test
  public void testProvidesHdrsAndIncludes() throws Exception {
    checkProvidesHdrsAndIncludes(RULE_TYPE, Optional.of("x/private.h"));
  }

  @Test
  public void testPruningActionsSetLocalityBasedOnXcode() throws Exception {
    scratch.file(
        "xcode/BUILD",
        "xcode_version(",
        "   name = 'version10_1_0',",
        "   version = '10.1.0',",
        "   aliases = ['10.1' ,'10.1.0'],",
        "   default_ios_sdk_version = '12.1',",
        "   default_tvos_sdk_version = '12.1',",
        "   default_macos_sdk_version = '10.14',",
        "   default_watchos_sdk_version = '5.1',",
        ")",
        "xcode_version(",
        "   name = 'version10_2_1',",
        "   version = '10.2.1',",
        "   aliases = ['10.2.1' ,'10.2'],",
        "   default_ios_sdk_version = '12.2',",
        "   default_tvos_sdk_version = '12.2',",
        "   default_macos_sdk_version = '10.14',",
        "   default_watchos_sdk_version = '5.2',",
        ")",
        "available_xcodes(",
        "   name= 'local',",
        "   versions = [':version10_1_0'],",
        "   default = ':version10_1_0',",
        ")",
        "available_xcodes(",
        "   name= 'remote',",
        "   versions = [':version10_2_1'],",
        "   default = ':version10_2_1',",
        ")",
        "xcode_config(",
        "   name = 'my_config',",
        "   local_versions = ':local',",
        "   remote_versions = ':remote',",
        ")");

    useConfigurationWithCustomXcode(
        "--xcode_version=10.2.1",
        "--xcode_version_config=//xcode:my_config",
        "--objc_use_dotd_pruning");
    createLibraryTargetWriter("//lib:lib").setList("srcs", "a.m").write();
    CppCompileAction action = (CppCompileAction) compileAction("//lib:lib", "a.o");
    assertHasRequirement(action, ExecutionRequirements.REQUIREMENTS_SET);
    assertHasRequirement(action, ExecutionRequirements.NO_LOCAL);
    assertNotHasRequirement(action, ExecutionRequirements.NO_REMOTE);
  }

  @Test
  public void testUsesDotdPruning() throws Exception {
    useConfiguration("--objc_use_dotd_pruning");
    createLibraryTargetWriter("//lib:lib").setList("srcs", "a.m").write();
    CppCompileAction compileAction = (CppCompileAction) compileAction("//lib:lib", "a.o");
    ActionExecutionException expected =
        assertThrows(
            ActionExecutionException.class,
            () ->
                compileAction.discoverInputsFromDotdFiles(
                    new ActionExecutionContextBuilder().build(), null, null, null, false));
    assertThat(expected).hasMessageThat().contains("error while parsing .d file");
  }

  @Test
  public void testAppleSdkDefaultPlatformEnv() throws Exception {
    useConfiguration("--apple_platform_type=ios");
    createLibraryTargetWriter("//objc:lib")
        .setAndCreateFiles("srcs", "a.m", "b.m", "private.h")
        .setAndCreateFiles("hdrs", "c.h")
        .write();
    CommandAction action = compileAction("//objc:lib", "a.o");

    assertAppleSdkPlatformEnv(action, "iPhoneSimulator");
  }

  @Test
  public void testAppleSdkDevicePlatformEnv() throws Exception {
    useConfiguration("--apple_platform_type=ios", "--cpu=ios_arm64");

    createLibraryTargetWriter("//objc:lib")
        .setAndCreateFiles("srcs", "a.m", "b.m", "private.h")
        .setAndCreateFiles("hdrs", "c.h")
        .write();
    CommandAction action = compileAction("//objc:lib", "a.o");

    assertAppleSdkPlatformEnv(action, "iPhoneOS");
  }

  @Test
  public void testApplePlatformEnvForCcLibraryDep() throws Exception {
    useConfiguration("--cpu=ios_i386");

    scratch.file(
        "package/BUILD",
        "cc_library(",
        "    name = 'cc_lib',",
        "    srcs = ['a.cc'],",
        ")",
        "",
        "apple_binary(",
        "    name = 'objc_bin',",
        "    platform_type = 'ios',",
        "    deps = [':main_lib'],",
        ")",
        "objc_library(",
        "    name = 'main_lib',",
        "    srcs = ['b.m'],",
        "    deps = [':cc_lib'],",
        ")");

