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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.packages;
import static com.google.common.truth.Truth.assertThat;
import com.google.devtools.build.lib.events.Location;
import com.google.devtools.build.lib.events.Location.LineAndColumn;
import com.google.devtools.build.lib.testutil.TestRuleClassProvider;
import java.util.Arrays;
import java.util.Collections;
import java.util.Random;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
/**
* Unit tests for {@link AttributeContainer}.
*/
@RunWith(JUnit4.class)
public class AttributeContainerTest {
private RuleClass ruleClass;
private AttributeContainer container;
private Attribute attribute1;
private Attribute attribute2;
@Before
public final void createAttributeContainer() throws Exception {
ruleClass =
TestRuleClassProvider.getRuleClassProvider().getRuleClassMap().get("testing_dummy_rule");
attribute1 = ruleClass.getAttributeByName("srcs");
attribute2 = ruleClass.getAttributeByName("dummyinteger");
container = new AttributeContainer(ruleClass);
}
@Test
public void testAttributeSettingAndRetrievalByName() throws Exception {
Object someValue1 = new Object();
Object someValue2 = new Object();
container.setAttributeValueByName(attribute1.getName(), someValue1);
container.setAttributeValueByName(attribute2.getName(), someValue2);
assertThat(container.getAttr(attribute1.getName())).isEqualTo(someValue1);
assertThat(container.getAttr(attribute2.getName())).isEqualTo(someValue2);
assertThat(container.getAttr("nomatch")).isNull();
}
@Test
public void testExplicitSpecificationsByName() throws Exception {
// Name-based setters are automatically considered explicit.
container.setAttributeValueByName(attribute1.getName(), new Object());
assertThat(container.isAttributeValueExplicitlySpecified(attribute1)).isTrue();
assertThat(container.isAttributeValueExplicitlySpecified("nomatch")).isFalse();
}
@Test
public void testExplicitSpecificationsByInstance() throws Exception {
Object someValue = new Object();
container.setAttributeValue(attribute1, someValue, true);
container.setAttributeValue(attribute2, someValue, false);
assertThat(container.isAttributeValueExplicitlySpecified(attribute1)).isTrue();
assertThat(container.isAttributeValueExplicitlySpecified(attribute2)).isFalse();
}
private static Location newLocation() {
return Location.fromPathAndStartColumn(null, 0, 0, new LineAndColumn(0, 0));
}
@Test
public void testAttributeLocation() throws Exception {
Location location1 = newLocation();
Location location2 = newLocation();
container.setAttributeLocation(attribute1, location1);
container.setAttributeLocation(attribute2, location2);
assertThat(container.getAttributeLocation(attribute1.getName())).isEqualTo(location1);
assertThat(container.getAttributeLocation(attribute2.getName())).isEqualTo(location2);
assertThat(container.getAttributeLocation("nomatch")).isNull();
}
@Test
public void testPackedState() throws Exception {
Random rng = new Random();
// The state packing machinery has special behavior at multiples of 8,
// so set enough explicit values and locations to exercise that.
final int N = 17;
Attribute[] attributes = new Attribute[N];
for (int i = 0; i < N; ++i) {
attributes[i] = ruleClass.getAttribute(i);
}
Object someValue = new Object();
Location[] locations = new Location[N];
for (int i = 0; i < N; ++i) {
locations[i] = newLocation();
}
assertThat(locations[0] != locations[1])
.isTrue(); // test relies on checking reference inequality
for (int explicitCount = 0; explicitCount <= N; ++explicitCount) {
for (int locationCount = 0; locationCount <= N; ++locationCount) {
AttributeContainer container = new AttributeContainer(ruleClass);
// Shuffle the attributes each time through, to exercise
// different stored indices and orderings.
Collections.shuffle(Arrays.asList(attributes));
// Also randomly interleave calls to the two setters.
int valuePassKey = rng.nextInt(1 << N);
int locationPassKey = rng.nextInt(1 << N);
for (int pass = 0; pass <= 1; ++pass) {
for (int i = 0; i < explicitCount; ++i) {
if (pass == ((valuePassKey >> i) & 1)) {
container.setAttributeValue(attributes[i], someValue, true);
}
}
for (int i = 0; i < locationCount; ++i) {
if (pass == ((locationPassKey >> i) & 1)) {
container.setAttributeLocation(attributes[i], locations[i]);
}
}
}
for (int i = 0; i < N; ++i) {
boolean expected = i < explicitCount;
assertThat(container.isAttributeValueExplicitlySpecified(attributes[i]))
.isEqualTo(expected);
}
for (int i = 0; i < N; ++i) {
Location expected = i < locationCount ? locations[i] : null;
assertThat(container.getAttributeLocation(attributes[i].getName())).isSameAs(expected);
}
}
}
}
}
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