1/*
2 *  Licensed to the Apache Software Foundation (ASF) under one or more
3 *  contributor license agreements.  See the NOTICE file distributed with
4 *  this work for additional information regarding copyright ownership.
5 *  The ASF licenses this file to You under the Apache License, Version 2.0
6 *  (the "License"); you may not use this file except in compliance with
7 *  the License.  You may obtain a copy of the License at
8 *
9 *     http://www.apache.org/licenses/LICENSE-2.0
10 *
11 *  Unless required by applicable law or agreed to in writing, software
12 *  distributed under the License is distributed on an "AS IS" BASIS,
13 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 *  See the License for the specific language governing permissions and
15 *  limitations under the License.
16 */
17
18package org.apache.harmony.tests.java.lang.ref;
19
20import java.lang.ref.ReferenceQueue;
21import java.lang.ref.WeakReference;
22
23public class WeakReferenceTest extends junit.framework.TestCase {
24    static Boolean bool;
25
26    protected void doneSuite() {
27        bool = null;
28    }
29
30    /**
31     * java.lang.ref.WeakReference#WeakReference(java.lang.Object,
32     *        java.lang.ref.ReferenceQueue)
33     */
34    public void test_ConstructorLjava_lang_ObjectLjava_lang_ref_ReferenceQueue() {
35        ReferenceQueue rq = new ReferenceQueue();
36        bool = new Boolean(true);
37        try {
38            // Allow the finalizer to run to potentially enqueue
39            WeakReference wr = new WeakReference(bool, rq);
40            assertTrue("Initialization failed.", ((Boolean) wr.get())
41                    .booleanValue());
42        } catch (Exception e) {
43            fail("Exception during test : " + e.getMessage());
44        }
45        // need a reference to bool so the jit does not optimize it away
46        assertTrue("should always pass", bool.booleanValue());
47
48        boolean exception = false;
49        try {
50            new WeakReference(bool, null);
51        } catch (NullPointerException e) {
52            exception = true;
53        }
54        assertTrue("Should not throw NullPointerException", !exception);
55    }
56
57    /**
58     * java.lang.ref.WeakReference#WeakReference(java.lang.Object)
59     */
60    public void test_ConstructorLjava_lang_Object() {
61        bool = new Boolean(true);
62        try {
63            WeakReference wr = new WeakReference(bool);
64            // Allow the finalizer to run to potentially enqueue
65            Thread.sleep(1000);
66            assertTrue("Initialization failed.", ((Boolean) wr.get())
67                    .booleanValue());
68        } catch (Exception e) {
69            fail("Exception during test : " + e.getMessage());
70        }
71        // need a reference to bool so the jit does not optimize it away
72        assertTrue("should always pass", bool.booleanValue());
73    }
74
75    protected void setUp() {
76    }
77
78    protected void tearDown() {
79    }
80}
81