1 /* 2 * Copyright (C) 2007 The Guava Authors 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.google.common.collect.testing.testers; 18 19 import static com.google.common.collect.testing.IteratorFeature.MODIFIABLE; 20 import static com.google.common.collect.testing.IteratorFeature.UNMODIFIABLE; 21 import static com.google.common.collect.testing.features.CollectionFeature.SUPPORTS_REMOVE; 22 import static com.google.common.collect.testing.features.ListFeature.SUPPORTS_ADD_WITH_INDEX; 23 import static com.google.common.collect.testing.features.ListFeature.SUPPORTS_SET; 24 import static com.google.common.collect.testing.testers.Platform.listListIteratorTesterNumIterations; 25 import static java.util.Collections.singleton; 26 27 import com.google.common.annotations.GwtCompatible; 28 import com.google.common.annotations.GwtIncompatible; 29 import com.google.common.collect.testing.Helpers; 30 import com.google.common.collect.testing.IteratorFeature; 31 import com.google.common.collect.testing.ListIteratorTester; 32 import com.google.common.collect.testing.features.CollectionFeature; 33 import com.google.common.collect.testing.features.ListFeature; 34 35 import java.lang.reflect.Method; 36 import java.util.List; 37 import java.util.ListIterator; 38 import java.util.Set; 39 import java.util.concurrent.CopyOnWriteArraySet; 40 41 /** 42 * A generic JUnit test which tests {@code listIterator} operations on a list. 43 * Can't be invoked directly; please see 44 * {@link com.google.common.collect.testing.ListTestSuiteBuilder}. 45 * 46 * @author Chris Povirk 47 * @author Kevin Bourrillion 48 */ 49 @GwtCompatible(emulated = true) 50 public class ListListIteratorTester<E> extends AbstractListTester<E> { 51 // TODO: switch to DerivedIteratorTestSuiteBuilder 52 53 @CollectionFeature.Require(absent = SUPPORTS_REMOVE) 54 @ListFeature.Require(absent = {SUPPORTS_SET, SUPPORTS_ADD_WITH_INDEX}) testListIterator_unmodifiable()55 public void testListIterator_unmodifiable() { 56 runListIteratorTest(UNMODIFIABLE); 57 } 58 59 /* 60 * For now, we don't cope with testing this when the list supports only some 61 * modification operations. 62 */ 63 @CollectionFeature.Require(SUPPORTS_REMOVE) 64 @ListFeature.Require({SUPPORTS_SET, SUPPORTS_ADD_WITH_INDEX}) testListIterator_fullyModifiable()65 public void testListIterator_fullyModifiable() { 66 runListIteratorTest(MODIFIABLE); 67 } 68 runListIteratorTest(Set<IteratorFeature> features)69 private void runListIteratorTest(Set<IteratorFeature> features) { 70 new ListIteratorTester<E>( 71 listListIteratorTesterNumIterations(), singleton(samples.e4), features, 72 Helpers.copyToList(getOrderedElements()), 0) { 73 { 74 // TODO: don't set this universally 75 stopTestingWhenAddThrowsException(); 76 } 77 78 @Override protected ListIterator<E> newTargetIterator() { 79 resetCollection(); 80 return getList().listIterator(); 81 } 82 83 @Override protected void verify(List<E> elements) { 84 expectContents(elements); 85 } 86 }.test(); 87 } 88 testListIterator_tooLow()89 public void testListIterator_tooLow() { 90 try { 91 getList().listIterator(-1); 92 fail(); 93 } catch (IndexOutOfBoundsException expected) { 94 } 95 } 96 testListIterator_tooHigh()97 public void testListIterator_tooHigh() { 98 try { 99 getList().listIterator(getNumElements() + 1); 100 fail(); 101 } catch (IndexOutOfBoundsException expected) { 102 } 103 } 104 testListIterator_atSize()105 public void testListIterator_atSize() { 106 getList().listIterator(getNumElements()); 107 // TODO: run the iterator through ListIteratorTester 108 } 109 110 /** 111 * Returns the {@link Method} instance for 112 * {@link #testListIterator_fullyModifiable()} so that tests of 113 * {@link CopyOnWriteArraySet} can suppress it with 114 * {@code FeatureSpecificTestSuiteBuilder.suppressing()} until <a 115 * href="http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6570575">Sun bug 116 * 6570575</a> is fixed. 117 */ 118 @GwtIncompatible("reflection") getListIteratorFullyModifiableMethod()119 public static Method getListIteratorFullyModifiableMethod() { 120 return Helpers.getMethod( 121 ListListIteratorTester.class, "testListIterator_fullyModifiable"); 122 } 123 124 /** 125 * Returns the {@link Method} instance for 126 * {@link #testListIterator_unmodifiable()} so that it can be suppressed in 127 * GWT tests. 128 */ 129 @GwtIncompatible("reflection") getListIteratorUnmodifiableMethod()130 public static Method getListIteratorUnmodifiableMethod() { 131 return Helpers.getMethod( 132 ListListIteratorTester.class, "testListIterator_unmodifiable"); 133 } 134 } 135