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// 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.truth.Truth.assertThat;
import com.google.devtools.build.lib.actions.Artifact;
import com.google.devtools.build.lib.actions.CommandAction;
import com.google.devtools.build.lib.actions.util.ActionsTestUtil;
import com.google.devtools.build.lib.collect.nestedset.NestedSet;
import com.google.devtools.build.lib.rules.objc.ObjcCommandLineOptions.ObjcCrosstoolMode;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
/** Test case for discovery of used headers during compilation. */
@RunWith(JUnit4.class)
public class HeaderDiscoveryTest extends ObjcRuleTestCase {
@Override
protected void useConfiguration(String... args) throws Exception {
// Don't test crosstool for header discovery
useConfiguration(ObjcCrosstoolMode.OFF, args);
}
private NestedSet<Artifact> getDiscoveredInputsForDotdFile(String... lines) throws Exception {
createLibraryTargetWriter("//objc:lib")
.setList("srcs", "a.m")
.setList("hdrs", "used.h", "not_used.h")
.write();
CommandAction commandAction = compileAction("//objc:lib", "a.o");
assertThat(commandAction).isInstanceOf(ObjcCompileAction.class);
ObjcCompileAction objcCompileAction = (ObjcCompileAction) commandAction;
Artifact dotdFile = ActionsTestUtil.getOutput(objcCompileAction, "a.d");
scratch.file(dotdFile.getPath().toString(), lines);
return objcCompileAction.discoverInputsFromDotdFiles(
directories.getExecRoot(), view.getArtifactFactory());
}
@Test
public void testObjcHeaderDiscoveryFindsInputs() throws Exception {
NestedSet<Artifact> discoveredInputs =
getDiscoveredInputsForDotdFile("a.o: \\", " objc/a.m \\", " objc/used.h \\");
assertThat(Artifact.toExecPaths(discoveredInputs)).containsExactly("objc/a.m", "objc/used.h");
}
@Test
public void testObjcHeaderDiscoveryIgnoresOutsideExecRoot() throws Exception {
NestedSet<Artifact> discoveredInputs =
getDiscoveredInputsForDotdFile("a.o: \\", " /foo/a.h \\", " /bar/b.h");
assertThat(Artifact.toExecPaths(discoveredInputs)).isEmpty();
}
@Test
public void testInputsArePruned() throws Exception {
NestedSet<Artifact> discoveredInputs =
getDiscoveredInputsForDotdFile("a.o: \\", " objc/a.m \\", " objc/used.h \\");
ObjcCompileAction compileAction = (ObjcCompileAction) compileAction("//objc:lib", "a.o");
compileAction.updateActionInputs(discoveredInputs);
assertThat(Artifact.toExecPaths(compileAction.getInputs())).doesNotContain("objc/not_used.h");
}
@Test
public void testSrcsAreMandatoryInputs() throws Exception {
NestedSet<Artifact> discoveredInputs =
getDiscoveredInputsForDotdFile("a.o: \\", " objc/used.h");
ObjcCompileAction compileAction = (ObjcCompileAction) compileAction("//objc:lib", "a.o");
compileAction.updateActionInputs(discoveredInputs);
assertThat(Artifact.toExecPaths(compileAction.getInputs())).contains("objc/a.m");
}
}
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