    Action binLinkAction = linkAction("//package:objc_bin");
    Artifact artifact =
        ActionsTestUtil.getFirstArtifactEndingWith(binLinkAction.getInputs(), "libcc_lib.a");
    Action cppLibLinkAction = getGeneratingAction(artifact);
    Artifact cppLibArtifact =
        ActionsTestUtil.getFirstArtifactEndingWith(cppLibLinkAction.getInputs(), ".o");

    CppCompileAction action = (CppCompileAction) getGeneratingAction(cppLibArtifact);
    assertAppleSdkVersionEnv(action.getIncompleteEnvironmentForTesting());
  }

  @Test
  public void testExportsJ2ObjcProviders() throws Exception {
    ConfiguredTarget lib = createLibraryTargetWriter("//a:lib").write();
    assertThat(lib.get(J2ObjcEntryClassProvider.PROVIDER)).isNotNull();
    assertThat(lib.get(J2ObjcMappingFileProvider.PROVIDER)).isNotNull();
  }

  @Test
  public void testObjcImportDoesNotCrash() throws Exception {
    scratch.file(
        "x/BUILD",
        "objc_library(",
        "   name = 'objc',",
        "   srcs = ['source.m'],",
        "   deps = [':import'],",
        ")",
        "objc_import(",
        "   name = 'import',",
        "   archives = ['archive.a'],",
        ")");
    assertThat(getConfiguredTarget("//x:objc")).isNotNull();
  }

  @Test
  public void testCompilationActionsWithIQuotesInCopts() throws Exception {
    useConfiguration(
        "--cpu=ios_i386",
        "--ios_cpu=i386");
    createLibraryTargetWriter("//objc:lib")
        .setAndCreateFiles("srcs", "a.m", "b.m", "private.h")
        .setAndCreateFiles("hdrs", "c.h")
        .setList("copts", "-iquote foo/bar", "-iquote bam/baz")
        .write();

    CommandAction compileActionA = compileAction("//objc:lib", "a.o");
    String action = String.join(" ", compileActionA.getArguments());
    assertThat(action).contains("-iquote foo/bar");
    assertThat(action).contains("-iquote bam/baz");
  }
  @Test
  public void testCollectCodeCoverageWithGCOVFlags() throws Exception {
    useConfiguration("--collect_code_coverage");
    createLibraryTargetWriter("//objc:x")
        .setAndCreateFiles("srcs", "a.mm", "b.cc", "c.mm", "d.cxx", "e.c", "f.m", "g.C")
        .write();
    List<String> copts = ImmutableList.of("-fprofile-arcs", "-ftest-coverage");
    assertThat(compileAction("//objc:x", "a.o").getArguments()).containsAtLeastElementsIn(copts);
    assertThat(compileAction("//objc:x", "b.o").getArguments()).containsAtLeastElementsIn(copts);
    assertThat(compileAction("//objc:x", "c.o").getArguments()).containsAtLeastElementsIn(copts);
    assertThat(compileAction("//objc:x", "d.o").getArguments()).containsAtLeastElementsIn(copts);
    assertThat(compileAction("//objc:x", "e.o").getArguments()).containsAtLeastElementsIn(copts);
    assertThat(compileAction("//objc:x", "f.o").getArguments()).containsAtLeastElementsIn(copts);
    assertThat(compileAction("//objc:x", "g.o").getArguments()).containsAtLeastElementsIn(copts);
  }

  @Test
  public void testCollectCodeCoverageWithLLVMCOVFlags() throws Exception {
    useConfiguration("--collect_code_coverage", "--experimental_use_llvm_covmap");
    createLibraryTargetWriter("//objc:x")
        .setAndCreateFiles("srcs", "a.mm", "b.cc", "c.mm", "d.cxx", "e.c", "f.m", "g.C")
        .write();
    List<String> copts = ImmutableList.of("-fprofile-instr-generate", "-fcoverage-mapping");
    assertThat(compileAction("//objc:x", "a.o").getArguments()).containsAtLeastElementsIn(copts);
    assertThat(compileAction("//objc:x", "b.o").getArguments()).containsAtLeastElementsIn(copts);
    assertThat(compileAction("//objc:x", "c.o").getArguments()).containsAtLeastElementsIn(copts);
    assertThat(compileAction("//objc:x", "d.o").getArguments()).containsAtLeastElementsIn(copts);
    assertThat(compileAction("//objc:x", "e.o").getArguments()).containsAtLeastElementsIn(copts);
    assertThat(compileAction("//objc:x", "f.o").getArguments()).containsAtLeastElementsIn(copts);
    assertThat(compileAction("//objc:x", "g.o").getArguments()).containsAtLeastElementsIn(copts);
   }

