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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 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;
@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("aac"));
assertEquals(probability, binaryDictionary.getFrequency("aaaa"));
assertEquals(probability, binaryDictionary.getFrequency("a"));
assertEquals(updatedProbability, binaryDictionary.getFrequency("aaa"));
}
}
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