Add BuildFileContentsGeneratorTest.
PiperOrigin-RevId: 413946076
diff --git a/src/test/java/com/google/devtools/build/lib/BUILD b/src/test/java/com/google/devtools/build/lib/BUILD
index ce4056f..171341d 100644
--- a/src/test/java/com/google/devtools/build/lib/BUILD
+++ b/src/test/java/com/google/devtools/build/lib/BUILD
@@ -28,6 +28,7 @@
"//src/test/java/com/google/devtools/build/lib/dynamic:srcs",
"//src/test/java/com/google/devtools/build/lib/events:srcs",
"//src/test/java/com/google/devtools/build/lib/exec:srcs",
+ "//src/test/java/com/google/devtools/build/lib/generatedprojecttest:srcs",
"//src/test/java/com/google/devtools/build/lib/generatedprojecttest/util:srcs",
"//src/test/java/com/google/devtools/build/lib/graph:srcs",
"//src/test/java/com/google/devtools/build/lib/io:srcs",
diff --git a/src/test/java/com/google/devtools/build/lib/generatedprojecttest/BUILD b/src/test/java/com/google/devtools/build/lib/generatedprojecttest/BUILD
new file mode 100644
index 0000000..800d997
--- /dev/null
+++ b/src/test/java/com/google/devtools/build/lib/generatedprojecttest/BUILD
@@ -0,0 +1,31 @@
+load("@rules_java//java:defs.bzl", "java_test")
+
+package(
+ default_testonly = 1,
+ default_visibility = ["//src:__subpackages__"],
+)
+
+licenses(["notice"])
+
+filegroup(
+ name = "srcs",
+ testonly = 0,
+ srcs = glob(["*"]),
+ visibility = ["//src:__subpackages__"],
+)
+
+# Unit test for BuildFileContentsGenerator
+java_test(
+ name = "BuildFileContentsGeneratorTest",
+ size = "small",
+ srcs = ["BuildFileContentsGeneratorTest.java"],
+ runtime_deps = ["//src/main/java/com/google/devtools/build/lib/bazel/rules"],
+ deps = [
+ "//src/main/java/com/google/devtools/build/lib/vfs",
+ "//src/main/java/net/starlark/java/syntax",
+ "//src/test/java/com/google/devtools/build/lib/generatedprojecttest/util:testutil",
+ "//src/test/java/com/google/devtools/build/lib/testutil",
+ "//third_party:junit4",
+ "//third_party:truth",
+ ],
+)
diff --git a/src/test/java/com/google/devtools/build/lib/generatedprojecttest/BuildFileContentsGeneratorTest.java b/src/test/java/com/google/devtools/build/lib/generatedprojecttest/BuildFileContentsGeneratorTest.java
new file mode 100644
index 0000000..28996ba
--- /dev/null
+++ b/src/test/java/com/google/devtools/build/lib/generatedprojecttest/BuildFileContentsGeneratorTest.java
@@ -0,0 +1,92 @@
+// Copyright 2021 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.generatedprojecttest;
+
+import static com.google.common.truth.Truth.assertThat;
+import static org.junit.Assert.assertThrows;
+
+import com.google.devtools.build.lib.generatedprojecttest.util.BuildFileContentsGenerator;
+import com.google.devtools.build.lib.generatedprojecttest.util.TestProjectBuilder;
+import com.google.devtools.build.lib.testutil.BuildRuleBuilder;
+import com.google.devtools.build.lib.testutil.Scratch;
+import com.google.devtools.build.lib.vfs.FileSystemUtils;
+import com.google.devtools.build.lib.vfs.Path;
+import java.io.IOException;
+import net.starlark.java.syntax.ParserInput;
+import net.starlark.java.syntax.StarlarkFile;
+import net.starlark.java.syntax.SyntaxError;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.JUnit4;
+
+/**
+ * Tests for {@code BuildFileContentsGenerator}.
+ */
+@RunWith(JUnit4.class)
+public final class BuildFileContentsGeneratorTest {
+
+ /**
+ * The generator being tested.
+ */
+ private final BuildFileContentsGenerator generator = new BuildFileContentsGenerator();
+
+ @Test
+ public void testSetDefaultPackageVisibility() throws IllegalStateException {
+ generator.setDefaultPackageVisibility("//visibility:private");
+ assertThat(generator.getContents())
+ .startsWith("package(default_visibility = ['//visibility:private'])");
+ }
+
+ @Test
+ public void defaultPackageVisibilityIsAddedToStartOfBuildFile() throws IllegalStateException {
+ generator.addRule(new BuildRuleBuilder("java_library", generator.uniqueRuleName()));
+ generator.setDefaultPackageVisibility("//visibility:private");
+ assertThat(generator.getContents())
+ .startsWith("package(default_visibility = ['//visibility:private'])");
+ }
+
+ @Test
+ public void defaultPackageVisibilityDefaultsToPublic() throws IllegalStateException {
+ generator.addRule(new BuildRuleBuilder("java_library", generator.uniqueRuleName()));
+ assertThat(generator.getContents())
+ .startsWith("package(default_visibility = ['//visibility:public'])");
+ }
+
+ @Test
+ public void settingDefaultPackageVisibilityTwiceCausesException() throws IllegalStateException {
+ generator.setDefaultPackageVisibility("//visibility:private");
+ assertThrows(
+ IllegalStateException.class,
+ () -> generator.setDefaultPackageVisibility("//visibility:private"));
+ }
+
+ @Test
+ public void testContentsSyntax() throws IOException {
+ // TODO(blaze-team): (2012) write various simple generator examples to test the generated syntax
+ TestProjectBuilder builder = new TestProjectBuilder("tmp");
+ BuildFileContentsGenerator generator = new BuildFileContentsGenerator();
+ builder.createFileInDir("/a", "BUILD", generator);
+ Scratch scratch = builder.getScratch();
+ Path path = scratch.resolve("/tmp/a/BUILD");
+
+ byte[] bytes = FileSystemUtils.readWithKnownFileSize(path, path.getFileSize());
+ ParserInput input = ParserInput.fromLatin1(bytes, path.toString());
+ StarlarkFile file = StarlarkFile.parse(input);
+ for (SyntaxError error : file.errors()) {
+ System.err.println(error);
+ }
+ assertThat(file.ok()).isTrue();
+ }
+}