  @Test
  public void testNoG0IfGeneratesDsym() throws Exception {
    useConfiguration("--apple_generate_dsym", "-c", "opt");
    createLibraryTargetWriter("//x:x").setList("srcs", "a.m").write();
    CommandAction compileAction = compileAction("//x:x", "a.o");
    assertThat(compileAction.getArguments()).doesNotContain("-g0");
  }

  @Test
  public void testFilesToCompileOutputGroup() throws Exception {
    checkFilesToCompileOutputGroup(RULE_TYPE);
  }

  @Test
  @Ignore("apple_grte_top isn't being applied because the cpu doesn't change")
  public void testSysrootArgSpecifiedWithGrteTopFlag() throws Exception {
    MockObjcSupport.setup(mockToolsConfig);
    useConfiguration(
        "--cpu=ios_x86_64",
        "--ios_cpu=x86_64",
        "--apple_grte_top=//x");
    scratch.file(
        "x/BUILD",
        "objc_library(",
        "   name = 'objc',",
        "   srcs = ['source.m'],",
        ")",
        "filegroup(",
        "    name = 'everything',",
        "    srcs = ['header.h'],",
        ")");
    CommandAction compileAction = compileAction("//x:objc", "source.o");
    assertThat(compileAction.getArguments()).contains("--sysroot=x");
  }

  @Test
  public void testDefaultEnabledFeatureIsUsed() throws Exception {
    // Although using --cpu=ios_x86_64, it transitions to darwin_x86_64, so the actual
    // cc_toolchain in use will be the darwin_x86_64 one.
    MockObjcSupport.setupCcToolchainConfig(
        mockToolsConfig, MockObjcSupport.darwinX86_64().withFeatures("default_feature"));
    useConfiguration(
        "--cpu=ios_x86_64",
        "--ios_cpu=x86_64");
    scratch.file(
        "x/BUILD",
        "objc_library(",
        "   name = 'objc',",
        "   srcs = ['source.m'],",
        ")");
    CommandAction compileAction = compileAction("//x:objc", "source.o");
    assertThat(compileAction.getArguments()).contains("-dummy");
  }

  @Test
  public void testHeaderPassedToCcLib() throws Exception {
    createLibraryTargetWriter("//objc:lib").setList("hdrs", "objc_hdr.h").write();
    ScratchAttributeWriter.fromLabelString(this, "cc_library", "//cc:lib")
        .setList("srcs", "a.cc")
        .setList("deps", "//objc:lib")
        .write();
    CommandAction compileAction = compileAction("//cc:lib", "a.o");
    assertThat(Artifact.toRootRelativePaths(compileAction.getPossibleInputsForTesting()))
        .contains("objc/objc_hdr.h");
  }

  @Test
  public void testTextualHeaderPassedToCcLib() throws Exception {
    ScratchAttributeWriter.fromLabelString(this, "cc_library", "//cc/txt_dep")
        .setList("textual_hdrs", "hdr.h")
        .write();
    createLibraryTargetWriter("//objc:lib").setList("deps", "//cc/txt_dep").write();
    ScratchAttributeWriter.fromLabelString(this, "cc_library", "//cc/lib")
        .setList("srcs", "a.cc")
        .setList("deps", "//objc:lib")
        .write();
    CommandAction compileAction = compileAction("//cc/lib", "a.o");
    assertThat(Artifact.toRootRelativePaths(compileAction.getPossibleInputsForTesting()))
        .contains("cc/txt_dep/hdr.h");
  }

  /** Regression test for https://github.com/bazelbuild/bazel/issues/7721. */
  @Test
  public void testToolchainRuntimeLibrariesSolibDir() throws Exception {
    MockObjcSupport.setupCcToolchainConfig(
        mockToolsConfig,
        MockObjcSupport.darwinX86_64()
            .withFeatures(
                CppRuleClasses.SUPPORTS_INTERFACE_SHARED_LIBRARIES,
                CppRuleClasses.SUPPORTS_DYNAMIC_LINKER));
    scratch.file(
        "foo/BUILD",
        "cc_test(name = 'd', deps = [':b'])",
        "objc_library(name = 'b', deps = [':a'])",
        "cc_library(name = 'a', srcs = ['a.c'])");
    ConfiguredTarget configuredTarget = getConfiguredTarget("//foo:d");
    assertThat(configuredTarget).isNotNull();
  }

  @Test
  public void testDirectFields() throws Exception {
    scratch.file(
        "x/BUILD",
        "objc_library(",
        "    name = 'foo',",
        "    srcs = ['foo.m', 'foo_impl.h'],",
        "    hdrs = ['foo.h'],",
        "    textual_hdrs = ['foo.inc'],",
        ")",
        "objc_library(",
        "    name = 'bar',",
        "    srcs = ['bar.m', 'bar_impl.h'],",
        "    hdrs = ['bar.h'],",
        "    textual_hdrs = ['bar.inc'],",
        "    deps = [':foo'],",
        ")");

