001/* 002 * Copyright (C) 2009 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.google; 018 019import static com.google.common.collect.testing.features.CollectionFeature.SUPPORTS_ADD; 020import static com.google.common.collect.testing.features.CollectionSize.SEVERAL; 021import static com.google.common.collect.testing.features.CollectionSize.ZERO; 022import static java.util.Collections.nCopies; 023 024import com.google.common.annotations.GwtCompatible; 025import com.google.common.collect.testing.features.CollectionFeature; 026import com.google.common.collect.testing.features.CollectionSize; 027import org.junit.Ignore; 028 029/** 030 * A generic JUnit test which tests conditional {@code setCount()} operations on a multiset. Can't 031 * be invoked directly; please see {@link MultisetTestSuiteBuilder}. 032 * 033 * @author Chris Povirk 034 */ 035@GwtCompatible 036@Ignore // Affects only Android test runner, which respects JUnit 4 annotations on JUnit 3 tests. 037public class MultisetSetCountConditionallyTester<E> extends AbstractMultisetSetCountTester<E> { 038 @Override 039 void setCountCheckReturnValue(E element, int count) { 040 assertTrue( 041 "setCount() with the correct expected present count should return true", 042 setCount(element, count)); 043 } 044 045 @Override 046 void setCountNoCheckReturnValue(E element, int count) { 047 setCount(element, count); 048 } 049 050 private boolean setCount(E element, int count) { 051 return getMultiset().setCount(element, getMultiset().count(element), count); 052 } 053 054 private void assertSetCountNegativeOldCount() { 055 try { 056 getMultiset().setCount(e3(), -1, 1); 057 fail("calling setCount() with a negative oldCount should throw IllegalArgumentException"); 058 } catch (IllegalArgumentException expected) { 059 } 060 } 061 062 // Negative oldCount. 063 064 @CollectionFeature.Require(SUPPORTS_ADD) 065 public void testSetCountConditional_negativeOldCount_addSupported() { 066 assertSetCountNegativeOldCount(); 067 } 068 069 @CollectionFeature.Require(absent = SUPPORTS_ADD) 070 public void testSetCountConditional_negativeOldCount_addUnsupported() { 071 try { 072 assertSetCountNegativeOldCount(); 073 } catch (UnsupportedOperationException tolerated) { 074 } 075 } 076 077 // Incorrect expected present count. 078 079 @CollectionFeature.Require(SUPPORTS_ADD) 080 public void testSetCountConditional_oldCountTooLarge() { 081 assertFalse( 082 "setCount() with a too-large oldCount should return false", 083 getMultiset().setCount(e0(), 2, 3)); 084 expectUnchanged(); 085 } 086 087 @CollectionSize.Require(absent = ZERO) 088 @CollectionFeature.Require(SUPPORTS_ADD) 089 public void testSetCountConditional_oldCountTooSmallZero() { 090 assertFalse( 091 "setCount() with a too-small oldCount should return false", 092 getMultiset().setCount(e0(), 0, 2)); 093 expectUnchanged(); 094 } 095 096 @CollectionSize.Require(SEVERAL) 097 @CollectionFeature.Require(SUPPORTS_ADD) 098 public void testSetCountConditional_oldCountTooSmallNonzero() { 099 initThreeCopies(); 100 assertFalse( 101 "setCount() with a too-small oldCount should return false", 102 getMultiset().setCount(e0(), 1, 5)); 103 expectContents(nCopies(3, e0())); 104 } 105 106 /* 107 * TODO: test that unmodifiable multisets either throw UOE or return false 108 * when both are valid options. Currently we test the UOE cases and the 109 * return-false cases but not their intersection 110 */ 111}