001/* 002 * Copyright (C) 2013 The Guava Authors 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * http://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 */ 016 017package com.google.common.collect.testing.testers; 018 019import static com.google.common.collect.testing.Helpers.getMethod; 020import static com.google.common.collect.testing.features.CollectionFeature.ALLOWS_NULL_VALUES; 021import static com.google.common.collect.testing.features.CollectionFeature.KNOWN_ORDER; 022import static com.google.common.collect.testing.features.CollectionFeature.SUPPORTS_ADD; 023import static com.google.common.collect.testing.features.CollectionFeature.SUPPORTS_REMOVE; 024import static com.google.common.collect.testing.features.CollectionSize.ZERO; 025 026import com.google.common.annotations.GwtCompatible; 027import com.google.common.annotations.GwtIncompatible; 028import com.google.common.annotations.J2ktIncompatible; 029import com.google.common.collect.testing.AbstractCollectionTester; 030import com.google.common.collect.testing.SpliteratorTester; 031import com.google.common.collect.testing.features.CollectionFeature; 032import com.google.common.collect.testing.features.CollectionSize; 033import java.lang.reflect.Method; 034import java.util.Spliterator; 035import org.junit.Ignore; 036 037/** 038 * A generic JUnit test which tests {@code spliterator} operations on a collection. Can't be invoked 039 * directly; please see {@link com.google.common.collect.testing.CollectionTestSuiteBuilder}. 040 * 041 * @author Louis Wasserman 042 */ 043@GwtCompatible(emulated = true) 044@Ignore("test runners must not instantiate and run this directly, only via suites we build") 045// @Ignore affects the Android test runner, which respects JUnit 4 annotations on JUnit 3 tests. 046@SuppressWarnings("JUnit4ClassUsedInJUnit3") 047public class CollectionSpliteratorTester<E> extends AbstractCollectionTester<E> { 048 049 @CollectionFeature.Require(absent = KNOWN_ORDER) 050 public void testSpliteratorUnknownOrder() { 051 SpliteratorTester.of(collection::spliterator).expect(getSampleElements()); 052 } 053 054 @CollectionFeature.Require(KNOWN_ORDER) 055 public void testSpliteratorKnownOrder() { 056 SpliteratorTester.of(collection::spliterator).expect(getOrderedElements()).inOrder(); 057 } 058 059 @CollectionFeature.Require(ALLOWS_NULL_VALUES) 060 @CollectionSize.Require(absent = ZERO) 061 public void testSpliteratorNullable() { 062 initCollectionWithNullElement(); 063 assertFalse(collection.spliterator().hasCharacteristics(Spliterator.NONNULL)); 064 } 065 066 @CollectionFeature.Require(SUPPORTS_ADD) 067 public void testSpliteratorNotImmutable_collectionAllowsAdd() { 068 // If add is supported, verify that IMMUTABLE is not reported. 069 assertFalse(collection.spliterator().hasCharacteristics(Spliterator.IMMUTABLE)); 070 } 071 072 @CollectionFeature.Require(SUPPORTS_REMOVE) 073 public void testSpliteratorNotImmutable_collectionAllowsRemove() { 074 // If remove is supported, verify that IMMUTABLE is not reported. 075 assertFalse(collection.spliterator().hasCharacteristics(Spliterator.IMMUTABLE)); 076 } 077 078 @J2ktIncompatible 079 @GwtIncompatible // reflection 080 public static Method getSpliteratorNotImmutableCollectionAllowsAddMethod() { 081 return getMethod( 082 CollectionSpliteratorTester.class, "testSpliteratorNotImmutable_collectionAllowsAdd"); 083 } 084 085 @J2ktIncompatible 086 @GwtIncompatible // reflection 087 public static Method getSpliteratorNotImmutableCollectionAllowsRemoveMethod() { 088 return getMethod( 089 CollectionSpliteratorTester.class, "testSpliteratorNotImmutable_collectionAllowsRemove"); 090 } 091}