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      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 
     17 package com.android.contacts.format;
     18 
     19 import android.database.CharArrayBuffer;
     20 import android.test.AndroidTestCase;
     21 import android.test.suitebuilder.annotation.SmallTest;
     22 
     23 /**
     24  * Test cases for format utility methods.
     25  */
     26 @SmallTest
     27 public 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