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.features.CollectionSize.ZERO; 020 021import com.google.common.annotations.GwtCompatible; 022import com.google.common.collect.testing.AbstractMapTester; 023import com.google.common.collect.testing.features.CollectionSize; 024import org.junit.Ignore; 025 026/** 027 * A generic JUnit test which tests {@code isEmpty()} operations on a map. Can't be invoked 028 * directly; please see {@link com.google.common.collect.testing.MapTestSuiteBuilder}. 029 * 030 * @author Kevin Bourrillion 031 */ 032@GwtCompatible 033@Ignore // Affects only Android test runner, which respects JUnit 4 annotations on JUnit 3 tests. 034public class MapIsEmptyTester<K, V> extends AbstractMapTester<K, V> { 035 @CollectionSize.Require(ZERO) 036 public void testIsEmpty_yes() { 037 assertTrue("isEmpty() should return true", getMap().isEmpty()); 038 } 039 040 @CollectionSize.Require(absent = ZERO) 041 public void testIsEmpty_no() { 042 assertFalse("isEmpty() should return false", getMap().isEmpty()); 043 } 044}