    ObjcProvider dependerProvider = providerForTarget("//x:bar");
    assertThat(baseArtifactNames(dependerProvider.getDirect(ObjcProvider.HEADER)))
        .containsExactly("bar.h", "bar.inc");
    assertThat(baseArtifactNames(dependerProvider.getDirect(ObjcProvider.SOURCE)))
        .containsExactly("bar.m", "bar_impl.h");

    ConfiguredTarget target = getConfiguredTarget("//x:bar");
    CcCompilationContext ccCompilationContext =
        target.get(CcInfo.PROVIDER).getCcCompilationContext();
    assertThat(baseArtifactNames(ccCompilationContext.getDirectPublicHdrs()))
        .containsExactly("bar.h");
    assertThat(baseArtifactNames(ccCompilationContext.getDirectPrivateHdrs()))
        .containsExactly("bar_impl.h");
    assertThat(baseArtifactNames(ccCompilationContext.getTextualHdrs())).containsExactly("bar.inc");

    // Verify that the CppModuleMap objects are not added twice when merging the ARC and non-ARC
    // contexts.
    assertThat(ccCompilationContext.getExportingModuleMaps()).hasSize(1);
  }

  @Test
  public void testNameHasSlash() throws Exception {
    scratch.file("x/foo.m");
    checkError(
        "x",
        "foo/bar",
        "this attribute has unsupported character '/'",
        "objc_library(name = 'foo/bar', srcs = ['foo.m'])");
  }

  @Test
  public void testObjcLibraryLoadedThroughMacro() throws Exception {
    setupTestObjcLibraryLoadedThroughMacro(/* loadMacro= */ true);
    assertThat(getConfiguredTarget("//a:a")).isNotNull();
    assertNoEvents();
  }

  private void setupTestObjcLibraryLoadedThroughMacro(boolean loadMacro) throws Exception {
    scratch.file(
        "a/BUILD",
        getAnalysisMock().ccSupport().getMacroLoadStatement(loadMacro, "objc_library"),
        "objc_library(name='a', srcs=['a.cc'])");
  }

  @Test
  public void testGenerateDsymFlagPropagatesToObjcLibraryFeature() throws Exception {
    useConfiguration("--apple_generate_dsym");
    createLibraryTargetWriter("//objc/lib").setList("srcs", "a.m").write();
    CommandAction compileAction = compileAction("//objc/lib", "a.o");
    assertThat(compileAction.getArguments()).contains("-DDUMMY_GENERATE_DSYM_FILE");
  }

  @Test
  public void testArtifactsToAlwaysBuild() throws Exception {
    ConfiguredTarget x =
        scratchConfiguredTarget(
            "foo",
            "x",
            "objc_library(name = 'x', srcs = ['x.m'], non_arc_srcs = ['x2.m'], deps = [':y'])",
            "objc_library(name = 'y', srcs = ['y.m'], non_arc_srcs = ['y2.m'], )");
    assertThat(
            ActionsTestUtil.sortedBaseNamesOf(getOutputGroup(x, OutputGroupInfo.HIDDEN_TOP_LEVEL)))
        .isEqualTo("x.o x2.o y.o y2.o");
  }

  @Test
  public void testLangObjcFeature() throws Exception {
    MockObjcSupport.setupCcToolchainConfig(
        mockToolsConfig, MockObjcSupport.darwinX86_64().withFeatures(CppRuleClasses.PARSE_HEADERS));
    useConfiguration("--features=parse_headers", "--process_headers_in_dependencies");

    ConfiguredTarget x =
        scratchConfiguredTarget("foo", "x", "objc_library(name = 'x', hdrs = ['x.h'])");

    assertThat(getGeneratingCompileAction("_objs/x/arc/x.h.processed", x).getArguments())
        .contains("-DDUMMY_LANG_OBJC");
  }

  private CppCompileAction getGeneratingCompileAction(
      String packageRelativePath, ConfiguredTarget owner) {
    return (CppCompileAction) getGeneratingAction(getBinArtifact(packageRelativePath, owner));
  }

