/* * Copyright (C) 2013 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.android.inputmethod.latin; import android.test.AndroidTestCase; import android.test.suitebuilder.annotation.LargeTest; import com.android.inputmethod.latin.makedict.CodePointUtils; import com.android.inputmethod.latin.makedict.DictEncoder; import com.android.inputmethod.latin.makedict.FormatSpec; import com.android.inputmethod.latin.makedict.FusionDictionary; import com.android.inputmethod.latin.makedict.FusionDictionary.PtNodeArray; import com.android.inputmethod.latin.makedict.UnsupportedFormatException; import com.android.inputmethod.latin.makedict.Ver3DictEncoder; import java.io.File; import java.io.IOException; import java.util.HashMap; import java.util.Locale; import java.util.Random; @LargeTest public class BinaryDictionaryTests extends AndroidTestCase { private static final FormatSpec.FormatOptions FORMAT_OPTIONS = new FormatSpec.FormatOptions(3 /* version */, true /* supportsDynamicUpdate */); private static final String TEST_DICT_FILE_EXTENSION = ".testDict"; private static final String TEST_LOCALE = "test"; @Override protected void setUp() throws Exception { super.setUp(); } @Override protected void tearDown() throws Exception { super.tearDown(); } private File createEmptyDictionaryAndGetFile(final String filename) throws IOException, UnsupportedFormatException { final FusionDictionary dict = new FusionDictionary(new PtNodeArray(), new FusionDictionary.DictionaryOptions(new HashMap(), false, false)); final File file = File.createTempFile(filename, TEST_DICT_FILE_EXTENSION, getContext().getCacheDir()); final DictEncoder dictEncoder = new Ver3DictEncoder(file); dictEncoder.writeDictionary(dict, FORMAT_OPTIONS); return file; } public void testIsValidDictionary() { File dictFile = null; try { dictFile = createEmptyDictionaryAndGetFile("TestBinaryDictionary"); } catch (IOException e) { fail("IOException while writing an initial dictionary : " + e); } catch (UnsupportedFormatException e) { fail("UnsupportedFormatException while writing an initial dictionary : " + e); } BinaryDictionary binaryDictionary = new BinaryDictionary(dictFile.getAbsolutePath(), 0 /* offset */, dictFile.length(), true /* useFullEditDistance */, Locale.getDefault(), TEST_LOCALE, true /* isUpdatable */); assertTrue("binaryDictionary must be valid for existing valid dictionary file.", binaryDictionary.isValidDictionary()); binaryDictionary.close(); assertFalse("binaryDictionary must be invalid after closing.", binaryDictionary.isValidDictionary()); dictFile.delete(); binaryDictionary = new BinaryDictionary(dictFile.getAbsolutePath(), 0 /* offset */, dictFile.length(), true /* useFullEditDistance */, Locale.getDefault(), TEST_LOCALE, true /* isUpdatable */); assertFalse("binaryDictionary must be invalid for not existing dictionary file.", binaryDictionary.isValidDictionary()); binaryDictionary.close(); } public void testAddUnigramWord() { File dictFile = null; try { dictFile = createEmptyDictionaryAndGetFile("TestBinaryDictionary"); } catch (IOException e) { fail("IOException while writing an initial dictionary : " + e); } catch (UnsupportedFormatException e) { fail("UnsupportedFormatException while writing an initial dictionary : " + e); } BinaryDictionary binaryDictionary = new BinaryDictionary(dictFile.getAbsolutePath(), 0 /* offset */, dictFile.length(), true /* useFullEditDistance */, Locale.getDefault(), TEST_LOCALE, true /* isUpdatable */); final int probability = 100; binaryDictionary.addUnigramWord("aaa", probability); // Reallocate and create. binaryDictionary.addUnigramWord("aab", probability); // Insert into children. binaryDictionary.addUnigramWord("aac", probability); // Make