// 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.skyframe;

import static com.google.devtools.build.lib.skyframe.TargetPatternPhaseKeyTest.Flag.BUILD_TESTS_ONLY;
import static com.google.devtools.build.lib.skyframe.TargetPatternPhaseKeyTest.Flag.COMPILE_ONE_DEPENDENCY;
import static com.google.devtools.build.lib.skyframe.TargetPatternPhaseKeyTest.Flag.DETERMINE_TESTS;

import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableSet;
import com.google.common.testing.EqualsTester;
import com.google.common.testing.NullPointerTester;
import com.google.devtools.build.lib.events.NullEventHandler;
import com.google.devtools.build.lib.pkgcache.LoadingOptions;
import com.google.devtools.build.lib.pkgcache.TestFilter;
import com.google.devtools.build.lib.skyframe.TargetPatternPhaseValue.TargetPatternPhaseKey;
import com.google.devtools.build.lib.vfs.PathFragment;
import com.google.devtools.common.options.Options;
import javax.annotation.Nullable;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;

/** Tests for {@link TargetPatternPhaseKey}. */
@RunWith(JUnit4.class)
public class TargetPatternPhaseKeyTest {
  static enum Flag {
    COMPILE_ONE_DEPENDENCY,
    BUILD_TESTS_ONLY,
    DETERMINE_TESTS
  }

  @Test
  public void testEquality() throws Exception {
    new EqualsTester()
        .addEqualityGroup(of(ImmutableList.of("a"), PathFragment.create("offset")))
        .addEqualityGroup(of(ImmutableList.of("b"), PathFragment.create("offset")))
        .addEqualityGroup(of(ImmutableList.of("b"), PathFragment.EMPTY_FRAGMENT))
        .addEqualityGroup(of(ImmutableList.of("c"), PathFragment.EMPTY_FRAGMENT))
        .addEqualityGroup(of(ImmutableList.of(), PathFragment.EMPTY_FRAGMENT))
        .addEqualityGroup(
            of(
                ImmutableList.of(),
                PathFragment.EMPTY_FRAGMENT,
                ImmutableList.of(),
                false,
                true,
                null,
                COMPILE_ONE_DEPENDENCY))
        .addEqualityGroup(
            of(
                ImmutableList.of(),
                PathFragment.EMPTY_FRAGMENT,
                ImmutableList.of(),
                false,
                false,
                null,
                COMPILE_ONE_DEPENDENCY))
        .addEqualityGroup(
            of(
                ImmutableList.of(),
                PathFragment.EMPTY_FRAGMENT,
                ImmutableList.of(),
                true,
                true,
                null,
                COMPILE_ONE_DEPENDENCY))
        .addEqualityGroup(
            of(
                ImmutableList.of(),
                PathFragment.EMPTY_FRAGMENT,
                ImmutableList.of(),
                true,
                false,
                null,
                COMPILE_ONE_DEPENDENCY))
        .addEqualityGroup(
            of(
                ImmutableList.of(),
                PathFragment.EMPTY_FRAGMENT,
                ImmutableList.of(),
                false,
                true,
                emptyTestFilter(),
                BUILD_TESTS_ONLY))
        .addEqualityGroup(
            of(
                ImmutableList.of(),
                PathFragment.EMPTY_FRAGMENT,
                ImmutableList.of(),
                true,
                true,
                emptyTestFilter(),
                BUILD_TESTS_ONLY))
        .addEqualityGroup(
            of(
                ImmutableList.of(),
                PathFragment.EMPTY_FRAGMENT,
                ImmutableList.of(),
                false,
                true,
                emptyTestFilter(),
                DETERMINE_TESTS))
        .addEqualityGroup(
            of(
                ImmutableList.of(),
                PathFragment.EMPTY_FRAGMENT,
                ImmutableList.of(),
                true,
                true,
                emptyTestFilter(),
                DETERMINE_TESTS))
        .addEqualityGroup(
            of(
                ImmutableList.of(),
                PathFragment.EMPTY_FRAGMENT,
                ImmutableList.of("a"),
                false,
                true,
                null))
        .addEqualityGroup(
            of(
                ImmutableList.of(),
                PathFragment.EMPTY_FRAGMENT,
                ImmutableList.of("a"),
                true,
                true,
                null))
        .testEquals();
  }

  private static TargetPatternPhaseKey of(
      ImmutableList<String> targetPatterns,
      PathFragment offset,
      ImmutableList<String> buildTagFilter,
      boolean includeManualTests,
      boolean expandTestSuites,
      @Nullable TestFilter testFilter,
      Flag... flags) {
    ImmutableSet<Flag> set = ImmutableSet.copyOf(flags);
    boolean compileOneDependency = set.contains(Flag.COMPILE_ONE_DEPENDENCY);
    boolean buildTestsOnly = set.contains(Flag.BUILD_TESTS_ONLY);
    boolean determineTests = set.contains(Flag.DETERMINE_TESTS);
    return new TargetPatternPhaseKey(targetPatterns, offset, compileOneDependency, buildTestsOnly,
        determineTests, buildTagFilter, includeManualTests, expandTestSuites, testFilter);
  }

  private static TargetPatternPhaseKey of(
      ImmutableList<String> targetPatterns, PathFragment offset) {
    return of(targetPatterns, offset, ImmutableList.of(), false, true, null);
  }

  private static TestFilter emptyTestFilter() {
    LoadingOptions options = Options.getDefaults(LoadingOptions.class);
    return TestFilter.forOptions(options, NullEventHandler.INSTANCE, ImmutableSet.of());
  }

  @Test
  public void testNull() {
    new NullPointerTester()
        .testAllPublicConstructors(TargetPatternPhaseKey.class);
  }
}
