| /* |
| * Copyright (C) 2008 The Guava Authors |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.google.common.collect.testing.testers; |
| |
| import static com.google.common.collect.testing.features.CollectionFeature.ALLOWS_NULL_VALUES; |
| |
| import com.google.common.annotations.GwtCompatible; |
| import com.google.common.collect.testing.Helpers; |
| import com.google.common.collect.testing.MinimalSet; |
| import com.google.common.collect.testing.features.CollectionFeature; |
| import com.google.common.collect.testing.features.CollectionSize; |
| import java.util.Collection; |
| import java.util.Set; |
| import org.junit.Ignore; |
| |
| /** |
| * Tests {@link java.util.Set#equals}. |
| * |
| * @author George van den Driessche |
| */ |
| @GwtCompatible |
| @Ignore // Affects only Android test runner, which respects JUnit 4 annotations on JUnit 3 tests. |
| public class SetEqualsTester<E> extends AbstractSetTester<E> { |
| public void testEquals_otherSetWithSameElements() { |
| assertTrue( |
| "A Set should equal any other Set containing the same elements.", |
| getSet().equals(MinimalSet.from(getSampleElements()))); |
| } |
| |
| @CollectionSize.Require(absent = CollectionSize.ZERO) |
| public void testEquals_otherSetWithDifferentElements() { |
| Collection<E> elements = getSampleElements(getNumElements() - 1); |
| elements.add(getSubjectGenerator().samples().e3()); |
| |
| assertFalse( |
| "A Set should not equal another Set containing different elements.", |
| getSet().equals(MinimalSet.from(elements))); |
| } |
| |
| @CollectionSize.Require(absent = CollectionSize.ZERO) |
| @CollectionFeature.Require(ALLOWS_NULL_VALUES) |
| public void testEquals_containingNull() { |
| Collection<E> elements = getSampleElements(getNumElements() - 1); |
| elements.add(null); |
| |
| collection = getSubjectGenerator().create(elements.toArray()); |
| assertTrue( |
| "A Set should equal any other Set containing the same elements," |
| + " even if some elements are null.", |
| getSet().equals(MinimalSet.from(elements))); |
| } |
| |
| @CollectionSize.Require(absent = CollectionSize.ZERO) |
| public void testEquals_otherContainsNull() { |
| Collection<E> elements = getSampleElements(getNumElements() - 1); |
| elements.add(null); |
| Set<E> other = MinimalSet.from(elements); |
| |
| assertFalse( |
| "Two Sets should not be equal if exactly one of them contains null.", |
| getSet().equals(other)); |
| } |
| |
| @CollectionSize.Require(absent = CollectionSize.ZERO) |
| public void testEquals_smallerSet() { |
| Collection<E> fewerElements = getSampleElements(getNumElements() - 1); |
| assertFalse( |
| "Sets of different sizes should not be equal.", |
| getSet().equals(MinimalSet.from(fewerElements))); |
| } |
| |
| public void testEquals_largerSet() { |
| Collection<E> moreElements = getSampleElements(getNumElements() + 1); |
| assertFalse( |
| "Sets of different sizes should not be equal.", |
| getSet().equals(MinimalSet.from(moreElements))); |
| } |
| |
| public void testEquals_list() { |
| assertFalse("A List should never equal a Set.", getSet().equals(Helpers.copyToList(getSet()))); |
| } |
| } |