| /* |
| * Copyright (C) 2010 The Guava Authors |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.google.common.util.concurrent; |
| |
| import com.google.common.testing.NullPointerTester; |
| |
| import junit.framework.TestCase; |
| |
| import java.util.concurrent.atomic.AtomicReferenceArray; |
| |
| /** |
| * Unit test for {@link Atomics}. |
| * |
| * @author Kurt Alfred Kluever |
| */ |
| public class AtomicsTest extends TestCase { |
| |
| private static final Object OBJECT = new Object(); |
| |
| public void testNewReference() throws Exception { |
| assertEquals(null, Atomics.newReference().get()); |
| } |
| |
| public void testNewReference_withInitialValue() throws Exception { |
| assertEquals(null, Atomics.newReference(null).get()); |
| assertEquals(OBJECT, Atomics.newReference(OBJECT).get()); |
| } |
| |
| public void testNewReferenceArray_withLength() throws Exception { |
| int length = 42; |
| AtomicReferenceArray<String> refArray = Atomics.newReferenceArray(length); |
| for (int i = 0; i < length; ++i) { |
| assertEquals(null, refArray.get(i)); |
| } |
| try { |
| refArray.get(length); |
| fail(); |
| } catch (IndexOutOfBoundsException expected) { |
| } |
| } |
| |
| public void testNewReferenceArray_withNegativeLength() throws Exception { |
| try { |
| Atomics.newReferenceArray(-1); |
| fail(); |
| } catch (NegativeArraySizeException expected) { |
| } |
| } |
| |
| public void testNewReferenceArray_withStringArray() throws Exception { |
| String[] array = {"foo", "bar", "baz"}; |
| AtomicReferenceArray<String> refArray = Atomics.newReferenceArray(array); |
| for (int i = 0; i < array.length; ++i) { |
| assertEquals(array[i], refArray.get(i)); |
| } |
| try { |
| refArray.get(array.length); |
| fail(); |
| } catch (IndexOutOfBoundsException expected) { |
| } |
| } |
| |
| public void testNewReferenceArray_withNullArray() throws Exception { |
| try { |
| Atomics.newReferenceArray(null); |
| fail(); |
| } catch (NullPointerException expected) { |
| } |
| } |
| |
| public void testNullPointers() { |
| NullPointerTester tester = new NullPointerTester(); |
| tester.testAllPublicConstructors(Atomics.class); // there aren't any |
| tester.testAllPublicStaticMethods(Atomics.class); |
| } |
| } |