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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 com.google.common.collect.ImmutableList;
import com.google.common.collect.Lists;
import com.google.devtools.build.lib.cmdline.Label;
import com.google.devtools.build.lib.events.util.EventCollectionApparatus;
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.packages.util.PackageFactoryApparatus;
import com.google.devtools.build.lib.syntax.Type;
import com.google.devtools.build.lib.testutil.FoundationTestCase;
import com.google.devtools.build.lib.testutil.MoreAsserts;
import com.google.devtools.build.lib.testutil.Scratch;
import com.google.devtools.build.lib.vfs.Path;
import java.util.List;
/**
* Unit tests for {@link AbstractAttributeMapper}.
*/
public class AbstractAttributeMapperTest extends FoundationTestCase {
private Package pkg;
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);
}
}
protected Rule createRule(String pkgPath, String ruleName, String... ruleDef) throws Exception {
Scratch scratch = new Scratch();
EventCollectionApparatus events = new EventCollectionApparatus();
PackageFactoryApparatus packages = new PackageFactoryApparatus(events, scratch);
Path buildFile = scratch.file(pkgPath + "/BUILD", ruleDef);
pkg = packages.createPackage(pkgPath, buildFile);
return pkg.getRule(ruleName);
}
@Override
public void setUp() throws Exception {
super.setUp();
rule = createRule("x", "myrule",
"cc_binary(name = 'myrule',",
" srcs = ['a', 'b', 'c'])");
RuleClass ruleClass = rule.getRuleClassObject();
mapper = new TestMapper(pkg, ruleClass, rule.getLabel(), rule.getAttributeContainer());
}
public void testRuleProperties() throws Exception {
assertEquals(rule.getName(), mapper.getName());
assertEquals(rule.getLabel(), mapper.getLabel());
}
public void testPackageDefaultProperties() throws Exception {
assertEquals(pkg.getDefaultHdrsCheck(), mapper.getPackageDefaultHdrsCheck());
assertEquals(pkg.getDefaultTestOnly(), mapper.getPackageDefaultTestOnly());
assertEquals(pkg.getDefaultDeprecation(), mapper.getPackageDefaultDeprecation());
}
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.
}
}
public void testGetAttributeType() throws Exception {
assertEquals(BuildType.LABEL_LIST, mapper.getAttributeType("srcs"));
assertNull(mapper.getAttributeType("nonsense"));
}
public void testGetAttributeDefinition() {
assertEquals("srcs", mapper.getAttributeDefinition("srcs").getName());
assertNull(mapper.getAttributeDefinition("nonsense"));
}
public void testIsAttributeExplicitlySpecified() throws Exception {
assertTrue(mapper.isAttributeValueExplicitlySpecified("srcs"));
assertFalse(mapper.isAttributeValueExplicitlySpecified("deps"));
assertFalse(mapper.isAttributeValueExplicitlySpecified("nonsense"));
}
protected static class VisitationRecorder implements AttributeMap.AcceptsLabelAttribute {
public List<String> labelsVisited = Lists.newArrayList();
@Override
public void acceptLabelAttribute(Label label, Attribute attribute) {
if (attribute.getName().equals("srcs")) {
labelsVisited.add(label.toString());
}
}
}
public void testVisitation() throws Exception {
VisitationRecorder recorder = new VisitationRecorder();
mapper.visitLabels(recorder);
MoreAsserts.assertSameContents(
ImmutableList.of("//x:a", "//x:b", "//x:c"), recorder.labelsVisited);
}
public void testComputedDefault() throws Exception {
// Should return a valid ComputedDefault instance since this is a computed default:
assertThat(mapper.getComputedDefault("$stl", BuildType.LABEL))
.isInstanceOf(Attribute.ComputedDefault.class);
// Should return null since this *isn't* a computed default:
assertNull(mapper.getComputedDefault("srcs", BuildType.LABEL_LIST));
}
}
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