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// Copyright 2016 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.cpp;
import static com.google.common.truth.Truth.assertThat;
import static com.google.devtools.build.lib.actions.util.ActionsTestUtil.NULL_ACTION_OWNER;
import com.google.common.collect.ImmutableMap;
import com.google.devtools.build.lib.actions.ActionExecutionContext;
import com.google.devtools.build.lib.actions.ActionKeyContext;
import com.google.devtools.build.lib.actions.Artifact;
import com.google.devtools.build.lib.actions.ArtifactRoot;
import com.google.devtools.build.lib.actions.util.DummyExecutor;
import com.google.devtools.build.lib.testutil.FoundationTestCase;
import com.google.devtools.build.lib.util.Fingerprint;
import com.google.devtools.build.lib.vfs.FileSystemUtils;
import com.google.devtools.build.lib.vfs.Path;
import com.google.devtools.build.lib.vfs.PathFragment;
import com.google.devtools.build.lib.vfs.Symlinks;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
/**
* A test for {@link CreateIncSymlinkAction}.
*/
@RunWith(JUnit4.class)
public class CreateIncSymlinkActionTest extends FoundationTestCase {
private final ActionKeyContext actionKeyContext = new ActionKeyContext();
@Test
public void testDifferentOrderSameActionKey() throws Exception {
Path includePath = rootDirectory.getRelative("out");
ArtifactRoot root = ArtifactRoot.asDerivedRoot(rootDirectory, includePath);
Artifact a = new Artifact(PathFragment.create("a"), root);
Artifact b = new Artifact(PathFragment.create("b"), root);
Artifact c = new Artifact(PathFragment.create("c"), root);
Artifact d = new Artifact(PathFragment.create("d"), root);
CreateIncSymlinkAction action1 =
new CreateIncSymlinkAction(NULL_ACTION_OWNER, ImmutableMap.of(a, b, c, d), includePath);
// Can't reuse the artifacts here; that would lead to DuplicateArtifactException.
a = new Artifact(PathFragment.create("a"), root);
b = new Artifact(PathFragment.create("b"), root);
c = new Artifact(PathFragment.create("c"), root);
d = new Artifact(PathFragment.create("d"), root);
CreateIncSymlinkAction action2 =
new CreateIncSymlinkAction(NULL_ACTION_OWNER, ImmutableMap.of(c, d, a, b), includePath);
assertThat(computeKey(action2)).isEqualTo(computeKey(action1));
}
@Test
public void testDifferentTargetsDifferentActionKey() throws Exception {
Path includePath = rootDirectory.getRelative("out");
ArtifactRoot root = ArtifactRoot.asDerivedRoot(rootDirectory, includePath);
Artifact a = new Artifact(PathFragment.create("a"), root);
Artifact b = new Artifact(PathFragment.create("b"), root);
CreateIncSymlinkAction action1 =
new CreateIncSymlinkAction(NULL_ACTION_OWNER, ImmutableMap.of(a, b), includePath);
// Can't reuse the artifacts here; that would lead to DuplicateArtifactException.
a = new Artifact(PathFragment.create("a"), root);
b = new Artifact(PathFragment.create("c"), root);
CreateIncSymlinkAction action2 =
new CreateIncSymlinkAction(NULL_ACTION_OWNER, ImmutableMap.of(a, b), includePath);
assertThat(computeKey(action2)).isNotEqualTo(computeKey(action1));
}
@Test
public void testDifferentSymlinksDifferentActionKey() throws Exception {
Path includePath = rootDirectory.getRelative("out");
ArtifactRoot root = ArtifactRoot.asDerivedRoot(rootDirectory, includePath);
Artifact a = new Artifact(PathFragment.create("a"), root);
Artifact b = new Artifact(PathFragment.create("b"), root);
CreateIncSymlinkAction action1 =
new CreateIncSymlinkAction(NULL_ACTION_OWNER, ImmutableMap.of(a, b), includePath);
// Can't reuse the artifacts here; that would lead to DuplicateArtifactException.
a = new Artifact(PathFragment.create("c"), root);
b = new Artifact(PathFragment.create("b"), root);
CreateIncSymlinkAction action2 =
new CreateIncSymlinkAction(NULL_ACTION_OWNER, ImmutableMap.of(a, b), includePath);
assertThat(computeKey(action2)).isNotEqualTo(computeKey(action1));
}
@Test
public void testExecute() throws Exception {
Path outputDir = rootDirectory.getRelative("out");
outputDir.createDirectory();
ArtifactRoot root = ArtifactRoot.asDerivedRoot(rootDirectory, outputDir);
Path symlink = rootDirectory.getRelative("out/a");
Artifact a = new Artifact(symlink, root);
Artifact b = new Artifact(PathFragment.create("b"), root);
CreateIncSymlinkAction action = new CreateIncSymlinkAction(NULL_ACTION_OWNER,
ImmutableMap.of(a, b), outputDir);
action.execute(makeDummyContext());
symlink.stat(Symlinks.NOFOLLOW);
assertThat(symlink.isSymbolicLink()).isTrue();
assertThat(b.getPath().asFragment()).isEqualTo(symlink.readSymbolicLink());
assertThat(rootDirectory.getRelative("a").exists()).isFalse();
}
private ActionExecutionContext makeDummyContext() {
DummyExecutor executor = new DummyExecutor(fileSystem, rootDirectory);
return new ActionExecutionContext(
executor, null, null, null, null, null, ImmutableMap.of(), ImmutableMap.of(), null, null);
}
@Test
public void testFileRemoved() throws Exception {
Path outputDir = rootDirectory.getRelative("out");
outputDir.createDirectory();
ArtifactRoot root = ArtifactRoot.asDerivedRoot(rootDirectory, outputDir);
Path symlink = rootDirectory.getRelative("out/subdir/a");
Artifact a = new Artifact(symlink, root);
Artifact b = new Artifact(PathFragment.create("b"), root);
CreateIncSymlinkAction action =
new CreateIncSymlinkAction(NULL_ACTION_OWNER, ImmutableMap.of(a, b), outputDir);
Path extra = rootDirectory.getRelative("out/extra");
FileSystemUtils.createEmptyFile(extra);
assertThat(extra.exists()).isTrue();
action.prepare(fileSystem, rootDirectory);
assertThat(extra.exists()).isFalse();
}
private String computeKey(CreateIncSymlinkAction action) {
Fingerprint fp = new Fingerprint();
action.computeKey(actionKeyContext, fp);
return fp.hexDigestAndReset();
}
}
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