LatinIME/tests/src/com/android/inputmethod/latin/BinaryDictionaryTests.java
Keisuke Kuroyanagi d9f450ef00 Implement removeBigramWords() for DynamicPatriciaTrie.
Bug: 6669677
Change-Id: I99cb517511b4c968b8bf937baab5d7f42b0f534e
2013-09-17 18:05:32 +09:00

302 lines
14 KiB
Java

/*
* 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.ArrayList;
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<String,String>(), 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<String, Integer> probabilityMap = new HashMap<String, Integer>();
// 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();
}
public void testRandomlyAddBigramWords() {
// TODO: Add a test to check the frequency of the bigram score which uses current value
// calculated in the native code
final int wordCount = 100;
final int bigramCount = 1000;
final int codePointSetSize = 50;
final int seed = 11111;
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 ArrayList<String> words = new ArrayList<String>();
// Test a word that isn't contained within the dictionary.
final Random random = new Random(seed);
final int[] codePointSet = CodePointUtils.generateCodePointSet(codePointSetSize, random);
final int unigramProbability = 100;
final int bigramProbability = 10;
for (int i = 0; i < wordCount; ++i) {
final String word = CodePointUtils.generateWord(random, codePointSet);
words.add(word);
binaryDictionary.addUnigramWord(word, unigramProbability);
}
final boolean[][] bigramRelations = new boolean[wordCount][wordCount];
for (int i = 0; i < bigramCount; i++) {
final int word0Index = random.nextInt(wordCount);
final int word1Index = random.nextInt(wordCount);
final String word0 = words.get(word0Index);
final String word1 = words.get(word1Index);
bigramRelations[word0Index][word1Index] = true;
binaryDictionary.addBigramWords(word0, word1, bigramProbability);
}
for (int i = 0; i < words.size(); i++) {
for (int j = 0; j < words.size(); j++) {
assertEquals(bigramRelations[i][j],
binaryDictionary.isValidBigram(words.get(i), words.get(j)));
}
}
dictFile.delete();
}
public void testRemoveBigramWords() {
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"));
binaryDictionary.removeBigramWords("aaa", "abb");
assertEquals(false, binaryDictionary.isValidBigram("aaa", "abb"));
binaryDictionary.addBigramWords("aaa", "abb", bigramProbability);
assertEquals(true, binaryDictionary.isValidBigram("aaa", "abb"));
binaryDictionary.removeBigramWords("aaa", "bcc");
assertEquals(false, binaryDictionary.isValidBigram("aaa", "bcc"));
binaryDictionary.removeBigramWords("abb", "aaa");
assertEquals(false, binaryDictionary.isValidBigram("abb", "aaa"));
binaryDictionary.removeBigramWords("abb", "bcc");
assertEquals(false, binaryDictionary.isValidBigram("abb", "bcc"));
binaryDictionary.removeBigramWords("aaa", "abb");
// Test remove non-existing bigram operation.
binaryDictionary.removeBigramWords("aaa", "abb");
binaryDictionary.removeBigramWords("bcc", "aaa");
dictFile.delete();
}
}