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/*
* 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 android.util.Log;
import com.android.inputmethod.latin.makedict.BinaryDictEncoderUtils;
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.UnsupportedFormatException;
import com.android.inputmethod.latin.makedict.Ver4DictEncoder;
import com.android.inputmethod.latin.makedict.FusionDictionary.DictionaryOptions;
import com.android.inputmethod.latin.makedict.FusionDictionary.PtNodeArray;
import java.io.File;
import java.io.IOException;
import java.util.HashMap;
import java.util.Locale;
// TODO: Add a test to evaluate the speed of operations of Ver4 dictionary.
@LargeTest
public class Ver4BinaryDictionaryTests extends AndroidTestCase {
private static final String TAG = Ver4BinaryDictionaryTests.class.getSimpleName();
private static final String TEST_LOCALE = "test";
private static final FormatSpec.FormatOptions FORMAT_OPTIONS =
new FormatSpec.FormatOptions(4, true /* supportsDynamicUpdate */);
@Override
protected void setUp() throws Exception {
super.setUp();
}
@Override
protected void tearDown() throws Exception {
super.tearDown();
}
// TODO: remove after native code support dictionary creation.
private DictionaryOptions getDictionaryOptions(final String id, final String version) {
final DictionaryOptions options = new DictionaryOptions(new HashMap<String, String>(),
false /* germanUmlautProcessing */, false /* frenchLigatureProcessing */);
options.mAttributes.put("version", version);
options.mAttributes.put("dictionary", id);
return options;
}
// TODO: remove after native code support dictionary creation.
private File getTrieFile(final String id, final String version) {
return new File(getContext().getCacheDir() + "/" + id + "." + version,
TEST_LOCALE + "." + version + FormatSpec.TRIE_FILE_EXTENSION);
}
public void testIsValidDictionary() {
final String dictVersion = Long.toString(System.currentTimeMillis());
final File trieFile = getTrieFile(TEST_LOCALE, dictVersion);
BinaryDictionary binaryDictionary = new BinaryDictionary(trieFile.getAbsolutePath(),
0 /* offset */, trieFile.length(), true /* useFullEditDistance */,
Locale.getDefault(), TEST_LOCALE, true /* isUpdatable */);
assertFalse(binaryDictionary.isValidDictionary());
final FusionDictionary dict = new FusionDictionary(new PtNodeArray(),
getDictionaryOptions(TEST_LOCALE, dictVersion));
DictEncoder encoder = new Ver4DictEncoder(getContext().getCacheDir());
try {
encoder.writeDictionary(dict, FORMAT_OPTIONS);
} catch (IOException e) {
Log.e(TAG, "IOException while writing dictionary", e);
} catch (UnsupportedFormatException e) {
Log.e(TAG, "Unsupported format", e);
}
binaryDictionary = new BinaryDictionary(trieFile.getAbsolutePath(),
0 /* offset */, trieFile.length(), true /* useFullEditDistance */,
Locale.getDefault(), TEST_LOCALE, true /* isUpdatable */);
assertTrue(binaryDictionary.isValidDictionary());
}
// TODO: Add large tests.
public void testReadProbability() {
final String dictVersion = Long.toString(System.currentTimeMillis());
final FusionDictionary dict = new FusionDictionary(new PtNodeArray(),
getDictionaryOptions(TEST_LOCALE, dictVersion));
final int frequency = 100;
dict.add("a", frequency, null, false /* isNotAWord */);
dict.add("aaa", frequency, null, false /* isNotAWord */);
dict.add("ab", frequency, null, false /* isNotAWord */);
DictEncoder encoder = new Ver4DictEncoder(getContext().getCacheDir());
try {
encoder.writeDictionary(dict, FORMAT_OPTIONS);
} catch (IOException e) {
Log.e(TAG, "IOException while writing dictionary", e);
} catch (UnsupportedFormatException e) {
Log.e(TAG, "Unsupported format", e);
}
File trieFile = getTrieFile(TEST_LOCALE, dictVersion);
BinaryDictionary binaryDictionary = new BinaryDictionary(trieFile.getAbsolutePath(),
0 /* offset */, trieFile.length(), true /* useFullEditDistance */,
Locale.getDefault(), TEST_LOCALE, true /* isUpdatable */);
assertTrue(binaryDictionary.isValidDictionary());
assertEquals(frequency, binaryDictionary.getFrequency("a"));
assertEquals(frequency, binaryDictionary.getFrequency("aaa"));
assertEquals(frequency, binaryDictionary.getFrequency("ab"));
}
public static int getCalculatedBigramProbabiliy(BinaryDictionary binaryDictionary,
final int unigramFrequency, final int bigramFrequency) {
final int bigramFrequencyDiff = BinaryDictEncoderUtils.getBigramFrequencyDiff(
unigramFrequency, bigramFrequency);
return binaryDictionary.calculateProbability(unigramFrequency, bigramFrequencyDiff);
}
// TODO: Add large tests.
public void testReadBigrams() {
final String dictVersion = Long.toString(System.currentTimeMillis());
final FusionDictionary dict = new FusionDictionary(new PtNodeArray(),
getDictionaryOptions(TEST_LOCALE, dictVersion));
final int unigramFrequency = 1;
final int bigramFrequency0 = 150;
final int bigramFrequency1 = 1;
final int bigramFrequency2 = 255;
dict.add("a", unigramFrequency, null, false /* isNotAWord */);
dict.add("aaa", unigramFrequency, null, false /* isNotAWord */);
dict.add("ab", unigramFrequency, null, false /* isNotAWord */);
dict.setBigram("a", "aaa", bigramFrequency0);
dict.setBigram("a", "ab", bigramFrequency1);
dict.setBigram("aaa", "ab", bigramFrequency2);
DictEncoder encoder = new Ver4DictEncoder(getContext().getCacheDir());
try {
encoder.writeDictionary(dict, FORMAT_OPTIONS);
} catch (IOException e) {
Log.e(TAG, "IOException while writing dictionary", e);
} catch (UnsupportedFormatException e) {
Log.e(TAG, "Unsupported format", e);
}
File trieFile = getTrieFile(TEST_LOCALE, dictVersion);
BinaryDictionary binaryDictionary = new BinaryDictionary(trieFile.getAbsolutePath(),
0 /* offset */, trieFile.length(), true /* useFullEditDistance */,
Locale.getDefault(), TEST_LOCALE, true /* isUpdatable */);
assertTrue(binaryDictionary.isValidDictionary());
assertEquals(getCalculatedBigramProbabiliy(binaryDictionary, unigramFrequency,
bigramFrequency0), binaryDictionary.getBigramProbability("a", "aaa"));
assertEquals(getCalculatedBigramProbabiliy(binaryDictionary, unigramFrequency,
bigramFrequency1), binaryDictionary.getBigramProbability("a", "ab"));
assertEquals(getCalculatedBigramProbabiliy(binaryDictionary, unigramFrequency,
bigramFrequency2), binaryDictionary.getBigramProbability("aaa", "ab"));
assertFalse(binaryDictionary.isValidBigram("aaa", "a"));
assertFalse(binaryDictionary.isValidBigram("ab", "a"));
assertFalse(binaryDictionary.isValidBigram("ab", "aaa"));
}
}
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