1 /* 2 * Copyright (C) 2007 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.NON_STANDARD_TOSTRING; 22 import static com.google.common.collect.testing.features.CollectionSize.ONE; 23 import static com.google.common.collect.testing.features.CollectionSize.SEVERAL; 24 import static com.google.common.collect.testing.features.CollectionSize.ZERO; 25 26 import com.google.common.annotations.GwtCompatible; 27 import com.google.common.collect.testing.AbstractCollectionTester; 28 import com.google.common.collect.testing.Helpers; 29 import com.google.common.collect.testing.features.CollectionFeature; 30 import com.google.common.collect.testing.features.CollectionSize; 31 32 /** 33 * A generic JUnit test which tests {@code toString()} operations on a 34 * collection. Can't be invoked directly; please see 35 * {@link com.google.common.collect.testing.CollectionTestSuiteBuilder}. 36 * 37 * @author Kevin Bourrillion 38 */ 39 @GwtCompatible 40 public class CollectionToStringTester<E> extends AbstractCollectionTester<E> { testToString_minimal()41 public void testToString_minimal() { 42 assertNotNull("toString() should not return null", 43 collection.toString()); 44 } 45 46 @CollectionSize.Require(ZERO) 47 @CollectionFeature.Require(absent = NON_STANDARD_TOSTRING) testToString_size0()48 public void testToString_size0() { 49 assertEquals("emptyCollection.toString should return []", "[]", 50 collection.toString()); 51 } 52 53 @CollectionSize.Require(ONE) 54 @CollectionFeature.Require(absent = NON_STANDARD_TOSTRING) testToString_size1()55 public void testToString_size1() { 56 assertEquals("size1Collection.toString should return [{element}]", 57 "[" + samples.e0 + "]", collection.toString()); 58 } 59 60 @CollectionSize.Require(SEVERAL) 61 @CollectionFeature.Require( 62 value = KNOWN_ORDER, absent = NON_STANDARD_TOSTRING) testToString_sizeSeveral()63 public void testToString_sizeSeveral() { 64 String expected = Helpers.copyToList(getOrderedElements()).toString(); 65 assertEquals("collection.toString() incorrect", 66 expected, collection.toString()); 67 } 68 69 @CollectionSize.Require(absent = ZERO) 70 @CollectionFeature.Require(ALLOWS_NULL_VALUES) testToString_null()71 public void testToString_null() { 72 initCollectionWithNullElement(); 73 testToString_minimal(); 74 } 75 } 76