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/*
* Copyright (C) 2012 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.dicttool;
import com.android.inputmethod.latin.makedict.BinaryDictIOUtils;
import com.android.inputmethod.latin.makedict.DictDecoder;
import com.android.inputmethod.latin.makedict.DictEncoder;
import com.android.inputmethod.latin.makedict.DictionaryHeader;
import com.android.inputmethod.latin.makedict.FormatSpec.DictionaryOptions;
import com.android.inputmethod.latin.makedict.FormatSpec.FormatOptions;
import com.android.inputmethod.latin.makedict.FusionDictionary;
import com.android.inputmethod.latin.makedict.FusionDictionary.PtNodeArray;
import com.android.inputmethod.latin.makedict.ProbabilityInfo;
import com.android.inputmethod.latin.makedict.UnsupportedFormatException;
import com.android.inputmethod.latin.makedict.Ver2DictEncoder;
import junit.framework.TestCase;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.HashMap;
/**
* Unit tests for BinaryDictOffdeviceUtils
*/
public class BinaryDictOffdeviceUtilsTests extends TestCase {
private static final int TEST_FREQ = 37; // Some arbitrary value unlikely to happen by chance
public void testGetRawDictWorks() throws IOException, UnsupportedFormatException {
final String VERSION = "1";
final String LOCALE = "test";
final String ID = "main:test";
// Create a thrice-compressed dictionary file.
final DictionaryOptions testOptions = new DictionaryOptions(new HashMap<String, String>());
testOptions.mAttributes.put(DictionaryHeader.DICTIONARY_VERSION_KEY, VERSION);
testOptions.mAttributes.put(DictionaryHeader.DICTIONARY_LOCALE_KEY, LOCALE);
testOptions.mAttributes.put(DictionaryHeader.DICTIONARY_ID_KEY, ID);
final FusionDictionary dict = new FusionDictionary(new PtNodeArray(), testOptions);
dict.add("foo", new ProbabilityInfo(TEST_FREQ), null, false /* isNotAWord */,
false /* isPossiblyOffensive */);
dict.add("fta", new ProbabilityInfo(1), null, false /* isNotAWord */,
false /* isPossiblyOffensive */);
dict.add("ftb", new ProbabilityInfo(1), null, false /* isNotAWord */,
false /* isPossiblyOffensive */);
dict.add("bar", new ProbabilityInfo(1), null, false /* isNotAWord */,
false /* isPossiblyOffensive */);
dict.add("fool", new ProbabilityInfo(1), null, false /* isNotAWord */,
false /* isPossiblyOffensive */);
final File dst = File.createTempFile("testGetRawDict", ".tmp");
dst.deleteOnExit();
try (final OutputStream out = Compress.getCompressedStream(
new BufferedOutputStream(new FileOutputStream(dst)))) {
final DictEncoder dictEncoder = new Ver2DictEncoder(out);
dictEncoder.writeDictionary(dict, new FormatOptions(2, false));
}
// Test for an actually compressed dictionary and its contents
final BinaryDictOffdeviceUtils.DecoderChainSpec<File> decodeSpec =
BinaryDictOffdeviceUtils.getRawDictionaryOrNull(dst);
assertEquals("Wrong decode spec", "raw > compression", decodeSpec.describeChain());
final DictDecoder dictDecoder = BinaryDictIOUtils.getDictDecoder(decodeSpec.mResult, 0,
decodeSpec.mResult.length());
final FusionDictionary resultDict =
dictDecoder.readDictionaryBinary(false /* deleteDictIfBroken */);
assertEquals("Wrong version attribute", VERSION, resultDict.mOptions.mAttributes.get(
DictionaryHeader.DICTIONARY_VERSION_KEY));
assertEquals("Wrong locale attribute", LOCALE, resultDict.mOptions.mAttributes.get(
DictionaryHeader.DICTIONARY_LOCALE_KEY));
assertEquals("Wrong id attribute", ID, resultDict.mOptions.mAttributes.get(
DictionaryHeader.DICTIONARY_ID_KEY));
assertEquals("Dictionary can't be read back correctly",
FusionDictionary.findWordInTree(resultDict.mRootNodeArray, "foo").getProbability(),
TEST_FREQ);
}
public void testGetRawDictFails() throws IOException {
// Randomly create some 4k file containing garbage
final File dst = File.createTempFile("testGetRawDict", ".tmp");
dst.deleteOnExit();
try (final OutputStream out = new BufferedOutputStream(new FileOutputStream(dst))) {
for (int i = 0; i < 1024; ++i) {
out.write(0x12345678);
}
}
// Test that a random data file actually fails
assertNull("Wrongly identified data file",
BinaryDictOffdeviceUtils.getRawDictionaryOrNull(dst));
final File gzDst = File.createTempFile("testGetRawDict", ".tmp");
gzDst.deleteOnExit();
try (final OutputStream gzOut = Compress.getCompressedStream(
new BufferedOutputStream(new FileOutputStream(gzDst)))) {
for (int i = 0; i < 1024; ++i) {
gzOut.write(0x12345678);
}
}
// Test that a compressed random data file actually fails
assertNull("Wrongly identified data file",
BinaryDictOffdeviceUtils.getRawDictionaryOrNull(gzDst));
}
}
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