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// Copyright 2019 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.common.options;
import static java.util.stream.Collectors.toList;
import com.google.common.flogger.GoogleLogger;
import com.google.devtools.build.lib.util.Classpath;
import com.google.devtools.build.lib.util.Classpath.ClassPathException;
import java.util.Arrays;
import java.util.List;
import java.util.Set;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;
import org.junit.runners.Parameterized.Parameter;
import org.junit.runners.Parameterized.Parameters;
/**
* Test to make sure all {@link Option}-annotated fields in <i>Prod</i> code have an {@link
* Option#defaultValue()} that a corresponding {@link Option#converter()} can handle.<br>
* {@link Option}-annotated field is considered to be in <i>Prod</i> code if its declaring class and
* all its enclosing classes do not have {@link RunWith} annotation.
*
* @see OptionDefinition#getDefaultValue()
*/
@RunWith(Parameterized.class)
public class OptionDefaultValueConversionTest {
private static final GoogleLogger logger = GoogleLogger.forEnclosingClass();
@Rule public ExpectedException thrown = ExpectedException.none();
@Parameter public OptionDefinition optionDefinitionUnderTest;
@Test
public void shouldConvertDefaultValue() {
// assert
thrown = ExpectedException.none();
// act
optionDefinitionUnderTest.getDefaultValue();
}
@Parameters
public static List<OptionDefinition> getAllProdOptionDefinitions() {
try {
Set<Class<?>> allClasses = Classpath.findClasses("com.google.devtools");
List<OptionDefinition> optionDefinitions =
allClasses.stream()
.filter(c -> !isTestClass(c))
.flatMap(c -> Arrays.stream(c.getFields()))
.filter(f -> f.isAnnotationPresent(Option.class))
.map(OptionDefinition::extractOptionDefinition)
.collect(toList());
logger.atFine().log(
"Found %d Option-annotated fields in Prod code", optionDefinitions.size());
return optionDefinitions;
} catch (ClassPathException ex) {
throw new RuntimeException("Unable to scan classpath", ex);
}
}
private static boolean isTestClass(Class<?> initialClazz) {
Class<?> clazz = initialClazz;
do {
if (clazz.isAnnotationPresent(RunWith.class)) {
logger.atFiner().log("Filtered out %s: is a Test class", initialClazz);
return true;
}
clazz = clazz.getEnclosingClass();
} while (clazz != null);
return false;
}
}