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// Copyright 2014 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.devtools.common.options.OptionsParser.newOptionsParser;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertSame;
import static org.junit.Assert.fail;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
import java.util.List;
/**
* A test for {@link EnumConverter}.
*/
@RunWith(JUnit4.class)
public class EnumConverterTest {
private enum CompilationMode {
DBG, OPT
}
private static class CompilationModeConverter
extends EnumConverter<CompilationMode> {
public CompilationModeConverter() {
super(CompilationMode.class, "compilation mode");
}
}
@Test
public void converterForEnumWithTwoValues() throws Exception {
CompilationModeConverter converter = new CompilationModeConverter();
assertEquals(converter.convert("dbg"), CompilationMode.DBG);
assertEquals(converter.convert("opt"), CompilationMode.OPT);
try {
converter.convert("none");
fail();
} catch(OptionsParsingException e) {
assertEquals(e.getMessage(),
"Not a valid compilation mode: 'none' (should be dbg or opt)");
}
assertEquals("dbg or opt", converter.getTypeDescription());
}
private enum Fruit {
Apple, Banana, Cherry
}
private static class FruitConverter extends EnumConverter<Fruit> {
public FruitConverter() {
super(Fruit.class, "fruit");
}
}
@Test
public void typeDescriptionForEnumWithThreeValues() throws Exception {
FruitConverter converter = new FruitConverter();
// We always use lowercase in the user-visible messages:
assertEquals("apple, banana or cherry",
converter.getTypeDescription());
}
@Test
public void converterIsCaseInsensitive() throws Exception {
FruitConverter converter = new FruitConverter();
assertSame(Fruit.Banana, converter.convert("bAnANa"));
}
// Regression test: lists of enum using a subclass of EnumConverter don't work
private static class AlphabetEnumConverter extends EnumConverter<AlphabetEnum> {
public AlphabetEnumConverter() {
super(AlphabetEnum.class, "alphabet enum");
}
}
private static enum AlphabetEnum {
ALPHA, BRAVO, CHARLY, DELTA, ECHO
}
public static class EnumListTestOptions extends OptionsBase {
@Option(name = "goo",
allowMultiple = true,
converter = AlphabetEnumConverter.class,
defaultValue = "null")
public List<AlphabetEnum> goo;
}
@Test
public void enumList() throws OptionsParsingException {
OptionsParser parser = newOptionsParser(EnumListTestOptions.class);
parser.parse("--goo=ALPHA", "--goo=BRAVO");
EnumListTestOptions options = parser.getOptions(EnumListTestOptions.class);
assertNotNull(options.goo);
assertEquals(2, options.goo.size());
assertEquals(AlphabetEnum.ALPHA, options.goo.get(0));
assertEquals(AlphabetEnum.BRAVO, options.goo.get(1));
}
}
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