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.features.CollectionFeature.ALLOWS_NULL_VALUES; 020import static com.google.common.collect.testing.features.CollectionFeature.KNOWN_ORDER; 021import static com.google.common.collect.testing.features.CollectionFeature.SUPPORTS_ADD; 022import static com.google.common.collect.testing.features.CollectionFeature.SUPPORTS_REMOVE; 023import static com.google.common.collect.testing.features.CollectionSize.ZERO; 024 025import com.google.common.annotations.GwtCompatible; 026import com.google.common.annotations.GwtIncompatible; 027import com.google.common.annotations.J2ktIncompatible; 028import com.google.common.collect.testing.AbstractCollectionTester; 029import com.google.common.collect.testing.Helpers; 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 // Affects only Android test runner, which respects JUnit 4 annotations on JUnit 3 tests. 045public class CollectionSpliteratorTester<E> extends AbstractCollectionTester<E> { 046 047 @CollectionFeature.Require(absent = KNOWN_ORDER) 048 public void testSpliteratorUnknownOrder() { 049 synchronized (collection) { 050 SpliteratorTester.of(collection::spliterator).expect(getSampleElements()); 051 } 052 } 053 054 @CollectionFeature.Require(KNOWN_ORDER) 055 public void testSpliteratorKnownOrder() { 056 synchronized (collection) { 057 SpliteratorTester.of(collection::spliterator).expect(getOrderedElements()).inOrder(); 058 } 059 } 060 061 @CollectionFeature.Require(ALLOWS_NULL_VALUES) 062 @CollectionSize.Require(absent = ZERO) 063 public void testSpliteratorNullable() { 064 initCollectionWithNullElement(); 065 synchronized (collection) { // for Collections.synchronized 066 assertFalse(collection.spliterator().hasCharacteristics(Spliterator.NONNULL)); 067 } 068 } 069 070 @CollectionFeature.Require(SUPPORTS_ADD) 071 public void testSpliteratorNotImmutable_CollectionAllowsAdd() { 072 // If add is supported, verify that IMMUTABLE is not reported. 073 synchronized (collection) { // for Collections.synchronized 074 assertFalse(collection.spliterator().hasCharacteristics(Spliterator.IMMUTABLE)); 075 } 076 } 077 078 @CollectionFeature.Require(SUPPORTS_REMOVE) 079 public void testSpliteratorNotImmutable_CollectionAllowsRemove() { 080 // If remove is supported, verify that IMMUTABLE is not reported. 081 synchronized (collection) { // for Collections.synchronized 082 assertFalse(collection.spliterator().hasCharacteristics(Spliterator.IMMUTABLE)); 083 } 084 } 085 086 @J2ktIncompatible 087 @GwtIncompatible // reflection 088 public static Method getSpliteratorNotImmutableCollectionAllowsAddMethod() { 089 return Helpers.getMethod( 090 CollectionSpliteratorTester.class, "testSpliteratorNotImmutable_CollectionAllowsAdd"); 091 } 092 093 @J2ktIncompatible 094 @GwtIncompatible // reflection 095 public static Method getSpliteratorNotImmutableCollectionAllowsRemoveMethod() { 096 return Helpers.getMethod( 097 CollectionSpliteratorTester.class, "testSpliteratorNotImmutable_CollectionAllowsRemove"); 098 } 099}