001/* 002 * Copyright (C) 2007 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.NON_STANDARD_TOSTRING; 022import static com.google.common.collect.testing.features.CollectionSize.ONE; 023import static com.google.common.collect.testing.features.CollectionSize.SEVERAL; 024import static com.google.common.collect.testing.features.CollectionSize.ZERO; 025 026import com.google.common.annotations.GwtCompatible; 027import com.google.common.collect.testing.AbstractCollectionTester; 028import com.google.common.collect.testing.Helpers; 029import com.google.common.collect.testing.features.CollectionFeature; 030import com.google.common.collect.testing.features.CollectionSize; 031import org.junit.Ignore; 032 033/** 034 * A generic JUnit test which tests {@code toString()} operations on a collection. Can't be invoked 035 * directly; please see {@link com.google.common.collect.testing.CollectionTestSuiteBuilder}. 036 * 037 * @author Kevin Bourrillion 038 */ 039@GwtCompatible 040@Ignore // Affects only Android test runner, which respects JUnit 4 annotations on JUnit 3 tests. 041public class CollectionToStringTester<E> extends AbstractCollectionTester<E> { 042 public void testToString_minimal() { 043 assertNotNull("toString() should not return null", collection.toString()); 044 } 045 046 @CollectionSize.Require(ZERO) 047 @CollectionFeature.Require(absent = NON_STANDARD_TOSTRING) 048 public void testToString_size0() { 049 assertEquals("emptyCollection.toString should return []", "[]", collection.toString()); 050 } 051 052 @CollectionSize.Require(ONE) 053 @CollectionFeature.Require(absent = NON_STANDARD_TOSTRING) 054 public void testToString_size1() { 055 assertEquals( 056 "size1Collection.toString should return [{element}]", 057 "[" + e0() + "]", 058 collection.toString()); 059 } 060 061 @CollectionSize.Require(SEVERAL) 062 @CollectionFeature.Require(value = KNOWN_ORDER, absent = NON_STANDARD_TOSTRING) 063 public void testToString_sizeSeveral() { 064 String expected = Helpers.copyToList(getOrderedElements()).toString(); 065 assertEquals("collection.toString() incorrect", expected, collection.toString()); 066 } 067 068 @CollectionSize.Require(absent = ZERO) 069 @CollectionFeature.Require(ALLOWS_NULL_VALUES) 070 public void testToString_null() { 071 initCollectionWithNullElement(); 072 testToString_minimal(); 073 } 074}