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// Copyright 2015 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.select;
import static com.google.common.truth.Truth.assertThat;
import static org.junit.Assert.fail;
import com.google.common.collect.Lists;
import com.google.devtools.build.lib.analysis.util.BuildViewTestCase;
import com.google.devtools.build.lib.cmdline.Label;
import com.google.devtools.build.lib.packages.AbstractAttributeMapper;
import com.google.devtools.build.lib.packages.Attribute;
import com.google.devtools.build.lib.packages.AttributeContainer;
import com.google.devtools.build.lib.packages.AttributeMap;
import com.google.devtools.build.lib.packages.BuildType;
import com.google.devtools.build.lib.packages.Package;
import com.google.devtools.build.lib.packages.Rule;
import com.google.devtools.build.lib.packages.RuleClass;
import com.google.devtools.build.lib.syntax.Type;
import java.util.List;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
/** Unit tests for {@link AbstractAttributeMapper}. */
@RunWith(JUnit4.class)
public class AbstractAttributeMapperTest extends BuildViewTestCase {
protected Rule rule;
protected AbstractAttributeMapper mapper;
private static class TestMapper extends AbstractAttributeMapper {
public TestMapper(Package pkg, RuleClass ruleClass, Label ruleLabel,
AttributeContainer attributes) {
super(pkg, ruleClass, ruleLabel, attributes);
}
}
@Before
public final void initializeRuleAndMapper() throws Exception {
rule = scratchRule("p", "myrule",
"cc_binary(name = 'myrule',",
" srcs = ['a', 'b', 'c'])");
RuleClass ruleClass = rule.getRuleClassObject();
mapper =
new TestMapper(rule.getPackage(), ruleClass, rule.getLabel(), rule.getAttributeContainer());
}
@Test
public void testRuleProperties() throws Exception {
assertThat(mapper.getName()).isEqualTo(rule.getName());
assertThat(mapper.getLabel()).isEqualTo(rule.getLabel());
}
@Test
public void testPackageDefaultProperties() throws Exception {
rule = scratchRule("a", "myrule",
"cc_binary(name = 'myrule',",
" srcs = ['a', 'b', 'c'])");
Package pkg = rule.getPackage();
assertThat(mapper.getPackageDefaultHdrsCheck()).isEqualTo(pkg.getDefaultHdrsCheck());
assertThat(mapper.getPackageDefaultTestOnly()).isEqualTo(pkg.getDefaultTestOnly());
assertThat(mapper.getPackageDefaultDeprecation()).isEqualTo(pkg.getDefaultDeprecation());
}
@Test
public void testAttributeTypeChecking() throws Exception {
// Good typing:
mapper.get("srcs", BuildType.LABEL_LIST);
// Bad typing:
try {
mapper.get("srcs", Type.BOOLEAN);
fail("Expected type mismatch to trigger an exception");
} catch (IllegalArgumentException e) {
// Expected.
}
// Unknown attribute:
try {
mapper.get("nonsense", Type.BOOLEAN);
fail("Expected non-existent type to trigger an exception");
} catch (IllegalArgumentException e) {
// Expected.
}
}
@Test
public void testGetAttributeType() throws Exception {
assertThat(mapper.getAttributeType("srcs")).isEqualTo(BuildType.LABEL_LIST);
assertThat(mapper.getAttributeType("nonsense")).isNull();
}
@Test
public void testGetAttributeDefinition() {
assertThat(mapper.getAttributeDefinition("srcs").getName()).isEqualTo("srcs");
assertThat(mapper.getAttributeDefinition("nonsense")).isNull();
}
@Test
public void testIsAttributeExplicitlySpecified() throws Exception {
assertThat(mapper.isAttributeValueExplicitlySpecified("srcs")).isTrue();
assertThat(mapper.isAttributeValueExplicitlySpecified("deps")).isFalse();
assertThat(mapper.isAttributeValueExplicitlySpecified("nonsense")).isFalse();
}
protected static class VisitationRecorder implements AttributeMap.AcceptsLabelAttribute {
public List<String> labelsVisited = Lists.newArrayList();
private final String attrName;
public VisitationRecorder(String attrName) {
this.attrName = attrName;
}
@Override
public void acceptLabelAttribute(Label label, Attribute attribute) {
if (attribute.getName().equals(attrName)) {
labelsVisited.add(label.toString());
}
}
}
@Test
public void testVisitation() throws Exception {
VisitationRecorder recorder = new VisitationRecorder("srcs");
mapper.visitLabels(recorder);
assertThat(recorder.labelsVisited).containsExactly("//p:a", "//p:b", "//p:c");
}
@Test
public void testComputedDefault() throws Exception {
// Should return a valid ComputedDefault instance since this is a computed default:
assertThat(mapper.getComputedDefault("$stl_default", BuildType.LABEL))
.isInstanceOf(Attribute.ComputedDefault.class);
// Should return null since this *isn't* a computed default:
assertThat(mapper.getComputedDefault("srcs", BuildType.LABEL_LIST)).isNull();
}
}
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