1/*
2 * Copyright (C) 2010 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.util;
18
19import com.android.quicksearchbox.ConsumerTrap;
20
21import android.test.suitebuilder.annotation.SmallTest;
22
23import junit.framework.TestCase;
24
25/**
26 * Tests for {@link CachedLater}.
27 */
28@SmallTest
29public class CachedLaterTest extends TestCase {
30
31    private Harness mHarness;
32    private ConsumerTrap<String> mTrap;
33    private ConsumerTrap<String> mTrap2;
34
35    @Override
36    protected void setUp() throws Exception {
37        super.setUp();
38        mHarness = new Harness();
39        mTrap = new ConsumerTrap<String>();
40        mTrap2 = new ConsumerTrap<String>();
41    }
42
43    public void testGetLaterAsync() {
44        mHarness.getLater(mTrap);
45        // The consumer should not have been called here
46        assertNull(mTrap.getValue());
47        mHarness.finishCreate("foo");
48        assertEquals("foo", mTrap.getValue());
49    }
50
51    public void testGetLaterSync() {
52        mHarness.getLater(mTrap);  // trigger create()
53        mHarness.finishCreate("foo");
54        mHarness.getLater(mTrap2);  // sync call
55        assertEquals("foo", mTrap2.getValue());
56    }
57
58    public void testGetLaterWhileCreating() {
59        mHarness.getLater(mTrap);  // trigger create()
60        mHarness.getLater(mTrap2);  // register a second consumer
61        mHarness.finishCreate("foo");
62        assertEquals("foo", mTrap.getValue());
63        assertEquals("foo", mTrap2.getValue());
64    }
65
66    public void testGetLaterAfterClear() {
67        mHarness.getLater(mTrap);  // trigger create()
68        mHarness.finishCreate("foo");
69        mHarness.clear();
70        mHarness.getLater(mTrap2);
71        mHarness.finishCreate("bar");
72        assertEquals("bar", mTrap2.getValue());
73    }
74
75    public void testHaveNow() {
76        assertFalse(mHarness.haveNow());
77        mHarness.getLater(mTrap);
78        assertFalse(mHarness.haveNow());
79        mHarness.finishCreate("foo");
80        assertTrue(mHarness.haveNow());
81    }
82
83    public void testClear() {
84        mHarness.getLater(mTrap);  // trigger create()
85        mHarness.finishCreate("foo");
86        mHarness.clear();
87        assertFalse(mHarness.haveNow());
88        mHarness.getLater(mTrap2);
89        assertNull(mTrap2.getValue());
90    }
91
92    private static class Harness extends CachedLater<String> {
93
94        private boolean mCreatePending = false;
95
96        protected void create() {
97            mCreatePending = true;
98        }
99
100        public void finishCreate(String str) {
101            if (mCreatePending) {
102                store(str);
103                mCreatePending = false;
104            }
105        }
106
107    }
108
109}
110