| /* |
| * 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_QUERIES; |
| import static com.google.common.collect.testing.features.CollectionFeature.ALLOWS_NULL_VALUES; |
| import static com.google.common.collect.testing.features.CollectionFeature.FAILS_FAST_ON_CONCURRENT_MODIFICATION; |
| import static com.google.common.collect.testing.features.CollectionFeature.SUPPORTS_REMOVE; |
| import static com.google.common.collect.testing.features.CollectionSize.SEVERAL; |
| import static com.google.common.collect.testing.features.CollectionSize.ZERO; |
| |
| import com.google.common.annotations.GwtCompatible; |
| import com.google.common.collect.testing.AbstractCollectionTester; |
| import com.google.common.collect.testing.MinimalCollection; |
| import com.google.common.collect.testing.WrongType; |
| import com.google.common.collect.testing.features.CollectionFeature; |
| import com.google.common.collect.testing.features.CollectionSize; |
| import java.util.Collections; |
| import java.util.ConcurrentModificationException; |
| import java.util.Iterator; |
| import org.junit.Ignore; |
| |
| /** |
| * A generic JUnit test which tests {@code removeAll} operations on a collection. Can't be invoked |
| * directly; please see {@link com.google.common.collect.testing.CollectionTestSuiteBuilder}. |
| * |
| * @author George van den Driessche |
| * @author Chris Povirk |
| */ |
| @SuppressWarnings("unchecked") // too many "unchecked generic array creations" |
| @GwtCompatible |
| @Ignore // Affects only Android test runner, which respects JUnit 4 annotations on JUnit 3 tests. |
| public class CollectionRemoveAllTester<E> extends AbstractCollectionTester<E> { |
| @CollectionFeature.Require(SUPPORTS_REMOVE) |
| public void testRemoveAll_emptyCollection() { |
| assertFalse( |
| "removeAll(emptyCollection) should return false", |
| collection.removeAll(MinimalCollection.of())); |
| expectUnchanged(); |
| } |
| |
| @CollectionFeature.Require(SUPPORTS_REMOVE) |
| public void testRemoveAll_nonePresent() { |
| assertFalse( |
| "removeAll(disjointCollection) should return false", |
| collection.removeAll(MinimalCollection.of(e3()))); |
| expectUnchanged(); |
| } |
| |
| @CollectionFeature.Require(SUPPORTS_REMOVE) |
| @CollectionSize.Require(absent = ZERO) |
| public void testRemoveAll_allPresent() { |
| assertTrue( |
| "removeAll(intersectingCollection) should return true", |
| collection.removeAll(MinimalCollection.of(e0()))); |
| expectMissing(e0()); |
| } |
| |
| @CollectionFeature.Require(SUPPORTS_REMOVE) |
| @CollectionSize.Require(absent = ZERO) |
| public void testRemoveAll_somePresent() { |
| assertTrue( |
| "removeAll(intersectingCollection) should return true", |
| collection.removeAll(MinimalCollection.of(e0(), e3()))); |
| expectMissing(e0()); |
| } |
| |
| @CollectionFeature.Require({SUPPORTS_REMOVE, FAILS_FAST_ON_CONCURRENT_MODIFICATION}) |
| @CollectionSize.Require(SEVERAL) |
| public void testRemoveAllSomePresentConcurrentWithIteration() { |
| try { |
| Iterator<E> iterator = collection.iterator(); |
| assertTrue(collection.removeAll(MinimalCollection.of(e0(), e3()))); |
| iterator.next(); |
| fail("Expected ConcurrentModificationException"); |
| } catch (ConcurrentModificationException expected) { |
| // success |
| } |
| } |
| |
| /** Trigger the {@code other.size() >= this.size()} case in {@link AbstractSet#removeAll()}. */ |
| @CollectionFeature.Require(SUPPORTS_REMOVE) |
| @CollectionSize.Require(absent = ZERO) |
| public void testRemoveAll_somePresentLargeCollectionToRemove() { |
| assertTrue( |
| "removeAll(largeIntersectingCollection) should return true", |
| collection.removeAll(MinimalCollection.of(e0(), e0(), e0(), e3(), e3(), e3()))); |
