Coverage Summary for Class: CollectionToStringTester (com.google.common.collect.testing.testers)

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 import org.junit.Ignore;
32 
33 /**
34  * A generic JUnit test which tests {@code toString()} operations on a collection. Can't be invoked
35  * directly; please see {@link com.google.common.collect.testing.CollectionTestSuiteBuilder}.
36  *
37  * @author Kevin Bourrillion
38  */
39 @GwtCompatible
40 @Ignore // Affects only Android test runner, which respects JUnit 4 annotations on JUnit 3 tests.
41 public class CollectionToStringTester<E> extends AbstractCollectionTester<E> {
42   public void testToString_minimal() {
43     assertNotNull("toString() should not return null", collection.toString());
44   }
45 
46   @CollectionSize.Require(ZERO)
47   @CollectionFeature.Require(absent = NON_STANDARD_TOSTRING)
48   public void testToString_size0() {
49     assertEquals("emptyCollection.toString should return []", "[]", collection.toString());
50   }
51 
52   @CollectionSize.Require(ONE)
53   @CollectionFeature.Require(absent = NON_STANDARD_TOSTRING)
54   public void testToString_size1() {
55     assertEquals(
56         "size1Collection.toString should return [{element}]",
57         "[" + e0() + "]",
58         collection.toString());
59   }
60 
61   @CollectionSize.Require(SEVERAL)
62   @CollectionFeature.Require(value = KNOWN_ORDER, absent = NON_STANDARD_TOSTRING)
63   public void testToString_sizeSeveral() {
64     String expected = Helpers.copyToList(getOrderedElements()).toString();
65     assertEquals("collection.toString() incorrect", expected, collection.toString());
66   }
67 
68   @CollectionSize.Require(absent = ZERO)
69   @CollectionFeature.Require(ALLOWS_NULL_VALUES)
70   public void testToString_null() {
71     initCollectionWithNullElement();
72     testToString_minimal();
73   }
74 }