134 lines
6.2 KiB
Java
134 lines
6.2 KiB
Java
/*
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* Copyright (C) 2013 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.inputmethod.latin;
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import static org.junit.Assert.assertEquals;
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import static org.junit.Assert.assertFalse;
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import static org.junit.Assert.assertTrue;
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import androidx.test.filters.SmallTest;
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import androidx.test.runner.AndroidJUnit4;
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import com.android.inputmethod.latin.common.Constants;
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import com.android.inputmethod.latin.common.CoordinateUtils;
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import com.android.inputmethod.latin.common.StringUtils;
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import org.junit.Test;
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import org.junit.runner.RunWith;
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/**
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* Unit tests for WordComposer.
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*/
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@SmallTest
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@RunWith(AndroidJUnit4.class)
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public class WordComposerTests {
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@Test
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public void testMoveCursor() {
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final WordComposer wc = new WordComposer();
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// BMP is the Basic Multilingual Plane, as defined by Unicode. This includes
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// most characters for most scripts, including all Roman alphabet languages,
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// CJK, Arabic, Hebrew. Notable exceptions include some emoji and some
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// very rare Chinese ideograms. BMP characters can be encoded on 2 bytes
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// in UTF-16, whereas those outside the BMP need 4 bytes.
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// http://en.wikipedia.org/wiki/Plane_(Unicode)#Basic_Multilingual_Plane
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final String STR_WITHIN_BMP = "abcdef";
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final int[] CODEPOINTS_WITHIN_BMP = StringUtils.toCodePointArray(STR_WITHIN_BMP);
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final int[] COORDINATES_WITHIN_BMP =
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CoordinateUtils.newCoordinateArray(CODEPOINTS_WITHIN_BMP.length,
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Constants.NOT_A_COORDINATE, Constants.NOT_A_COORDINATE);
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wc.setComposingWord(CODEPOINTS_WITHIN_BMP, COORDINATES_WITHIN_BMP);
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assertEquals(wc.size(), STR_WITHIN_BMP.codePointCount(0, STR_WITHIN_BMP.length()));
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assertFalse(wc.isCursorFrontOrMiddleOfComposingWord());
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wc.setCursorPositionWithinWord(2);
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assertTrue(wc.isCursorFrontOrMiddleOfComposingWord());
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// Move the cursor to after the 'd'
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assertTrue(wc.moveCursorByAndReturnIfInsideComposingWord(2));
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assertTrue(wc.isCursorFrontOrMiddleOfComposingWord());
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// Move the cursor to after the 'e'
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assertTrue(wc.moveCursorByAndReturnIfInsideComposingWord(1));
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assertTrue(wc.isCursorFrontOrMiddleOfComposingWord());
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assertEquals(wc.size(), 6);
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// Move the cursor to after the 'f'
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assertTrue(wc.moveCursorByAndReturnIfInsideComposingWord(1));
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assertFalse(wc.isCursorFrontOrMiddleOfComposingWord());
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// Move the cursor past the end of the word
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assertFalse(wc.moveCursorByAndReturnIfInsideComposingWord(1));
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assertFalse(wc.moveCursorByAndReturnIfInsideComposingWord(15));
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// Do what LatinIME does when the cursor is moved outside of the word,
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// and check the behavior is correct.
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wc.reset();
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// \uD861\uDED7 is 𨛗, a character outside the BMP
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final String STR_WITH_SUPPLEMENTARY_CHAR = "abcde\uD861\uDED7fgh";
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final int[] CODEPOINTS_WITH_SUPPLEMENTARY_CHAR =
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StringUtils.toCodePointArray(STR_WITH_SUPPLEMENTARY_CHAR);
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final int[] COORDINATES_WITH_SUPPLEMENTARY_CHAR =
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CoordinateUtils.newCoordinateArray(CODEPOINTS_WITH_SUPPLEMENTARY_CHAR.length,
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Constants.NOT_A_COORDINATE, Constants.NOT_A_COORDINATE);
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wc.setComposingWord(CODEPOINTS_WITH_SUPPLEMENTARY_CHAR,
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COORDINATES_WITH_SUPPLEMENTARY_CHAR);
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assertEquals(wc.size(), CODEPOINTS_WITH_SUPPLEMENTARY_CHAR.length);
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assertFalse(wc.isCursorFrontOrMiddleOfComposingWord());
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wc.setCursorPositionWithinWord(3);
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assertTrue(wc.isCursorFrontOrMiddleOfComposingWord());
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assertTrue(wc.moveCursorByAndReturnIfInsideComposingWord(6));
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assertTrue(wc.isCursorFrontOrMiddleOfComposingWord());
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assertTrue(wc.moveCursorByAndReturnIfInsideComposingWord(1));
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assertFalse(wc.isCursorFrontOrMiddleOfComposingWord());
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wc.setComposingWord(CODEPOINTS_WITH_SUPPLEMENTARY_CHAR,
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COORDINATES_WITH_SUPPLEMENTARY_CHAR);
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wc.setCursorPositionWithinWord(3);
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assertTrue(wc.moveCursorByAndReturnIfInsideComposingWord(7));
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wc.setComposingWord(CODEPOINTS_WITH_SUPPLEMENTARY_CHAR,
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COORDINATES_WITH_SUPPLEMENTARY_CHAR);
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wc.setCursorPositionWithinWord(3);
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assertTrue(wc.moveCursorByAndReturnIfInsideComposingWord(7));
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wc.setComposingWord(CODEPOINTS_WITH_SUPPLEMENTARY_CHAR,
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COORDINATES_WITH_SUPPLEMENTARY_CHAR);
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wc.setCursorPositionWithinWord(3);
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assertTrue(wc.moveCursorByAndReturnIfInsideComposingWord(-3));
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assertFalse(wc.moveCursorByAndReturnIfInsideComposingWord(-1));
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wc.setComposingWord(CODEPOINTS_WITH_SUPPLEMENTARY_CHAR,
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COORDINATES_WITH_SUPPLEMENTARY_CHAR);
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wc.setCursorPositionWithinWord(3);
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assertFalse(wc.moveCursorByAndReturnIfInsideComposingWord(-9));
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wc.setComposingWord(CODEPOINTS_WITH_SUPPLEMENTARY_CHAR,
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COORDINATES_WITH_SUPPLEMENTARY_CHAR);
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assertTrue(wc.moveCursorByAndReturnIfInsideComposingWord(-10));
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wc.setComposingWord(CODEPOINTS_WITH_SUPPLEMENTARY_CHAR,
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COORDINATES_WITH_SUPPLEMENTARY_CHAR);
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assertFalse(wc.moveCursorByAndReturnIfInsideComposingWord(-11));
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wc.setComposingWord(CODEPOINTS_WITH_SUPPLEMENTARY_CHAR,
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COORDINATES_WITH_SUPPLEMENTARY_CHAR);
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assertTrue(wc.moveCursorByAndReturnIfInsideComposingWord(0));
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wc.setComposingWord(CODEPOINTS_WITH_SUPPLEMENTARY_CHAR,
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COORDINATES_WITH_SUPPLEMENTARY_CHAR);
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wc.setCursorPositionWithinWord(2);
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assertTrue(wc.moveCursorByAndReturnIfInsideComposingWord(0));
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}
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}
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