  @Test
  public void testProcessHeadersInArcOnly() throws Exception {
    MockObjcSupport.setupCcToolchainConfig(
        mockToolsConfig, MockObjcSupport.darwinX86_64().withFeatures(CppRuleClasses.PARSE_HEADERS));
    useConfiguration("--features=parse_headers", "--process_headers_in_dependencies");
    ConfiguredTarget x =
        scratchConfiguredTarget("foo", "x", "objc_library(name = 'x', hdrs = ['x.h'])");
    CcCompilationContext ccCompilationContext = x.get(CcInfo.PROVIDER).getCcCompilationContext();
    assertThat(Artifact.toRootRelativePaths(ccCompilationContext.getHeaderTokens()))
        .containsExactly("foo/_objs/x/arc/x.h.processed");
  }

  @Test
  public void testProcessHeadersInDependencies() throws Exception {
    MockObjcSupport.setupCcToolchainConfig(
        mockToolsConfig, MockObjcSupport.darwinX86_64().withFeatures(CppRuleClasses.PARSE_HEADERS));
    useConfiguration("--features=parse_headers", "--process_headers_in_dependencies");
    ConfiguredTarget x =
        scratchConfiguredTarget(
            "foo",
            "x",
            "objc_library(name = 'x', deps = [':y'])",
            "objc_library(name = 'y', hdrs = ['y.h'])");
    CcCompilationContext ccCompilationContext = x.get(CcInfo.PROVIDER).getCcCompilationContext();
    assertThat(ActionsTestUtil.baseNamesOf(ccCompilationContext.getHeaderTokens()))
        .isEqualTo("y.h.processed");
    assertThat(ActionsTestUtil.baseNamesOf(getOutputGroup(x, OutputGroupInfo.HIDDEN_TOP_LEVEL)))
        .isEqualTo("y.h.processed");
  }

  @Test
  public void testProcessHeadersInDependenciesOfCcBinary() throws Exception {
    MockObjcSupport.setupCcToolchainConfig(
        mockToolsConfig, MockObjcSupport.darwinX86_64().withFeatures(CppRuleClasses.PARSE_HEADERS));
    useConfiguration("--features=parse_headers", "--process_headers_in_dependencies");
    ConfiguredTarget x =
        scratchConfiguredTarget(
            "foo",
            "x",
            "cc_binary(name = 'x', deps = [':y', ':z'])",
            "cc_library(name = 'y', hdrs = ['y.h'])",
            "objc_library(name = 'z', srcs = ['z.h'])");
    String validation = ActionsTestUtil.baseNamesOf(getOutputGroup(x, OutputGroupInfo.VALIDATION));
    assertThat(validation).contains("y.h.processed");
    assertThat(validation).contains("z.h.processed");
  }

  @Test
  public void testSrcCompileActionMnemonic() throws Exception {
    MockObjcSupport.setupCcToolchainConfig(
        mockToolsConfig, MockObjcSupport.darwinX86_64().withFeatures(CppRuleClasses.PARSE_HEADERS));
    useConfiguration("--features=parse_headers", "--process_headers_in_dependencies");

    ConfiguredTarget x =
        scratchConfiguredTarget("foo", "x", "objc_library(name = 'x', srcs = ['a.m'])");

    assertThat(getGeneratingCompileAction("_objs/x/arc/a.o", x).getMnemonic())
        .isEqualTo("ObjcCompile");
  }

  @Test
  public void testHeaderCompileActionMnemonic() throws Exception {
    MockObjcSupport.setupCcToolchainConfig(
        mockToolsConfig, MockObjcSupport.darwinX86_64().withFeatures(CppRuleClasses.PARSE_HEADERS));
    useConfiguration("--features=parse_headers", "--process_headers_in_dependencies");

    ConfiguredTarget x =
        scratchConfiguredTarget(
            "foo", "x", "objc_library(name = 'x', srcs = ['y.h'], hdrs = ['z.h'])");

    assertThat(getGeneratingCompileAction("_objs/x/arc/y.h.processed", x).getMnemonic())
        .isEqualTo("ObjcCompile");
    assertThat(getGeneratingCompileAction("_objs/x/arc/z.h.processed", x).getMnemonic())
        .isEqualTo("ObjcCompile");
  }

  @Test
  public void testIncompatibleUseCppCompileHeaderMnemonic() throws Exception {
    MockObjcSupport.setupCcToolchainConfig(
        mockToolsConfig, MockObjcSupport.darwinX86_64().withFeatures(CppRuleClasses.PARSE_HEADERS));
    useConfiguration(
        "--incompatible_use_cpp_compile_header_mnemonic",
        "--features=parse_headers",
        "--process_headers_in_dependencies");

