67 lines
3.2 KiB
Java
67 lines
3.2 KiB
Java
/*
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* Copyright (C) 2014 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 com.android.inputmethod.latin.NgramContext.WordInfo;
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import android.test.AndroidTestCase;
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import android.test.suitebuilder.annotation.SmallTest;
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@SmallTest
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public class NgramContextTests extends AndroidTestCase {
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public void testConstruct() {
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assertEquals(new NgramContext(new WordInfo("a")), new NgramContext(new WordInfo("a")));
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assertEquals(new NgramContext(WordInfo.BEGINNING_OF_SENTENCE),
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new NgramContext(WordInfo.BEGINNING_OF_SENTENCE));
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assertEquals(new NgramContext(WordInfo.EMPTY_WORD_INFO),
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new NgramContext(WordInfo.EMPTY_WORD_INFO));
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assertEquals(new NgramContext(WordInfo.EMPTY_WORD_INFO),
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new NgramContext(WordInfo.EMPTY_WORD_INFO));
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}
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public void testIsBeginningOfSentenceContext() {
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assertFalse(new NgramContext().isBeginningOfSentenceContext());
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assertTrue(new NgramContext(WordInfo.BEGINNING_OF_SENTENCE)
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.isBeginningOfSentenceContext());
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assertTrue(NgramContext.BEGINNING_OF_SENTENCE.isBeginningOfSentenceContext());
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assertFalse(new NgramContext(new WordInfo("a")).isBeginningOfSentenceContext());
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assertFalse(new NgramContext(new WordInfo("")).isBeginningOfSentenceContext());
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assertFalse(new NgramContext(WordInfo.EMPTY_WORD_INFO).isBeginningOfSentenceContext());
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assertTrue(new NgramContext(WordInfo.BEGINNING_OF_SENTENCE, new WordInfo("a"))
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.isBeginningOfSentenceContext());
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assertFalse(new NgramContext(new WordInfo("a"), WordInfo.BEGINNING_OF_SENTENCE)
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.isBeginningOfSentenceContext());
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assertFalse(new NgramContext(WordInfo.EMPTY_WORD_INFO, WordInfo.BEGINNING_OF_SENTENCE)
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.isBeginningOfSentenceContext());
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}
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public void testGetNextNgramContext() {
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final NgramContext ngramContext_a = new NgramContext(new WordInfo("a"));
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final NgramContext ngramContext_b_a =
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ngramContext_a.getNextNgramContext(new WordInfo("b"));
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assertEquals("b", ngramContext_b_a.getNthPrevWord(1));
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assertEquals("a", ngramContext_b_a.getNthPrevWord(2));
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final NgramContext ngramContext_bos_b =
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ngramContext_b_a.getNextNgramContext(WordInfo.BEGINNING_OF_SENTENCE);
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assertTrue(ngramContext_bos_b.isBeginningOfSentenceContext());
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assertEquals("b", ngramContext_bos_b.getNthPrevWord(2));
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final NgramContext ngramContext_c_bos =
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ngramContext_b_a.getNextNgramContext(new WordInfo("c"));
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assertEquals("c", ngramContext_c_bos.getNthPrevWord(1));
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}
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}
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