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// Copyright 2009 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.analysis.config;
import static com.google.common.truth.Truth.assertThat;
import com.google.common.collect.ImmutableList;
import com.google.devtools.build.lib.analysis.config.BuildOptions.OptionsDiff;
import com.google.devtools.build.lib.rules.cpp.CppOptions;
import com.google.devtools.common.options.OptionsParser;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
/**
* A test for {@link BuildOptions}.
*/
@RunWith(JUnit4.class)
public class BuildOptionsTest {
private static final ImmutableList<Class<? extends FragmentOptions>> TEST_OPTIONS =
ImmutableList.<Class<? extends FragmentOptions>>of(BuildConfiguration.Options.class);
@Test
public void optionSetCaching() {
BuildOptions a = BuildOptions.of(TEST_OPTIONS, OptionsParser.newOptionsParser(TEST_OPTIONS));
BuildOptions b = BuildOptions.of(TEST_OPTIONS, OptionsParser.newOptionsParser(TEST_OPTIONS));
// The cache keys of the OptionSets must be equal even if these are
// different objects, if they were created with the same options (no options in this case).
assertThat(b.toString()).isEqualTo(a.toString());
assertThat(b.computeCacheKey()).isEqualTo(a.computeCacheKey());
}
@Test
public void cachingSpecialCases() throws Exception {
// You can add options here to test that their string representations are good.
String[] options = new String[] { "--run_under=//run_under" };
BuildOptions a = BuildOptions.of(TEST_OPTIONS, options);
BuildOptions b = BuildOptions.of(TEST_OPTIONS, options);
assertThat(b.toString()).isEqualTo(a.toString());
}
@Test
public void optionsEquality() throws Exception {
String[] options1 = new String[] { "--compilation_mode=opt" };
String[] options2 = new String[] { "--compilation_mode=dbg" };
// Distinct instances with the same values are equal:
assertThat(BuildOptions.of(TEST_OPTIONS, options1))
.isEqualTo(BuildOptions.of(TEST_OPTIONS, options1));
// Same fragments, different values aren't equal:
assertThat(
BuildOptions.of(TEST_OPTIONS, options1).equals(BuildOptions.of(TEST_OPTIONS, options2)))
.isFalse();
// Same values, different fragments aren't equal:
assertThat(
BuildOptions.of(TEST_OPTIONS, options1)
.equals(
BuildOptions.of(
ImmutableList.<Class<? extends FragmentOptions>>of(
BuildConfiguration.Options.class, CppOptions.class),
options1)))
.isFalse();
}
@Test
public void optionsDiff() throws Exception {
BuildOptions one = BuildOptions.of(TEST_OPTIONS, "--compilation_mode=opt", "cpu=k8");
BuildOptions two = BuildOptions.of(TEST_OPTIONS, "--compilation_mode=dbg", "cpu=k8");
BuildOptions three = BuildOptions.of(TEST_OPTIONS, "--compilation_mode=dbg", "cpu=k8");
OptionsDiff diffOneTwo = BuildOptions.diff(one, two);
OptionsDiff diffTwoThree = BuildOptions.diff(two, three);
assertThat(diffOneTwo.areSame()).isFalse();
assertThat(diffOneTwo.getFirst().keySet()).isEqualTo(diffOneTwo.getSecond().keySet());
assertThat(diffOneTwo.prettyPrint()).contains("opt");
assertThat(diffOneTwo.prettyPrint()).contains("dbg");
assertThat(diffTwoThree.areSame()).isTrue();
}
@Test
public void optionsDiff_differentFragments() throws Exception {
BuildOptions one =
BuildOptions.of(ImmutableList.<Class<? extends FragmentOptions>>of(CppOptions.class));
BuildOptions two = BuildOptions.of(TEST_OPTIONS);
OptionsDiff diff = BuildOptions.diff(one, two);
assertThat(diff.areSame()).isFalse();
assertThat(diff.getExtraFirstFragmentClasses()).containsExactly(CppOptions.class);
assertThat(diff.getExtraSecondFragmentClasses()).containsExactlyElementsIn(TEST_OPTIONS);
}
@Test
public void applyDiff() throws Exception {
BuildOptions one = BuildOptions.of(TEST_OPTIONS, "--compilation_mode=opt", "cpu=k8");
BuildOptions two = BuildOptions.of(TEST_OPTIONS, "--compilation_mode=dbg", "cpu=k8");
BuildOptions reconstructedTwo = one.applyDiff(BuildOptions.diffForReconstruction(one, two));
assertThat(reconstructedTwo).isEqualTo(two);
assertThat(reconstructedTwo).isNotSameAs(two);
BuildOptions reconstructedOne = one.applyDiff(BuildOptions.diffForReconstruction(one, one));
assertThat(reconstructedOne).isSameAs(one);
BuildOptions otherFragment = BuildOptions.of(ImmutableList.of(CppOptions.class));
assertThat(one.applyDiff(BuildOptions.diffForReconstruction(one, otherFragment)))
.isEqualTo(otherFragment);
assertThat(otherFragment.applyDiff(BuildOptions.diffForReconstruction(otherFragment, one)))
.isEqualTo(one);
}
}
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