terminal. binaryDictionary.addUnigramWord("aa", probability); // Create children. binaryDictionary.addUnigramWord("aaaa", probability); // Reallocate and make termianl. binaryDictionary.addUnigramWord("a", probability); final int updatedProbability = 200; // Update. binaryDictionary.addUnigramWord("aaa", updatedProbability); assertEquals(probability, binaryDictionary.getFrequency("aab")); assertEquals(probability, binaryDictionary.getFrequency("aac")); assertEquals(probability, binaryDictionary.getFrequency("aa")); assertEquals(probability, binaryDictionary.getFrequency("aaaa")); assertEquals(probability, binaryDictionary.getFrequency("a")); assertEquals(updatedProbability, binaryDictionary.getFrequency("aaa")); dictFile.delete(); } public void testRandomlyAddUnigramWord() { final int wordCount = 1000; final int codePointSetSize = 50; final int seed = 123456789; File dictFile = null; try { dictFile = createEmptyDictionaryAndGetFile("TestBinaryDictionary"); } catch (IOException e) { fail("IOException while writing an initial dictionary : " + e); } catch (UnsupportedFormatException e) { fail("UnsupportedFormatException while writing an initial dictionary : " + e); } BinaryDictionary binaryDictionary = new BinaryDictionary(dictFile.getAbsolutePath(), 0 /* offset */, dictFile.length(), true /* useFullEditDistance */, Locale.getDefault(), TEST_LOCALE, true /* isUpdatable */); final HashMap probabilityMap = new HashMap(); // Test a word that isn't contained within the dictionary. final Random random = new Random(seed); final int[] codePointSet = CodePointUtils.generateCodePointSet(codePointSetSize, random); for (int i = 0; i < wordCount; ++i) { final String word = CodePointUtils.generateWord(random, codePointSet); probabilityMap.put(word, random.nextInt() & 0xFF); } for (String word : probabilityMap.keySet()) { binaryDictionary.addUnigramWord(word, probabilityMap.get(word)); } for (String word : probabilityMap.keySet()) { assertEquals(word, (int)probabilityMap.get(word), binaryDictionary.getFrequency(word)); } dictFile.delete(); } public void testAddBigramWords() { // TODO: Add a test to check the frequency of the bigram score which uses current value // calculated in the native code File dictFile = null; try { dictFile = createEmptyDictionaryAndGetFile("TestBinaryDictionary"); } catch (IOException e) { fail("IOException while writing an initial dictionary : " + e); } catch (UnsupportedFormatException e) { fail("UnsupportedFormatException while writing an initial dictionary : " + e); } BinaryDictionary binaryDictionary = new BinaryDictionary(dictFile.getAbsolutePath(), 0 /* offset */, dictFile.length(), true /* useFullEditDistance */, Locale.getDefault(), TEST_LOCALE, true /* isUpdatable */); final int unigramProbability = 100; final int bigramProbability = 10; binaryDictionary.addUnigramWord("aaa", unigramProbability); binaryDictionary.addUnigramWord("abb", unigramProbability); binaryDictionary.addUnigramWord("bcc", unigramProbability); binaryDictionary.addBigramWords("aaa", "abb", bigramProbability); binaryDictionary.addBigramWords("aaa", "bcc", bigramProbability); binaryDictionary.addBigramWords("abb", "aaa", bigramProbability); binaryDictionary.addBigramWords("abb", "bcc", bigramProbability); assertEquals(true, binaryDictionary.isValidBigram("aaa", "abb")); assertEquals(true, binaryDictionary.isValidBigram("aaa", "bcc")); assertEquals(true, binaryDictionary.isValidBigram("abb", "aaa")); assertEquals(true, binaryDictionary.isValidBigram("abb", "bcc")); assertEquals(false, binaryDictionary.isValidBigram("bcc", "aaa")); assertEquals(false, binaryDictionary.isValidBigram("bcc", "bbc")); assertEquals(false, binaryDictionary.isValidBigram("aaa", "aaa")); dictFile.delete(); } }