| expectMissing(e0()); |
| } |
| |
| @CollectionFeature.Require(absent = SUPPORTS_REMOVE) |
| public void testRemoveAll_unsupportedEmptyCollection() { |
| try { |
| assertFalse( |
| "removeAll(emptyCollection) should return false or throw " |
| + "UnsupportedOperationException", |
| collection.removeAll(MinimalCollection.of())); |
| } catch (UnsupportedOperationException tolerated) { |
| } |
| expectUnchanged(); |
| } |
| |
| @CollectionFeature.Require(absent = SUPPORTS_REMOVE) |
| public void testRemoveAll_unsupportedNonePresent() { |
| try { |
| assertFalse( |
| "removeAll(disjointCollection) should return false or throw " |
| + "UnsupportedOperationException", |
| collection.removeAll(MinimalCollection.of(e3()))); |
| } catch (UnsupportedOperationException tolerated) { |
| } |
| expectUnchanged(); |
| } |
| |
| @CollectionFeature.Require(absent = SUPPORTS_REMOVE) |
| @CollectionSize.Require(absent = ZERO) |
| public void testRemoveAll_unsupportedPresent() { |
| try { |
| collection.removeAll(MinimalCollection.of(e0())); |
| fail("removeAll(intersectingCollection) should throw UnsupportedOperationException"); |
| } catch (UnsupportedOperationException expected) { |
| } |
| expectUnchanged(); |
| assertTrue(collection.contains(e0())); |
| } |
| |
| /* |
| * AbstractCollection fails the removeAll(null) test when the subject |
| * collection is empty, but we'd still like to test removeAll(null) when we |
| * can. We split the test into empty and non-empty cases. This allows us to |
| * suppress only the former. |
| */ |
| |
| @CollectionFeature.Require(SUPPORTS_REMOVE) |
| @CollectionSize.Require(ZERO) |
| public void testRemoveAll_nullCollectionReferenceEmptySubject() { |
| try { |
| collection.removeAll(null); |
| // Returning successfully is not ideal, but tolerated. |
| } catch (NullPointerException tolerated) { |
| } |
| } |
| |
| @CollectionFeature.Require(SUPPORTS_REMOVE) |
| @CollectionSize.Require(absent = ZERO) |
| public void testRemoveAll_nullCollectionReferenceNonEmptySubject() { |
| try { |
| collection.removeAll(null); |
| fail("removeAll(null) should throw NullPointerException"); |
| } catch (NullPointerException expected) { |
| } |
| } |
| |
| @CollectionFeature.Require(value = SUPPORTS_REMOVE, absent = ALLOWS_NULL_QUERIES) |
| public void testRemoveAll_containsNullNo() { |
| MinimalCollection<?> containsNull = MinimalCollection.of((Object) null); |
| try { |
| assertFalse( |
| "removeAll(containsNull) should return false or throw", |
| collection.removeAll(containsNull)); |
| } catch (NullPointerException tolerated) { |
| } |
| expectUnchanged(); |
| } |
| |
| @CollectionFeature.Require({SUPPORTS_REMOVE, ALLOWS_NULL_QUERIES}) |
| public void testRemoveAll_containsNullNoButAllowed() { |
| MinimalCollection<?> containsNull = MinimalCollection.of((Object) null); |
| assertFalse("removeAll(containsNull) should return false", collection.removeAll(containsNull)); |
| expectUnchanged(); |
| } |
| |
| @CollectionFeature.Require({SUPPORTS_REMOVE, ALLOWS_NULL_VALUES}) |
| @CollectionSize.Require(absent = ZERO) |
| public void testRemoveAll_containsNullYes() { |
| initCollectionWithNullElement(); |
| assertTrue( |
| "removeAll(containsNull) should return true", |
| collection.removeAll(Collections.singleton(null))); |
| // TODO: make this work with MinimalCollection |
| } |
| |
| @CollectionFeature.Require(SUPPORTS_REMOVE) |
| public void testRemoveAll_containsWrongType() { |
| try { |
| assertFalse( |
| "removeAll(containsWrongType) should return false or throw", |
| collection.removeAll(MinimalCollection.of(WrongType.VALUE))); |
| } catch (ClassCastException tolerated) { |
| } |
| expectUnchanged(); |
| } |
| } |