1 /** 2 * Copyright (C) 2010 the original author or authors. 3 * See the notice.md file distributed with this work for additional 4 * information regarding copyright ownership. 5 * 6 * Licensed under the Apache License, Version 2.0 (the "License"); 7 * you may not use this file except in compliance with the License. 8 * You may obtain a copy of the License at 9 * 10 * http://www.apache.org/licenses/LICENSE-2.0 11 * 12 * Unless required by applicable law or agreed to in writing, software 13 * distributed under the License is distributed on an "AS IS" BASIS, 14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 15 * See the License for the specific language governing permissions and 16 * limitations under the License. 17 */ 18 19 package com.beust.jcommander; 20 21 import com.beust.jcommander.internal.Lists; 22 import com.beust.jcommander.internal.Sets; 23 import org.testng.Assert; 24 import org.testng.annotations.Test; 25 26 import java.util.Iterator; 27 import java.util.List; 28 import java.util.Set; 29 30 /** 31 * Test behaviour of default parameter values 32 * @author rodionmoiseev 33 */ 34 public class DefaultValueTest { 35 @Test 36 public void emptyDefaultValueForListParameterStaysEmptyIfNotAssignedOrIsSetOtherwise() { 37 MyOptsWithEmptyDefaults opts = new MyOptsWithEmptyDefaults(); 38 JCommander cmd = new JCommander(opts); 39 cmd.parse(new String[]{"-a", "anotherValue"}); 40 Assert.assertEquals(opts.list.size(), 1); 41 Assert.assertEquals(opts.list.get(0), "anotherValue"); 42 Assert.assertEquals(opts.set.size(), 0); 43 } 44 45 @Test 46 public void defaultValueForListParametersGetsOverwrittenWithSpecifiedValueOrStaysAsDefaultOtherwise() { 47 MyOptsWithDefaultValues opts = new MyOptsWithDefaultValues(); 48 JCommander cmd = new JCommander(opts); 49 cmd.parse(new String[]{"-a", "anotherValue"}); 50 Assert.assertEquals(opts.list.size(), 1); 51 Assert.assertEquals(opts.list.get(0), "anotherValue"); 52 Assert.assertEquals(opts.set.size(), 1); 53 Assert.assertEquals(opts.set.iterator().next(), "defaultValue"); 54 } 55 56 @Test 57 public void anyNumberOfValuesCanBeSetToListParameters_ForEmptyDefaults(){ 58 MyOptsWithEmptyDefaults opts = new MyOptsWithEmptyDefaults(); 59 testSettingMultipleValuesToListTypeParameters(opts); 60 } 61 62 @Test 63 public void anyNumberOfValuesCanBeSetToListParameters_ForNonEmptyDefaults(){ 64 MyOptsWithDefaultValues opts = new MyOptsWithDefaultValues(); 65 testSettingMultipleValuesToListTypeParameters(opts); 66 } 67 68 private void testSettingMultipleValuesToListTypeParameters(MyOpts opts) { 69 JCommander cmd = new JCommander(opts); 70 cmd.parse(new String[]{"-a", "anotherValue", "-a", "anotherValue2", 71 "-b", "anotherValue3", "-b", "anotherValue4"}); 72 Assert.assertEquals(opts.list.size(), 2); 73 Assert.assertEquals(opts.list.get(0), "anotherValue"); 74 Assert.assertEquals(opts.list.get(1), "anotherValue2"); 75 Assert.assertEquals(opts.set.size(), 2); 76 Iterator<String> arg2it = opts.set.iterator(); 77 Assert.assertEquals(arg2it.next(), "anotherValue3"); 78 Assert.assertEquals(arg2it.next(), "anotherValue4"); 79 } 80 81 public static class MyOpts { 82 @Parameter(names = "-a") 83 public List<String> list; 84 @Parameter(names = "-b") 85 public Set<String> set; 86 } 87 88 public static final class MyOptsWithDefaultValues extends MyOpts { 89 public MyOptsWithDefaultValues(){ 90 this.list = singletonList("defaultValue"); 91 this.set = singletonSet("defaultValue"); 92 } 93 } 94 95 public static final class MyOptsWithEmptyDefaults extends MyOpts { 96 public MyOptsWithEmptyDefaults(){ 97 this.list = Lists.newArrayList(); 98 this.set = Sets.newLinkedHashSet(); 99 } 100 } 101 102 public static final List<String> singletonList(String value) { 103 List<String> list = Lists.newArrayList(); 104 list.add(value); 105 return list; 106 } 107 108 public static final Set<String> singletonSet(String value){ 109 Set<String> set = Sets.newLinkedHashSet(); 110 set.add(value); 111 return set; 112 } 113 } 114
