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/**
* Copyright (C) 2010 the original author or authors.
* See the notice.md file distributed with this work for additional
* information regarding copyright ownership.
*
* 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.beust.jcommander;
import com.beust.jcommander.internal.Lists;
import com.beust.jcommander.internal.Sets;
import org.testng.Assert;
import org.testng.annotations.Test;
import java.util.Iterator;
import java.util.List;
import java.util.Set;
/**
* Test behaviour of default parameter values
* @author rodionmoiseev
*/
public class DefaultValueTest {
@Test
public void emptyDefaultValueForListParameterStaysEmptyIfNotAssignedOrIsSetOtherwise() {
MyOptsWithEmptyDefaults opts = new MyOptsWithEmptyDefaults();
JCommander cmd = new JCommander(opts);
cmd.parse("-a", "anotherValue");
Assert.assertEquals(opts.list.size(), 1);
Assert.assertEquals(opts.list.get(0), "anotherValue");
Assert.assertEquals(opts.set.size(), 0);
}
@Test
public void defaultValueForListParametersGetsOverwrittenWithSpecifiedValueOrStaysAsDefaultOtherwise() {
MyOptsWithDefaultValues opts = new MyOptsWithDefaultValues();
JCommander cmd = new JCommander(opts);
cmd.parse("-a", "anotherValue");
Assert.assertEquals(opts.list.size(), 1);
Assert.assertEquals(opts.list.get(0), "anotherValue");
Assert.assertEquals(opts.set.size(), 1);
Assert.assertEquals(opts.set.iterator().next(), "defaultValue");
}
@Test
public void anyNumberOfValuesCanBeSetToListParameters_ForEmptyDefaults(){
MyOptsWithEmptyDefaults opts = new MyOptsWithEmptyDefaults();
testSettingMultipleValuesToListTypeParameters(opts);
}
@Test
public void anyNumberOfValuesCanBeSetToListParameters_ForNonEmptyDefaults(){
MyOptsWithDefaultValues opts = new MyOptsWithDefaultValues();
testSettingMultipleValuesToListTypeParameters(opts);
}
private void testSettingMultipleValuesToListTypeParameters(MyOpts opts) {
JCommander cmd = new JCommander(opts);
cmd.parse("-a", "anotherValue", "-a", "anotherValue2",
"-b", "anotherValue3", "-b", "anotherValue4");
Assert.assertEquals(opts.list.size(), 2);
Assert.assertEquals(opts.list.get(0), "anotherValue");
Assert.assertEquals(opts.list.get(1), "anotherValue2");
Assert.assertEquals(opts.set.size(), 2);
Iterator<String> arg2it = opts.set.iterator();
Assert.assertEquals(arg2it.next(), "anotherValue3");
Assert.assertEquals(arg2it.next(), "anotherValue4");
}
public static class MyOpts {
@Parameter(names = "-a")
public List<String> list;
@Parameter(names = "-b")
public Set<String> set;
}
public static final class MyOptsWithDefaultValues extends MyOpts {
public MyOptsWithDefaultValues(){
this.list = singletonList("defaultValue");
this.set = singletonSet("defaultValue");
}
}
public static final class MyOptsWithEmptyDefaults extends MyOpts {
public MyOptsWithEmptyDefaults(){
this.list = Lists.newArrayList();
this.set = Sets.newLinkedHashSet();
}
}
public static final List<String> singletonList(String value) {
List<String> list = Lists.newArrayList();
list.add(value);
return list;
}
public static final Set<String> singletonSet(String value){
Set<String> set = Sets.newLinkedHashSet();
set.add(value);
return set;
}
}
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