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.CollectionSize.ZERO; 020 021import com.google.common.annotations.GwtCompatible; 022import com.google.common.collect.testing.features.CollectionSize; 023import java.util.Arrays; 024import org.junit.Ignore; 025 026/** 027 * A generic JUnit test which tests {@code toArray()} operations on a list. Can't be invoked 028 * directly; please see {@link com.google.common.collect.testing.ListTestSuiteBuilder}. 029 * 030 * @author Chris Povirk 031 */ 032@GwtCompatible 033@Ignore // Affects only Android test runner, which respects JUnit 4 annotations on JUnit 3 tests. 034public class ListToArrayTester<E> extends AbstractListTester<E> { 035 // CollectionToArrayTester tests everything except ordering. 036 037 public void testToArray_noArg() { 038 Object[] actual = getList().toArray(); 039 assertArrayEquals("toArray() order should match list", createOrderedArray(), actual); 040 } 041 042 @CollectionSize.Require(absent = ZERO) 043 public void testToArray_tooSmall() { 044 Object[] actual = getList().toArray(new Object[0]); 045 assertArrayEquals("toArray(tooSmall) order should match list", createOrderedArray(), actual); 046 } 047 048 public void testToArray_largeEnough() { 049 Object[] actual = getList().toArray(new Object[getNumElements()]); 050 assertArrayEquals("toArray(largeEnough) order should match list", createOrderedArray(), actual); 051 } 052 053 private static void assertArrayEquals(String message, Object[] expected, Object[] actual) { 054 assertEquals(message, Arrays.asList(expected), Arrays.asList(actual)); 055 } 056}