1 /* 2 * Copyright (C) 2013 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.KNOWN_ORDER; 21 import static com.google.common.collect.testing.features.CollectionFeature.SUPPORTS_ADD; 22 import static com.google.common.collect.testing.features.CollectionFeature.SUPPORTS_REMOVE; 23 import static com.google.common.collect.testing.features.CollectionSize.ZERO; 24 25 import com.google.common.annotations.GwtCompatible; 26 import com.google.common.annotations.GwtIncompatible; 27 import com.google.common.collect.testing.AbstractCollectionTester; 28 import com.google.common.collect.testing.Helpers; 29 import com.google.common.collect.testing.SpliteratorTester; 30 import com.google.common.collect.testing.features.CollectionFeature; 31 import com.google.common.collect.testing.features.CollectionSize; 32 import java.lang.reflect.Method; 33 import java.util.Spliterator; 34 import org.junit.Ignore; 35 36 /** 37 * A generic JUnit test which tests {@code spliterator} operations on a collection. Can't be invoked 38 * directly; please see {@link com.google.common.collect.testing.CollectionTestSuiteBuilder}. 39 * 40 * @author Louis Wasserman 41 */ 42 @GwtCompatible(emulated = true) 43 @Ignore // Affects only Android test runner, which respects JUnit 4 annotations on JUnit 3 tests. 44 public class CollectionSpliteratorTester<E> extends AbstractCollectionTester<E> { 45 46 @CollectionFeature.Require(absent = KNOWN_ORDER) testSpliteratorUnknownOrder()47 public void testSpliteratorUnknownOrder() { 48 synchronized (collection) { 49 SpliteratorTester.of(collection::spliterator).expect(getSampleElements()); 50 } 51 } 52 53 @CollectionFeature.Require(KNOWN_ORDER) testSpliteratorKnownOrder()54 public void testSpliteratorKnownOrder() { 55 synchronized (collection) { 56 SpliteratorTester.of(collection::spliterator).expect(getOrderedElements()).inOrder(); 57 } 58 } 59 60 @CollectionFeature.Require(ALLOWS_NULL_VALUES) 61 @CollectionSize.Require(absent = ZERO) testSpliteratorNullable()62 public void testSpliteratorNullable() { 63 initCollectionWithNullElement(); 64 synchronized (collection) { // for Collections.synchronized 65 assertFalse(collection.spliterator().hasCharacteristics(Spliterator.NONNULL)); 66 } 67 } 68 69 @CollectionFeature.Require(SUPPORTS_ADD) testSpliteratorNotImmutable_CollectionAllowsAdd()70 public void testSpliteratorNotImmutable_CollectionAllowsAdd() { 71 // If add is supported, verify that IMMUTABLE is not reported. 72 synchronized (collection) { // for Collections.synchronized 73 assertFalse(collection.spliterator().hasCharacteristics(Spliterator.IMMUTABLE)); 74 } 75 } 76 77 @CollectionFeature.Require(SUPPORTS_REMOVE) testSpliteratorNotImmutable_CollectionAllowsRemove()78 public void testSpliteratorNotImmutable_CollectionAllowsRemove() { 79 // If remove is supported, verify that IMMUTABLE is not reported. 80 synchronized (collection) { // for Collections.synchronized 81 assertFalse(collection.spliterator().hasCharacteristics(Spliterator.IMMUTABLE)); 82 } 83 } 84 85 @GwtIncompatible // reflection getSpliteratorNotImmutableCollectionAllowsAddMethod()86 public static Method getSpliteratorNotImmutableCollectionAllowsAddMethod() { 87 return Helpers.getMethod( 88 CollectionSpliteratorTester.class, "testSpliteratorNotImmutable_CollectionAllowsAdd"); 89 } 90 91 @GwtIncompatible // reflection getSpliteratorNotImmutableCollectionAllowsRemoveMethod()92 public static Method getSpliteratorNotImmutableCollectionAllowsRemoveMethod() { 93 return Helpers.getMethod( 94 CollectionSpliteratorTester.class, "testSpliteratorNotImmutable_CollectionAllowsRemove"); 95 } 96 } 97