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/*
* Copyright (C) 2010,2011 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 com.android.inputmethod.latin.tests.R;
import android.content.res.AssetFileDescriptor;
import java.util.Locale;
public class UserBigramSuggestTests extends SuggestTestsBase {
private static final int SUGGESTION_STARTS = 6;
private static final int MAX_DATA = 20;
private static final int DELETE_DATA = 10;
private UserBigramSuggestHelper mHelper;
@Override
protected void setUp() throws Exception {
super.setUp();
final AssetFileDescriptor dict = openTestRawResourceFd(R.raw.test);
mHelper = new UserBigramSuggestHelper(
getContext(), mTestPackageFile, dict.getStartOffset(), dict.getLength(),
MAX_DATA, DELETE_DATA, createKeyboardId(Locale.US));
}
/************************** Tests ************************/
/**
* Test suggestion started at right time
*/
public void testUserBigram() {
for (int i = 0; i < SUGGESTION_STARTS; i++) mHelper.addToUserBigram(pair1);
for (int i = 0; i < (SUGGESTION_STARTS - 1); i++) mHelper.addToUserBigram(pair2);
isInSuggestions("bigram", mHelper.searchUserBigramSuggestion("user", 'b', "bigram"));
isNotInSuggestions("platform",
mHelper.searchUserBigramSuggestion("android", 'p', "platform"));
}
/**
* Test loading correct (locale) bigrams
*/
public void testOpenAndClose() {
for (int i = 0; i < SUGGESTION_STARTS; i++) mHelper.addToUserBigram(pair1);
isInSuggestions("bigram in default locale",
mHelper.searchUserBigramSuggestion("user", 'b', "bigram"));
// change to fr_FR
mHelper.changeUserBigramLocale(Locale.FRANCE);
for (int i = 0; i < SUGGESTION_STARTS; i++) mHelper.addToUserBigram(pair3);
isInSuggestions("france in fr_FR",
mHelper.searchUserBigramSuggestion("locale", 'f', "france"));
isNotInSuggestions("bigram in fr_FR",
mHelper.searchUserBigramSuggestion("user", 'b', "bigram"));
// change back to en_US
mHelper.changeUserBigramLocale(Locale.US);
isNotInSuggestions("france in en_US",
mHelper.searchUserBigramSuggestion("locale", 'f', "france"));
isInSuggestions("bigram in en_US",
mHelper.searchUserBigramSuggestion("user", 'b', "bigram"));
}
/**
* Test data gets pruned when it is over maximum
*/
public void testPruningData() {
for (int i = 0; i < SUGGESTION_STARTS; i++) mHelper.addToUserBigram(sentence0);
mHelper.flushUserBigrams();
isInSuggestions("world after several sentence 0",
mHelper.searchUserBigramSuggestion("Hello", 'w', "world"));
mHelper.addToUserBigram(sentence1);
mHelper.addToUserBigram(sentence2);
isInSuggestions("world after sentence 1 and 2",
mHelper.searchUserBigramSuggestion("Hello", 'w', "world"));
// pruning should happen
mHelper.addToUserBigram(sentence3);
mHelper.addToUserBigram(sentence4);
// trying to reopen database to check pruning happened in database
mHelper.changeUserBigramLocale(Locale.US);
isNotInSuggestions("world after sentence 3 and 4",
mHelper.searchUserBigramSuggestion("Hello", 'w', "world"));
}
private static final String[] pair1 = {"user", "bigram"};
private static final String[] pair2 = {"android","platform"};
private static final String[] pair3 = {"locale", "france"};
private static final String sentence0 = "Hello world";
private static final String sentence1 = "This is a test for user input based bigram";
private static final String sentence2 = "It learns phrases that contain both dictionary and "
+ "nondictionary words";
private static final String sentence3 = "This should give better suggestions than the previous "
+ "version";
private static final String sentence4 = "Android stock keyboard is improving";
}
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