1/*
2 * Copyright (C) 2009 The Android Open Source Project
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
17package com.android.quicksearchbox;
18
19import com.android.quicksearchbox.util.Consumer;
20import com.android.quicksearchbox.util.NowOrLater;
21
22import android.test.AndroidTestCase;
23
24/**
25 * Base class for tests for {@link IconLoader} subclasses.
26 *
27 */
28public abstract class IconLoaderTest extends AndroidTestCase {
29
30    protected IconLoader mLoader;
31
32    @Override
33    protected void setUp() throws Exception {
34        mLoader = create();
35    }
36
37    protected abstract IconLoader create() throws Exception;
38
39    public void testGetIcon() {
40        assertNull(mLoader.getIcon(null));
41        assertNull(mLoader.getIcon(""));
42        assertNull(mLoader.getIcon("0"));
43        assertNotNull(mLoader.getIcon(String.valueOf(android.R.drawable.star_on)));
44    }
45
46    public void assertNull(NowOrLater<?> value) {
47        if (value.haveNow()) {
48            assertNull(value.getNow());
49        } else {
50            AssertConsumer<Object> consumer = new AssertConsumer<Object>();
51            value.getLater(consumer);
52            consumer.assertNull();
53        }
54    }
55
56    public void assertNotNull(NowOrLater<?> value) {
57        if (value.haveNow()) {
58            assertNotNull(value.getNow());
59        } else {
60            AssertConsumer<Object> consumer = new AssertConsumer<Object>();
61            value.getLater(consumer);
62            consumer.assertNotNull();
63        }
64    }
65
66    protected static class AssertConsumer<C> implements Consumer<C> {
67        private boolean mConsumed = false;
68        private Object mValue;
69        public boolean consume(Object value) {
70            synchronized(this) {
71                mConsumed = true;
72                mValue = value;
73                this.notifyAll();
74            }
75            return true;
76        }
77        public synchronized Object waitFor() {
78            if (!mConsumed) {
79                try {
80                    this.wait();
81                } catch (InterruptedException e) {
82                }
83            }
84            return mValue;
85        }
86        public void assertNull() {
87            IconLoaderTest.assertNull(waitFor());
88        }
89        public void assertNotNull() {
90            IconLoaderTest.assertNotNull(waitFor());
91        }
92        public AssertConsumer<C> reset() {
93            mConsumed = false;
94            mValue = null;
95            return this;
96        }
97    }
98
99}
100