001/* 002 * Copyright (C) 2007 The Guava Authors 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * http://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 */ 016 017package com.google.common.collect.testing.testers; 018 019import static com.google.common.collect.testing.IteratorFeature.MODIFIABLE; 020import static com.google.common.collect.testing.IteratorFeature.UNMODIFIABLE; 021import static com.google.common.collect.testing.features.CollectionFeature.SUPPORTS_REMOVE; 022import static com.google.common.collect.testing.features.ListFeature.SUPPORTS_ADD_WITH_INDEX; 023import static com.google.common.collect.testing.features.ListFeature.SUPPORTS_SET; 024import static com.google.common.collect.testing.testers.Platform.listListIteratorTesterNumIterations; 025import static java.util.Collections.singleton; 026 027import com.google.common.annotations.GwtCompatible; 028import com.google.common.annotations.GwtIncompatible; 029import com.google.common.collect.testing.Helpers; 030import com.google.common.collect.testing.IteratorFeature; 031import com.google.common.collect.testing.ListIteratorTester; 032import com.google.common.collect.testing.features.CollectionFeature; 033import com.google.common.collect.testing.features.ListFeature; 034import java.lang.reflect.Method; 035import java.util.List; 036import java.util.ListIterator; 037import java.util.Set; 038import java.util.concurrent.CopyOnWriteArraySet; 039 040/** 041 * A generic JUnit test which tests {@code listIterator} operations on a list. Can't be invoked 042 * directly; please see {@link com.google.common.collect.testing.ListTestSuiteBuilder}. 043 * 044 * @author Chris Povirk 045 * @author Kevin Bourrillion 046 */ 047@GwtCompatible(emulated = true) 048public class ListListIteratorTester<E> extends AbstractListTester<E> { 049 @CollectionFeature.Require(absent = SUPPORTS_REMOVE) 050 @ListFeature.Require(absent = {SUPPORTS_SET, SUPPORTS_ADD_WITH_INDEX}) 051 public void testListIterator_unmodifiable() { 052 runListIteratorTest(UNMODIFIABLE); 053 } 054 055 /* 056 * For now, we don't cope with testing this when the list supports only some 057 * modification operations. 058 */ 059 @CollectionFeature.Require(SUPPORTS_REMOVE) 060 @ListFeature.Require({SUPPORTS_SET, SUPPORTS_ADD_WITH_INDEX}) 061 public void testListIterator_fullyModifiable() { 062 runListIteratorTest(MODIFIABLE); 063 } 064 065 private void runListIteratorTest(Set<IteratorFeature> features) { 066 new ListIteratorTester<E>( 067 listListIteratorTesterNumIterations(), 068 singleton(e4()), 069 features, 070 Helpers.copyToList(getOrderedElements()), 071 0) { 072 @Override 073 protected ListIterator<E> newTargetIterator() { 074 resetCollection(); 075 return getList().listIterator(); 076 } 077 078 @Override 079 protected void verify(List<E> elements) { 080 expectContents(elements); 081 } 082 }.test(); 083 } 084 085 public void testListIterator_tooLow() { 086 try { 087 getList().listIterator(-1); 088 fail(); 089 } catch (IndexOutOfBoundsException expected) { 090 } 091 } 092 093 public void testListIterator_tooHigh() { 094 try { 095 getList().listIterator(getNumElements() + 1); 096 fail(); 097 } catch (IndexOutOfBoundsException expected) { 098 } 099 } 100 101 public void testListIterator_atSize() { 102 getList().listIterator(getNumElements()); 103 // TODO: run the iterator through ListIteratorTester 104 } 105 106 /** 107 * Returns the {@link Method} instance for {@link #testListIterator_fullyModifiable()} so that 108 * tests of {@link CopyOnWriteArraySet} can suppress it with {@code 109 * FeatureSpecificTestSuiteBuilder.suppressing()} until <a 110 * href="http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6570575">Sun bug 6570575</a> is fixed. 111 */ 112 @GwtIncompatible // reflection 113 public static Method getListIteratorFullyModifiableMethod() { 114 return Helpers.getMethod(ListListIteratorTester.class, "testListIterator_fullyModifiable"); 115 } 116 117 /** 118 * Returns the {@link Method} instance for {@link #testListIterator_unmodifiable()} so that it can 119 * be suppressed in GWT tests. 120 */ 121 @GwtIncompatible // reflection 122 public static Method getListIteratorUnmodifiableMethod() { 123 return Helpers.getMethod(ListListIteratorTester.class, "testListIterator_unmodifiable"); 124 } 125}