FormatUtilsTests.java revision 950a56825eee4b3f8c775e483a0bca1c0278d136 
1/*
2 * Copyright (C) 2011 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.contacts.format;
18
19import android.database.CharArrayBuffer;
20import android.test.AndroidTestCase;
21import android.test.suitebuilder.annotation.SmallTest;
22
23/**
24 * Test cases for format utility methods.
25 */
26@SmallTest
27public class FormatUtilsTests extends AndroidTestCase {
28
29    public void testOverlapPoint() throws Exception {
30        assertEquals(2, FormatUtils.overlapPoint("abcde", "cdefg"));
31        assertEquals(-1, FormatUtils.overlapPoint("John Doe", "John Doe"));
32        assertEquals(5, FormatUtils.overlapPoint("John Doe", "Doe, John"));
33        assertEquals(-1, FormatUtils.overlapPoint("Mr. John Doe", "Mr. Doe, John"));
34        assertEquals(13, FormatUtils.overlapPoint("John Herbert Doe", "Doe, John Herbert"));
35    }
36
37    public void testCopyToCharArrayBuffer() {
38        CharArrayBuffer charArrayBuffer = new CharArrayBuffer(20);
39        checkCopyToCharArrayBuffer(charArrayBuffer, null, 0);
40        checkCopyToCharArrayBuffer(charArrayBuffer, "", 0);
41        checkCopyToCharArrayBuffer(charArrayBuffer, "test", 4);
42        // Check that it works after copying something into it.
43        checkCopyToCharArrayBuffer(charArrayBuffer, "", 0);
44        checkCopyToCharArrayBuffer(charArrayBuffer, "test", 4);
45        checkCopyToCharArrayBuffer(charArrayBuffer, null, 0);
46        // This requires a resize of the actual buffer.
47        checkCopyToCharArrayBuffer(charArrayBuffer, "test test test test test", 24);
48    }
49
50    public void testCharArrayBufferToString() {
51        checkCharArrayBufferToString("");
52        checkCharArrayBufferToString("test");
53        checkCharArrayBufferToString("test test test test test");
54    }
55
56    /** Checks that copying a string into a {@link CharArrayBuffer} and back works correctly. */
57    private void checkCharArrayBufferToString(String text) {
58        CharArrayBuffer buffer = new CharArrayBuffer(20);
59        FormatUtils.copyToCharArrayBuffer(text, buffer);
60        assertEquals(text, FormatUtils.charArrayBufferToString(buffer));
61    }
62
63    /**
64     * Checks that copying into the char array buffer copies the values correctly.
65     */
66    private void checkCopyToCharArrayBuffer(CharArrayBuffer buffer, String value, int length) {
67        FormatUtils.copyToCharArrayBuffer(value, buffer);
68        assertEquals(length, buffer.sizeCopied);
69        for (int index = 0; index < length; ++index) {
70            assertEquals(value.charAt(index), buffer.data[index]);
71        }
72    }
73
74    public void testIndexOfWordPrefix_NullPrefix() {
75        assertEquals(-1, FormatUtils.indexOfWordPrefix("test", null));
76    }
77
78    public void testIndexOfWordPrefix_NullText() {
79        assertEquals(-1, FormatUtils.indexOfWordPrefix(null, "TE".toCharArray()));
80    }
81
82    public void testIndexOfWordPrefix_MatchingPrefix() {
83        checkIndexOfWordPrefix("test", "TE", 0);
84        checkIndexOfWordPrefix("Test", "TE", 0);
85        checkIndexOfWordPrefix("TEst", "TE", 0);
86        checkIndexOfWordPrefix("TEST", "TE", 0);
87        checkIndexOfWordPrefix("a test", "TE", 2);
88        checkIndexOfWordPrefix("test test", "TE", 0);
89        checkIndexOfWordPrefix("a test test", "TE", 2);
90    }
91
92    public void testIndexOfWordPrefix_NotMatchingPrefix() {
93        checkIndexOfWordPrefix("test", "TA", -1);
94        checkIndexOfWordPrefix("test type theme", "TA", -1);
95        checkIndexOfWordPrefix("atest retest pretest", "TEST", -1);
96        checkIndexOfWordPrefix("tes", "TEST", -1);
97    }
98
99    public void testIndexOfWordPrefix_LowerCase() {
100        // The prefix match only works if the prefix is un upper case.
101        checkIndexOfWordPrefix("test", "te", -1);
102    }
103
104    /**
105     * Checks that getting the index of a word prefix in the given text returns the expected index.
106     *
107     * @param text the text in which to look for the word
108     * @param wordPrefix the word prefix to look for
109     * @param expectedIndex the expected value to be returned by the function
110     */
111    private void checkIndexOfWordPrefix(String text, String wordPrefix, int expectedIndex) {
112        assertEquals(expectedIndex, FormatUtils.indexOfWordPrefix(text, wordPrefix.toCharArray()));
113    }
114}
115