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.CollectionFeature.ALLOWS_NULL_VALUES;
20 import static com.google.common.collect.testing.features.CollectionSize.ZERO;
21
22 import com.google.common.annotations.GwtCompatible;
23 import com.google.common.annotations.GwtIncompatible;
24 import com.google.common.collect.testing.AbstractCollectionTester;
25 import com.google.common.collect.testing.Helpers;
26 import com.google.common.collect.testing.features.CollectionFeature;
27 import com.google.common.collect.testing.features.CollectionSize;
28 import java.lang.reflect.Method;
29 import org.junit.Ignore;
30
31 /**
32 * A generic JUnit test which tests creation (typically through a constructor or static factory
33 * method) of a collection. Can't be invoked directly; please see {@link
34 * com.google.common.collect.testing.CollectionTestSuiteBuilder}.
35 *
36 * @author Chris Povirk
37 */
38 @GwtCompatible(emulated = true)
39 @Ignore // Affects only Android test runner, which respects JUnit 4 annotations on JUnit 3 tests.
40 public class CollectionCreationTester<E> extends AbstractCollectionTester<E> {
41 @CollectionFeature.Require(ALLOWS_NULL_VALUES)
42 @CollectionSize.Require(absent = ZERO)
43 public void testCreateWithNull_supported() {
44 E[] array = createArrayWithNullElement();
45 collection = getSubjectGenerator().create(array);
46 expectContents(array);
47 }
48
49 @CollectionFeature.Require(absent = ALLOWS_NULL_VALUES)
50 @CollectionSize.Require(absent = ZERO)
51 public void testCreateWithNull_unsupported() {
52 E[] array = createArrayWithNullElement();
53
54 try {
55 getSubjectGenerator().create(array);
56 fail("Creating a collection containing null should fail");
57 } catch (NullPointerException expected) {
58 }
59 }
60
61 /**
62 * Returns the {@link Method} instance for {@link #testCreateWithNull_unsupported()} so that tests
63 * can suppress it with {@code FeatureSpecificTestSuiteBuilder.suppressing()} until <a
64 * href="http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=5045147">Sun bug 5045147</a> is fixed.
65 */
66 @GwtIncompatible // reflection
67 public static Method getCreateWithNullUnsupportedMethod() {
68 return Helpers.getMethod(CollectionCreationTester.class, "testCreateWithNull_unsupported");
69 }
70 }