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// Copyright 2022 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.skyframe;
import static com.google.common.truth.Truth.assertThat;
import static com.google.devtools.build.lib.testutil.MoreAsserts.assertContainsEvent;
import static com.google.devtools.build.lib.testutil.MoreAsserts.assertDoesNotContainEvent;
import com.google.common.collect.ImmutableSet;
import com.google.devtools.build.lib.buildtool.util.BuildIntegrationTestCase;
import com.google.devtools.build.lib.events.EventKind;
import com.google.devtools.build.lib.events.util.EventCollectionApparatus;
import com.google.devtools.build.lib.vfs.FileSystemUtils;
import com.google.devtools.build.lib.vfs.Path;
import com.google.testing.junit.testparameterinjector.TestParameter;
import com.google.testing.junit.testparameterinjector.TestParameterInjector;
import java.io.IOException;
import org.junit.BeforeClass;
import org.junit.Test;
import org.junit.runner.RunWith;
/** Tests for {@link TrackSourceDirectoriesFlag}. */
@RunWith(TestParameterInjector.class)
public final class TrackSourceDirectoriesIntegrationTest extends BuildIntegrationTestCase {
@Override
protected EventCollectionApparatus createEvents() {
return new EventCollectionApparatus(ImmutableSet.of(EventKind.FINISH));
}
@BeforeClass
public static void checkTrackSourceDirectoriesFlag() {
// Enabled via jvm_flags.
assertThat(TrackSourceDirectoriesFlag.trackSourceDirectories()).isTrue();
}
@Test
public void build_unchangedSourceDirectory_doesNotRebuild() throws Exception {
getWorkspace().getRelative("pkg/dir/empty_dir").createDirectoryAndParents();
write("pkg/dir/file", "foo");
write(
"pkg/BUILD",
"genrule(",
" name = 'a',",
" srcs = ['dir'],",
" outs = ['out'],",
" cmd = 'touch $@',",
")");
String testTarget = "//pkg:a";
String testTargetRebuildsEvent = "Executing genrule " + testTarget;
// Initial build
buildTarget(testTarget);
assertContainsEvent(events.collector(), testTargetRebuildsEvent);
events.collector().clear();
// Verify that the target doesn't rebuild without changes.
buildTarget(testTarget);
assertDoesNotContainEvent(events.collector(), testTargetRebuildsEvent);
}
private enum Change {
CREATE_EMPTY_DIRECTORY {
@Override
void apply(Path sourceDirectory) throws IOException {
sourceDirectory.getRelative("empty_dir/nested_empty_dir").createDirectory();
}
},
CREATE_EMPTY_FILE_IN_EMPTY_DIRECTORY {
@Override
void apply(Path sourceDirectory) throws IOException {
FileSystemUtils.createEmptyFile(sourceDirectory.getRelative("empty_dir/file"));
}
},
REMOVE_EMPTY_DIRECTORY {
@Override
void apply(Path sourceDirectory) throws IOException {
sourceDirectory.getChild("empty_dir").deleteTree();
}
},
REPLACE_EMPTY_DIRECTORY_WITH_EMPTY_FILE {
@Override
void apply(Path sourceDirectory) throws IOException {
sourceDirectory.getChild("empty_dir").deleteTree();
FileSystemUtils.createEmptyFile(sourceDirectory.getChild("empty_dir"));
}
},
CHANGE_FILE_CONTENT {
@Override
void apply(Path sourceDirectory) throws IOException {
FileSystemUtils.writeContentAsLatin1(sourceDirectory.getChild("file"), "changed");
}
};
abstract void apply(Path sourceDirectory) throws IOException;
}
@Test
public void build_changedSourceDirectory_rebuildsTarget(@TestParameter Change change)
throws Exception {
getWorkspace().getRelative("pkg/dir/empty_dir").createDirectoryAndParents();
write("pkg/dir/file", "foo");
write(
"pkg/BUILD",
"genrule(",
" name = 'a',",
" srcs = ['dir'],",
" outs = ['out'],",
" cmd = 'touch $@',",
")");
String testTarget = "//pkg:a";
String testTargetRebuildsEvent = "Executing genrule " + testTarget;
// Initial build
buildTarget(testTarget);
assertContainsEvent(events.collector(), testTargetRebuildsEvent);
events.collector().clear();
// Change source directory and verify that the target is rebuilt as expected.
change.apply(getWorkspace().getRelative("pkg/dir"));
buildTarget(testTarget);
assertContainsEvent(events.collector(), testTargetRebuildsEvent);
}
}