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// Copyright 2017 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 com.google.common.truth.Truth.assertThat;
import static org.junit.Assert.fail;
import com.google.common.collect.ImmutableList;
import com.google.common.jimfs.Jimfs;
import java.io.IOException;
import java.nio.file.FileSystem;
import java.nio.file.Path;
import java.util.List;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
/**
* Tests {@link ParamsFilePreProcessor}.
*/
@RunWith(JUnit4.class)
public class ParamsFilePreProcessorTest {
private static final ImmutableList<String> PARAM_FILE_ARGS =
ImmutableList.of("params", "file", "args");
private static class MockParamsFilePreProcessor extends ParamsFilePreProcessor {
MockParamsFilePreProcessor(FileSystem fs) {
super(fs);
}
@Override
protected List<String> parse(Path paramsFile) throws IOException, OptionsParsingException {
return PARAM_FILE_ARGS;
}
}
private FileSystem fileSystem;
private ParamsFilePreProcessor paramsFilePreProcessor;
@Before
public void setup() {
fileSystem = Jimfs.newFileSystem();
paramsFilePreProcessor = new MockParamsFilePreProcessor(fileSystem);
}
@Test
public void testNoArgs() throws OptionsParsingException {
List<String> args = paramsFilePreProcessor.preProcess(ImmutableList.of());
assertThat(args).isEmpty();
}
@Test
public void testNoParamsFile() throws OptionsParsingException {
List<String> rawArgs = ImmutableList.of("--foo", "foo val");
List<String> args = paramsFilePreProcessor.preProcess(rawArgs);
assertThat(args).containsExactlyElementsIn(rawArgs).inOrder();
}
@Test
public void testParamsFileNotFirst() throws OptionsParsingException {
List<String> rawArgs = ImmutableList.of("--foo", "foo val", "@paramsFile");
List<String> args = paramsFilePreProcessor.preProcess(rawArgs);
assertThat(args).containsExactlyElementsIn(rawArgs).inOrder();
}
@Test
public void testTooManyArgs() throws OptionsParsingException {
List<String> rawArgs = ImmutableList.of("@paramsFile", "--foo", "foo val");
try {
paramsFilePreProcessor.preProcess(rawArgs);
fail("Expected OptionsParsingException");
} catch (OptionsParsingException expected) {
assertThat(expected)
.hasMessageThat()
.isEqualTo(
String.format(ParamsFilePreProcessor.TOO_MANY_ARGS_ERROR_MESSAGE_FORMAT, rawArgs));
}
}
@Test
public void testExceptionDuringParsing() throws OptionsParsingException {
ParamsFilePreProcessor exceptionParser = new ParamsFilePreProcessor(fileSystem) {
@Override
protected List<String> parse(Path paramsFile) throws IOException, OptionsParsingException {
throw new IOException("Error parsing " + paramsFile);
}
};
String paramsFileName = "paramsFile";
Path paramsFile = fileSystem.getPath(paramsFileName);
try {
exceptionParser.preProcess(ImmutableList.of("@" + paramsFileName));
fail("Expected OptionsParsingException");
} catch (OptionsParsingException expected) {
assertThat(expected)
.hasMessageThat()
.isEqualTo(
String.format(
ParamsFilePreProcessor.ERROR_MESSAGE_FORMAT,
paramsFile,
"Error parsing " + paramsFileName));
}
}
@Test
public void testParamsFile() throws OptionsParsingException {
List<String> args = paramsFilePreProcessor.preProcess(ImmutableList.of("@paramsFile"));
assertThat(args).containsExactlyElementsIn(PARAM_FILE_ARGS).inOrder();
}
}
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