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; 039import org.junit.Ignore; 040 041/** 042 * A generic JUnit test which tests {@code listIterator} operations on a list. Can't be invoked 043 * directly; please see {@link com.google.common.collect.testing.ListTestSuiteBuilder}. 044 * 045 * @author Chris Povirk 046 * @author Kevin Bourrillion 047 */ 048@GwtCompatible(emulated = true) 049@Ignore // Affects only Android test runner, which respects JUnit 4 annotations on JUnit 3 tests. 050public class ListListIteratorTester<E> extends AbstractListTester<E> { 051 @CollectionFeature.Require(absent = SUPPORTS_REMOVE) 052 @ListFeature.Require(absent = {SUPPORTS_SET, SUPPORTS_ADD_WITH_INDEX}) 053 public void testListIterator_unmodifiable() { 054 runListIteratorTest(UNMODIFIABLE); 055 } 056 057 /* 058 * For now, we don't cope with testing this when the list supports only some 059 * modification operations. 060 */ 061 @CollectionFeature.Require(SUPPORTS_REMOVE) 062 @ListFeature.Require({SUPPORTS_SET, SUPPORTS_ADD_WITH_INDEX}) 063 public void testListIterator_fullyModifiable() { 064 runListIteratorTest(MODIFIABLE); 065 } 066 067 private void runListIteratorTest(Set<IteratorFeature> features) { 068 new ListIteratorTester<E>( 069 listListIteratorTesterNumIterations(), 070 singleton(e4()), 071 features, 072 Helpers.copyToList(getOrderedElements()), 073 0) { 074 @Override 075 protected ListIterator<E> newTargetIterator() { 076 resetCollection(); 077 return getList().listIterator(); 078 } 079 080 @Override 081 protected void verify(List<E> elements) { 082 expectContents(elements); 083 } 084 }.test(); 085 } 086 087 public void testListIterator_tooLow() { 088 try { 089 getList().listIterator(-1); 090 fail(); 091 } catch (IndexOutOfBoundsException expected) { 092 } 093 } 094 095 public void testListIterator_tooHigh() { 096 try { 097 getList().listIterator(getNumElements() + 1); 098 fail(); 099 } catch (IndexOutOfBoundsException expected) { 100 } 101 } 102 103 public void testListIterator_atSize() { 104 getList().listIterator(getNumElements()); 105 // TODO: run the iterator through ListIteratorTester 106 } 107 108 /** 109 * Returns the {@link Method} instance for {@link #testListIterator_fullyModifiable()} so that 110 * tests of {@link CopyOnWriteArraySet} can suppress it with {@code 111 * FeatureSpecificTestSuiteBuilder.suppressing()} until <a 112 * href="http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6570575">Sun bug 6570575</a> is fixed. 113 */ 114 @GwtIncompatible // reflection 115 public static Method getListIteratorFullyModifiableMethod() { 116 return Helpers.getMethod(ListListIteratorTester.class, "testListIterator_fullyModifiable"); 117 } 118 119 /** 120 * Returns the {@link Method} instance for {@link #testListIterator_unmodifiable()} so that it can 121 * be suppressed in GWT tests. 122 */ 123 @GwtIncompatible // reflection 124 public static Method getListIteratorUnmodifiableMethod() { 125 return Helpers.getMethod(ListListIteratorTester.class, "testListIterator_unmodifiable"); 126 } 127}