| /* |
| * Copyright (C) 2007 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 static com.google.common.collect.testing.features.CollectionFeature.FAILS_FAST_ON_CONCURRENT_MODIFICATION; |
| import static com.google.common.collect.testing.features.CollectionFeature.RESTRICTS_ELEMENTS; |
| import static com.google.common.collect.testing.features.CollectionFeature.SUPPORTS_ADD; |
| 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.features.CollectionFeature; |
| import com.google.common.collect.testing.features.CollectionSize; |
| |
| import java.util.ConcurrentModificationException; |
| import java.util.Iterator; |
| |
| /** |
| * A generic JUnit test which tests {@code add} operations on a collection. |
| * Can't be invoked directly; please see |
| * {@link com.google.common.collect.testing.CollectionTestSuiteBuilder}. |
| * |
| * @author Chris Povirk |
| * @author Kevin Bourrillion |
| */ |
| @SuppressWarnings("unchecked") // too many "unchecked generic array creations" |
| @GwtCompatible(emulated = true) |
| public class CollectionAddTester<E> extends AbstractCollectionTester<E> { |
| @CollectionFeature.Require(SUPPORTS_ADD) |
| public void testAdd_supportedNotPresent() { |
| assertTrue("add(notPresent) should return true", |
| collection.add(samples.e3)); |
| expectAdded(samples.e3); |
| } |
| |
| @CollectionFeature.Require(absent = SUPPORTS_ADD) |
| public void testAdd_unsupportedNotPresent() { |
| try { |
| collection.add(samples.e3); |
| fail("add(notPresent) should throw"); |
| } catch (UnsupportedOperationException expected) { |
| } |
| expectUnchanged(); |
| expectMissing(samples.e3); |
| } |
| |
| @CollectionFeature.Require(absent = SUPPORTS_ADD) |
| @CollectionSize.Require(absent = ZERO) |
| public void testAdd_unsupportedPresent() { |
| try { |
| assertFalse("add(present) should return false or throw", |
| collection.add(samples.e0)); |
| } catch (UnsupportedOperationException tolerated) { |
| } |
| expectUnchanged(); |
| } |
| |
| @CollectionFeature.Require( |
| value = {SUPPORTS_ADD, ALLOWS_NULL_VALUES}, |
| absent = RESTRICTS_ELEMENTS) |
| public void testAdd_nullSupported() { |
| assertTrue("add(null) should return true", collection.add(null)); |
| expectAdded((E) null); |
| } |
| |
| @CollectionFeature.Require(value = SUPPORTS_ADD, |
| absent = ALLOWS_NULL_VALUES) |
| public void testAdd_nullUnsupported() { |
| try { |
| collection.add(null); |
| fail("add(null) should throw"); |
| } catch (NullPointerException expected) { |
| } |
| expectUnchanged(); |
| expectNullMissingWhenNullUnsupported( |
| "Should not contain null after unsupported add(null)"); |
| } |
| |
| @CollectionFeature.Require({SUPPORTS_ADD, |
| FAILS_FAST_ON_CONCURRENT_MODIFICATION}) |
| @CollectionSize.Require(absent = ZERO) |
| public void testAddConcurrentWithIteration() { |
| try { |
| Iterator<E> iterator = collection.iterator(); |
| assertTrue(collection.add(samples.e3)); |
| iterator.next(); |
| fail("Expected ConcurrentModificationException"); |
| } catch (ConcurrentModificationException expected) { |
| // success |
| } |
| } |
| } |
| |