    ConfiguredTarget x =
        scratchConfiguredTarget(
            "foo", "x", "objc_library(name = 'x', srcs = ['a.m', 'y.h'], hdrs = ['z.h'])");

    assertThat(getGeneratingCompileAction("_objs/x/arc/a.o", x).getMnemonic())
        .isEqualTo("ObjcCompile");
    assertThat(getGeneratingCompileAction("_objs/x/arc/y.h.processed", x).getMnemonic())
        .isEqualTo("ObjcCompileHeader");
    assertThat(getGeneratingCompileAction("_objs/x/arc/z.h.processed", x).getMnemonic())
        .isEqualTo("ObjcCompileHeader");
  }

  @Test
  public void testLinkActionMnemonic() throws Exception {
    scratchConfiguredTarget("foo", "x", "objc_library(name = 'x', srcs = ['a.m'])");

    CppLinkAction archiveAction = (CppLinkAction) archiveAction("//foo:x");
    assertThat(archiveAction.getMnemonic()).isEqualTo("CppLink");
  }

  protected List<String> linkstampExecPaths(NestedSet<CcLinkingContext.Linkstamp> linkstamps) {
    return ActionsTestUtil.execPaths(
        ActionsTestUtil.transform(linkstamps.toList(), CcLinkingContext.Linkstamp::getArtifact));
  }

  @Test
  public void testPassesThroughLinkstamps() throws Exception {
    scratch.file(
        "x/BUILD",
        "objc_library(",
        "    name = 'foo',",
        "    deps = [':bar'],",
        ")",
        "cc_library(",
        "    name = 'bar',",
        "    linkstamp = 'bar.cc',",
        ")");

    assertThat(
            linkstampExecPaths(
                getConfiguredTarget("//x:foo")
                    .get(CcInfo.PROVIDER)
                    .getCcLinkingContext()
                    .getLinkstamps()))
        .containsExactly("x/bar.cc");
  }

  @Test
  public void testCompileLanguageApi() throws Exception {
    String fragments = "    fragments = ['google_cpp', 'cpp'],";
    if (AnalysisMock.get().isThisBazel()) {
      fragments = "    fragments = ['cpp'],";
    }
    scratch.file("myinfo/myinfo.bzl", "MyInfo = provider()");
    scratch.file("myinfo/BUILD");
    scratch.overwriteFile("tools/build_defs/foo/BUILD");
    scratch.file(
        "tools/build_defs/foo/extension.bzl",
        "load('//myinfo:myinfo.bzl', 'MyInfo')",
        "def _objc_starlark_library_impl(ctx):",
        "    toolchain = ctx.attr._my_cc_toolchain[cc_common.CcToolchainInfo]",
        "    features = ['objc-compile']",
        "    features.extend(ctx.features)",
        "    feature_configuration = cc_common.configure_features(",
        "        ctx = ctx,",
        "        cc_toolchain=toolchain,",
        "        requested_features = features,",
        "        unsupported_features = ctx.disabled_features)",
        "    foo_dict = {'string_variable': 'foo',",
        "            'string_sequence_variable' : ['foo'],",
        "            'string_depset_variable': depset(['foo'])}",
        "    (compilation_context, compilation_outputs) = cc_common.compile(",
        "        actions=ctx.actions,",
        "        feature_configuration=feature_configuration,",
        "        cc_toolchain=toolchain,",
        "        srcs=ctx.files.srcs,",
        "        name=ctx.label.name + '_suffix',",
        "        language='objc'",
        "    )",
        "    (linking_context,",
        "     linking_outputs) = cc_common.create_linking_context_from_compilation_outputs(",
        "        actions=ctx.actions,",
        "        feature_configuration=feature_configuration,",
        "        compilation_outputs=compilation_outputs,",
        "        name = ctx.label.name,",
        "        cc_toolchain=toolchain,",
        "        language='objc'",
        "    )",
        "    files_to_build = []",
        "    files_to_build.extend(compilation_outputs.pic_objects)",
        "    files_to_build.extend(compilation_outputs.objects)",
        "    library_to_link = None",
        "    if len(ctx.files.srcs) > 0:",
        "        library_to_link = linking_outputs.library_to_link",
        "        if library_to_link.pic_static_library != None:",
        "            files_to_build.append(library_to_link.pic_static_library)",
        "        files_to_build.append(library_to_link.dynamic_library)",
        "    return [MyInfo(libraries=[library_to_link]),",
        "            DefaultInfo(files=depset(files_to_build)),",
        "            CcInfo(compilation_context=compilation_context,",
        "                   linking_context=linking_context)]",
        "objc_starlark_library = rule(",
        "    implementation = _objc_starlark_library_impl,",
        "    attrs = {",
        "      'srcs': attr.label_list(allow_files=True),",
        "      '_my_cc_toolchain': attr.label(default =",
        "          '//a:alias')",
        "    },",
        fragments,
        ")");
    scratch.file(
        "foo/BUILD",
        "load('//tools/build_defs/foo:extension.bzl', 'objc_starlark_library')",
        "objc_starlark_library(",
        "    name = 'starlark_lib',",
        "    srcs = ['starlark_lib.m'],",
        ")");
    scratch.file("a/BUILD", "cc_toolchain_alias(name='alias')");
    getConfiguredTarget("//foo:starlark_lib");
    assertNoEvents();
  }

