001/* 002 * Copyright (C) 2008 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.CollectionSize.ZERO; 021 022import com.google.common.annotations.GwtCompatible; 023import com.google.common.annotations.GwtIncompatible; 024import com.google.common.collect.testing.AbstractCollectionTester; 025import com.google.common.collect.testing.Helpers; 026import com.google.common.collect.testing.features.CollectionFeature; 027import com.google.common.collect.testing.features.CollectionSize; 028import java.lang.reflect.Method; 029import org.junit.Ignore; 030 031/** 032 * A generic JUnit test which tests creation (typically through a constructor or static factory 033 * method) of a collection. Can't be invoked directly; please see {@link 034 * com.google.common.collect.testing.CollectionTestSuiteBuilder}. 035 * 036 * @author Chris Povirk 037 */ 038@GwtCompatible(emulated = true) 039@Ignore // Affects only Android test runner, which respects JUnit 4 annotations on JUnit 3 tests. 040public class CollectionCreationTester<E> extends AbstractCollectionTester<E> { 041 @CollectionFeature.Require(ALLOWS_NULL_VALUES) 042 @CollectionSize.Require(absent = ZERO) 043 public void testCreateWithNull_supported() { 044 E[] array = createArrayWithNullElement(); 045 collection = getSubjectGenerator().create(array); 046 expectContents(array); 047 } 048 049 @CollectionFeature.Require(absent = ALLOWS_NULL_VALUES) 050 @CollectionSize.Require(absent = ZERO) 051 public void testCreateWithNull_unsupported() { 052 E[] array = createArrayWithNullElement(); 053 054 try { 055 getSubjectGenerator().create(array); 056 fail("Creating a collection containing null should fail"); 057 } catch (NullPointerException expected) { 058 } 059 } 060 061 /** 062 * Returns the {@link Method} instance for {@link #testCreateWithNull_unsupported()} so that tests 063 * can suppress it with {@code FeatureSpecificTestSuiteBuilder.suppressing()} until <a 064 * href="http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=5045147">Sun bug 5045147</a> is fixed. 065 */ 066 @GwtIncompatible // reflection 067 public static Method getCreateWithNullUnsupportedMethod() { 068 return Helpers.getMethod(CollectionCreationTester.class, "testCreateWithNull_unsupported"); 069 } 070}