1/* 2 * Copyright (C) 2013 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 17package com.google.common.collect.testing.google; 18 19import static com.google.common.collect.testing.features.CollectionFeature.ALLOWS_NULL_QUERIES; 20import static com.google.common.collect.testing.features.CollectionFeature.ALLOWS_NULL_VALUES; 21import static com.google.common.collect.testing.features.CollectionSize.SEVERAL; 22import static com.google.common.collect.testing.features.CollectionSize.ZERO; 23 24import com.google.common.annotations.GwtCompatible; 25import com.google.common.collect.testing.WrongType; 26import com.google.common.collect.testing.features.CollectionFeature; 27import com.google.common.collect.testing.features.CollectionSize; 28 29/** 30 * Tests for {@code Multiset#count}. 31 * 32 * @author Jared Levy 33 */ 34@GwtCompatible(emulated = true) 35public class MultisetCountTester<E> extends AbstractMultisetTester<E> { 36 37 public void testCount_0() { 38 assertEquals("multiset.count(missing) didn't return 0", 39 0, getMultiset().count(samples.e3)); 40 } 41 42 @CollectionSize.Require(absent = ZERO) 43 public void testCount_1() { 44 assertEquals("multiset.count(present) didn't return 1", 45 1, getMultiset().count(samples.e0)); 46 } 47 48 @CollectionSize.Require(SEVERAL) 49 public void testCount_3() { 50 initThreeCopies(); 51 assertEquals("multiset.count(thriceContained) didn't return 3", 52 3, getMultiset().count(samples.e0)); 53 } 54 55 @CollectionFeature.Require(ALLOWS_NULL_QUERIES) 56 public void testCount_nullAbsent() { 57 assertEquals("multiset.count(null) didn't return 0", 58 0, getMultiset().count(null)); 59 } 60 61 @CollectionFeature.Require(absent = ALLOWS_NULL_QUERIES) 62 public void testCount_null_forbidden() { 63 try { 64 getMultiset().count(null); 65 fail("Expected NullPointerException"); 66 } catch (NullPointerException expected) {} 67 } 68 69 @CollectionSize.Require(absent = ZERO) 70 @CollectionFeature.Require(ALLOWS_NULL_VALUES) 71 public void testCount_nullPresent() { 72 initCollectionWithNullElement(); 73 assertEquals(1, getMultiset().count(null)); 74 } 75 76 public void testCount_wrongType() { 77 assertEquals("multiset.count(wrongType) didn't return 0", 78 0, getMultiset().count(WrongType.VALUE)); 79 } 80} 81 82