  @Test
  public void testCcTestUsesStaticLibraries() throws Exception {
    scratch.file(
        "x/BUILD",
        "cc_test(",
        "    name = 'test',",
        "    deps = [':foo'],",
        ")",
        "objc_library(",
        "    name = 'foo',",
        "    deps = [':bar'],",
        ")",
        "cc_library(",
        "    name = 'bar',",
        "    srcs = ['bar.a', 'bar.so'],",
        ")");

    assertThat(
            artifactsToStrings(
                getGeneratingAction(
                        getConfiguredTarget("//x:test")
                            .getProvider(FilesToRunProvider.class)
                            .getExecutable())
                    .getInputs()))
        .contains("src x/bar.a");
  }

  @Test
  public void testPassesDependenciesStaticLibrariesInCcInfo() throws Exception {
    scratch.file(
        "x/BUILD",
        "objc_library(",
        "    name = 'baz',",
        "    srcs = ['baz.mm'],",
        ")",
        "objc_library(",
        "    name = 'foo',",
        "    srcs = ['foo.mm'],",
        "    deps = [':baz'],",
        ")",
        "cc_library(",
        "    name = 'bar',",
        "    srcs = ['bar.cc'],",
        "    deps = [':foo'],",
        ")");

    CcInfo ccInfo = getConfiguredTarget("//x:bar").get(CcInfo.PROVIDER);

    assertThat(
            artifactsToStrings(
                ccInfo.getCcLinkingContext().getLinkerInputs().toList().stream()
                    .map(LinkerInput::getLibraries)
                    .flatMap(List::stream)
                    .map(LibraryToLink::getStaticLibrary)
                    .collect(toImmutableList())))
        .contains("/ x/libbaz.a");
  }

  @Test
  public void testGrepIncludesPassed() throws Exception {
    if (analysisMock.isThisBazel()) {
      return;
    }
    scratch.file("x/BUILD", "objc_library(", "    name = 'foo',", "    srcs = ['foo.mm']", ")");

    CppCompileAction compileA = (CppCompileAction) compileAction("//x:foo", "foo.o");
    assertThat(compileA.getGrepIncludes()).isNotNull();
  }

  @Test
  public void testModuleMapFileAccessed() throws Exception {
    scratch.file(
        "x/BUILD",
        "objc_library(",
        "    name = 'foo',",
        "    srcs = ['foo.mm'],",
        "    enable_modules = True,",
        "    module_map = 'foo.modulemap'",
        ")");

    getConfiguredTarget("//x:foo");
  }

  @Test
  public void testRuntimeDeps() throws Exception {
    scratch.file(
        "x/defs.bzl",
        "def _var_providing_rule_impl(ctx):",
        "   return [",
        "       CcInfo(),",
        "       apple_common.new_dynamic_framework_provider(objc=ctx.attr.dep[apple_common.Objc])",
        "   ]",
        "var_providing_rule = rule(",
        "   implementation = _var_providing_rule_impl,",
        "   attrs = { 'dep': attr.label(),}",
        ")");
    scratch.file(
        "x/BUILD",
        "load('//x:defs.bzl', 'var_providing_rule')",
        "objc_library(",
        "    name = 'baz',",
        "    srcs = ['baz.m'],",
        ")",
        "var_providing_rule(",
        "    name = 'foo',",
        "    dep = 'baz',",
        ")",
        "objc_library(",
        "    name = 'bar',",
        "    srcs = ['bar.m'],",
        "    runtime_deps = [':foo'],",
        ")");
    getConfiguredTarget("//x:bar");
  }

