1 /* 2 * Copyright (C) 2007 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 17 package com.google.common.collect.testing.testers; 18 19 import static com.google.common.collect.testing.features.CollectionFeature.ALLOWS_NULL_VALUES; 20 import static com.google.common.collect.testing.features.CollectionFeature.SUPPORTS_ADD; 21 import static com.google.common.collect.testing.features.CollectionSize.ZERO; 22 23 import com.google.common.annotations.GwtCompatible; 24 import com.google.common.annotations.GwtIncompatible; 25 import com.google.common.collect.testing.Helpers; 26 import com.google.common.collect.testing.features.CollectionFeature; 27 import com.google.common.collect.testing.features.CollectionSize; 28 import java.lang.reflect.Method; 29 import org.junit.Ignore; 30 31 /** 32 * A generic JUnit test which tests add operations on a set. Can't be invoked directly; please see 33 * {@link com.google.common.collect.testing.SetTestSuiteBuilder}. 34 * 35 * @author Kevin Bourrillion 36 */ 37 @GwtCompatible(emulated = true) 38 @Ignore // Affects only Android test runner, which respects JUnit 4 annotations on JUnit 3 tests. 39 public class SetAddTester<E> extends AbstractSetTester<E> { 40 @CollectionFeature.Require(SUPPORTS_ADD) 41 @CollectionSize.Require(absent = ZERO) testAdd_supportedPresent()42 public void testAdd_supportedPresent() { 43 assertFalse("add(present) should return false", getSet().add(e0())); 44 expectUnchanged(); 45 } 46 47 @CollectionFeature.Require(value = {SUPPORTS_ADD, ALLOWS_NULL_VALUES}) 48 @CollectionSize.Require(absent = ZERO) testAdd_supportedNullPresent()49 public void testAdd_supportedNullPresent() { 50 E[] array = createArrayWithNullElement(); 51 collection = getSubjectGenerator().create(array); 52 assertFalse("add(nullPresent) should return false", getSet().add(null)); 53 expectContents(array); 54 } 55 56 /** 57 * Returns the {@link Method} instance for {@link #testAdd_supportedNullPresent()} so that tests 58 * can suppress it. See {@link CollectionAddTester#getAddNullSupportedMethod()} for details. 59 */ 60 @GwtIncompatible // reflection getAddSupportedNullPresentMethod()61 public static Method getAddSupportedNullPresentMethod() { 62 return Helpers.getMethod(SetAddTester.class, "testAdd_supportedNullPresent"); 63 } 64 } 65