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

1 /*
2  * Copyright (C) 2008 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.CollectionSize.ZERO;
20 
21 import com.google.common.annotations.GwtCompatible;
22 import com.google.common.collect.testing.features.CollectionSize;
23 import java.util.Arrays;
24 import org.junit.Ignore;
25 
26 /**
27  * A generic JUnit test which tests {@code toArray()} operations on a list. Can't be invoked
28  * directly; please see {@link com.google.common.collect.testing.ListTestSuiteBuilder}.
29  *
30  * @author Chris Povirk
31  */
32 @GwtCompatible
33 @Ignore // Affects only Android test runner, which respects JUnit 4 annotations on JUnit 3 tests.
34 public class ListToArrayTester<E> extends AbstractListTester<E> {
35   // CollectionToArrayTester tests everything except ordering.
36 
37   public void testToArray_noArg() {
38     Object[] actual = getList().toArray();
39     assertArrayEquals("toArray() order should match list", createOrderedArray(), actual);
40   }
41 
42   @CollectionSize.Require(absent = ZERO)
43   public void testToArray_tooSmall() {
44     Object[] actual = getList().toArray(new Object[0]);
45     assertArrayEquals("toArray(tooSmall) order should match list", createOrderedArray(), actual);
46   }
47 
48   public void testToArray_largeEnough() {
49     Object[] actual = getList().toArray(new Object[getNumElements()]);
50     assertArrayEquals("toArray(largeEnough) order should match list", createOrderedArray(), actual);
51   }
52 
53   private static void assertArrayEquals(String message, Object[] expected, Object[] actual) {
54     assertEquals(message, Arrays.asList(expected), Arrays.asList(actual));
55   }
56 }