  @Test
  public void testRightOrderCcLibs() throws Exception {
    scratch.file(
        "x/BUILD",
        "cc_library(",
        "    name = 'qux',",
        "    srcs = ['qux.cc'],",
        ")",
        "cc_library(",
        "    name = 'baz',",
        "    srcs = ['baz.cc'],",
        ")",
        "objc_library(",
        "    name = 'quux',",
        "    srcs = ['quux.m'],",
        "    deps = ['qux'],",
        ")",
        "cc_library(",
        "    name = 'foo',",
        "    srcs = ['foo.cc'],",
        "    deps = [':baz'],",
        ")",
        "objc_library(",
        "    name = 'bar',",
        "    srcs = ['bar.m'],",
        "    deps = ['quux', ':foo'],",
        ")");
    assertThat(
            artifactsToStrings(
                getConfiguredTarget("//x:bar")
                    .get(ObjcProvider.STARLARK_CONSTRUCTOR)
                    .getCcLibraries()))
        .containsExactly("/ x/libqux.a", "/ x/libfoo.a", "/ x/libbaz.a")
        .inOrder();
  }

  @Test
  public void correctToolFilesUsed() throws Exception {
    scratch.file(
        "a/BUILD",
        "cc_toolchain_alias(name = 'a')",
        "objc_library(name = 'l', srcs = ['l.m'])",
        "objc_library(name = 'asm', srcs = ['a.s'])",
        "objc_library(name = 'preprocessed-asm', srcs = ['a.S'])");
    useConfiguration("--incompatible_use_specific_tool_files");

    ConfiguredTarget target = getConfiguredTarget("//a:a");
    CcToolchainProvider toolchainProvider = target.get(CcToolchainProvider.PROVIDER);

    RuleConfiguredTarget libTarget = (RuleConfiguredTarget) getConfiguredTarget("//a:l");
    ActionAnalysisMetadata linkAction =
        libTarget.getActions().stream()
            .filter((a) -> a.getMnemonic().equals("CppLink"))
            .collect(onlyElement());
    assertThat(linkAction.getInputs().toList())
        .containsAtLeastElementsIn(toolchainProvider.getArFiles().toList());

    ActionAnalysisMetadata objcCompileAction =
        libTarget.getActions().stream()
            .filter((a) -> a.getMnemonic().equals("ObjcCompile"))
            .collect(onlyElement());
    assertThat(objcCompileAction.getInputs().toList())
        .containsAtLeastElementsIn(toolchainProvider.getCompilerFiles().toList());

    ActionAnalysisMetadata asmAction =
        ((RuleConfiguredTarget) getConfiguredTarget("//a:asm"))
            .getActions().stream()
                .filter((a) -> a.getMnemonic().equals("CppCompile"))
                .collect(onlyElement());
    assertThat(asmAction.getInputs().toList())
        .containsAtLeastElementsIn(toolchainProvider.getAsFiles().toList());

    ActionAnalysisMetadata preprocessedAsmAction =
        ((RuleConfiguredTarget) getConfiguredTarget("//a:preprocessed-asm"))
            .getActions().stream()
                .filter((a) -> a.getMnemonic().equals("CppCompile"))
                .collect(onlyElement());
    assertThat(preprocessedAsmAction.getInputs().toList())
        .containsAtLeastElementsIn(toolchainProvider.getCompilerFiles().toList());
  }

  /** b/197608223 */
  @Test
  public void testCompilationPrerequisitesHasHeaders() throws Exception {
    scratch.file(
        "bin/BUILD",
        "objc_library(",
        "    name = 'objc',",
        "    srcs = ['objc.m'],",
        "    deps = [':cc'],",
        ")",
        "cc_library(",
        "    name = 'cc',",
        "    hdrs = ['cc.h'],",
        "    srcs = ['cc.cc'],",
        ")");

    useConfiguration("--apple_platform_type=ios", "--cpu=ios_x86_64");

    ConfiguredTarget cc = getConfiguredTarget("//bin:objc");

    assertThat(
            artifactsToStrings(
                cc.get(OutputGroupInfo.STARLARK_CONSTRUCTOR)
                    .getOutputGroup(OutputGroupInfo.COMPILATION_PREREQUISITES)))
        .contains("src bin/cc.h");
  }

  @Test
  public void testCoptsLocationIsExpanded() throws Exception {
    scratch.file(
        "bin/BUILD",
        "objc_library(",
        "    name = 'lib',",
        "    copts = ['$(rootpath lib1.m) $(location lib2.m) $(location data.data) $(execpath"
            + " header.h)'],",
        "    srcs = ['lib1.m'],",
        "    non_arc_srcs = ['lib2.m'],",
        "    data = ['data.data', 'lib2.m'],",
        "    hdrs = ['header.h'],",
        ")");

    useConfiguration("--apple_platform_type=ios", "--cpu=ios_x86_64");

    CppCompileAction compileA = (CppCompileAction) compileAction("//bin:lib", "lib1.o");
    assertThat(compileA.compileCommandLine.getCopts())
        .containsAtLeast("bin/lib1.m", "bin/lib2.m", "bin/data.data", "bin/header.h");
  }
}