1 /* 2 * Copyright (C) 2013 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.inputmethod.latin; 18 19 import android.test.AndroidTestCase; 20 import android.test.suitebuilder.annotation.SmallTest; 21 22 import com.android.inputmethod.latin.utils.CoordinateUtils; 23 import com.android.inputmethod.latin.utils.StringUtils; 24 25 /** 26 * Unit tests for WordComposer. 27 */ 28 @SmallTest 29 public class WordComposerTests extends AndroidTestCase { testMoveCursor()30 public void testMoveCursor() { 31 final WordComposer wc = new WordComposer(); 32 // BMP is the Basic Multilingual Plane, as defined by Unicode. This includes 33 // most characters for most scripts, including all Roman alphabet languages, 34 // CJK, Arabic, Hebrew. Notable exceptions include some emoji and some 35 // very rare Chinese ideograms. BMP characters can be encoded on 2 bytes 36 // in UTF-16, whereas those outside the BMP need 4 bytes. 37 // http://en.wikipedia.org/wiki/Plane_(Unicode)#Basic_Multilingual_Plane 38 final String STR_WITHIN_BMP = "abcdef"; 39 final int[] CODEPOINTS_WITHIN_BMP = StringUtils.toCodePointArray(STR_WITHIN_BMP); 40 final int[] COORDINATES_WITHIN_BMP = 41 CoordinateUtils.newCoordinateArray(CODEPOINTS_WITHIN_BMP.length, 42 Constants.NOT_A_COORDINATE, Constants.NOT_A_COORDINATE); 43 wc.setComposingWord(CODEPOINTS_WITHIN_BMP, COORDINATES_WITHIN_BMP); 44 assertEquals(wc.size(), STR_WITHIN_BMP.codePointCount(0, STR_WITHIN_BMP.length())); 45 assertFalse(wc.isCursorFrontOrMiddleOfComposingWord()); 46 wc.setCursorPositionWithinWord(2); 47 assertTrue(wc.isCursorFrontOrMiddleOfComposingWord()); 48 // Move the cursor to after the 'd' 49 assertTrue(wc.moveCursorByAndReturnIfInsideComposingWord(2)); 50 assertTrue(wc.isCursorFrontOrMiddleOfComposingWord()); 51 // Move the cursor to after the 'e' 52 assertTrue(wc.moveCursorByAndReturnIfInsideComposingWord(1)); 53 assertTrue(wc.isCursorFrontOrMiddleOfComposingWord()); 54 assertEquals(wc.size(), 6); 55 // Move the cursor to after the 'f' 56 assertTrue(wc.moveCursorByAndReturnIfInsideComposingWord(1)); 57 assertFalse(wc.isCursorFrontOrMiddleOfComposingWord()); 58 // Move the cursor past the end of the word 59 assertFalse(wc.moveCursorByAndReturnIfInsideComposingWord(1)); 60 assertFalse(wc.moveCursorByAndReturnIfInsideComposingWord(15)); 61 // Do what LatinIME does when the cursor is moved outside of the word, 62 // and check the behavior is correct. 63 wc.reset(); 64 65 // \uD861\uDED7 is ��, a character outside the BMP 66 final String STR_WITH_SUPPLEMENTARY_CHAR = "abcde\uD861\uDED7fgh"; 67 final int[] CODEPOINTS_WITH_SUPPLEMENTARY_CHAR = 68 StringUtils.toCodePointArray(STR_WITH_SUPPLEMENTARY_CHAR); 69 final int[] COORDINATES_WITH_SUPPLEMENTARY_CHAR = 70 CoordinateUtils.newCoordinateArray(CODEPOINTS_WITH_SUPPLEMENTARY_CHAR.length, 71 Constants.NOT_A_COORDINATE, Constants.NOT_A_COORDINATE); 72 wc.setComposingWord(CODEPOINTS_WITH_SUPPLEMENTARY_CHAR, 73 COORDINATES_WITH_SUPPLEMENTARY_CHAR); 74 assertEquals(wc.size(), CODEPOINTS_WITH_SUPPLEMENTARY_CHAR.length); 75 assertFalse(wc.isCursorFrontOrMiddleOfComposingWord()); 76 wc.setCursorPositionWithinWord(3); 77 assertTrue(wc.isCursorFrontOrMiddleOfComposingWord()); 78 assertTrue(wc.moveCursorByAndReturnIfInsideComposingWord(6)); 79 assertTrue(wc.isCursorFrontOrMiddleOfComposingWord()); 80 assertTrue(wc.moveCursorByAndReturnIfInsideComposingWord(1)); 81 assertFalse(wc.isCursorFrontOrMiddleOfComposingWord()); 82 83 wc.setComposingWord(CODEPOINTS_WITH_SUPPLEMENTARY_CHAR, 84 COORDINATES_WITH_SUPPLEMENTARY_CHAR); 85 wc.setCursorPositionWithinWord(3); 86 assertTrue(wc.moveCursorByAndReturnIfInsideComposingWord(7)); 87 88 wc.setComposingWord(CODEPOINTS_WITH_SUPPLEMENTARY_CHAR, 89 COORDINATES_WITH_SUPPLEMENTARY_CHAR); 90 wc.setCursorPositionWithinWord(3); 91 assertTrue(wc.moveCursorByAndReturnIfInsideComposingWord(7)); 92 93 wc.setComposingWord(CODEPOINTS_WITH_SUPPLEMENTARY_CHAR, 94 COORDINATES_WITH_SUPPLEMENTARY_CHAR); 95 wc.setCursorPositionWithinWord(3); 96 assertTrue(wc.moveCursorByAndReturnIfInsideComposingWord(-3)); 97 assertFalse(wc.moveCursorByAndReturnIfInsideComposingWord(-1)); 98 99 100 wc.setComposingWord(CODEPOINTS_WITH_SUPPLEMENTARY_CHAR, 101 COORDINATES_WITH_SUPPLEMENTARY_CHAR); 102 wc.setCursorPositionWithinWord(3); 103 assertFalse(wc.moveCursorByAndReturnIfInsideComposingWord(-9)); 104 105 wc.setComposingWord(CODEPOINTS_WITH_SUPPLEMENTARY_CHAR, 106 COORDINATES_WITH_SUPPLEMENTARY_CHAR); 107 assertTrue(wc.moveCursorByAndReturnIfInsideComposingWord(-10)); 108 109 wc.setComposingWord(CODEPOINTS_WITH_SUPPLEMENTARY_CHAR, 110 COORDINATES_WITH_SUPPLEMENTARY_CHAR); 111 assertFalse(wc.moveCursorByAndReturnIfInsideComposingWord(-11)); 112 113 wc.setComposingWord(CODEPOINTS_WITH_SUPPLEMENTARY_CHAR, 114 COORDINATES_WITH_SUPPLEMENTARY_CHAR); 115 assertTrue(wc.moveCursorByAndReturnIfInsideComposingWord(0)); 116 117 wc.setComposingWord(CODEPOINTS_WITH_SUPPLEMENTARY_CHAR, 118 COORDINATES_WITH_SUPPLEMENTARY_CHAR); 119 wc.setCursorPositionWithinWord(2); 120 assertTrue(wc.moveCursorByAndReturnIfInsideComposingWord(0)); 121 } 122 } 123