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/*
* Copyright (C) 2010 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 com.android.inputmethod.latin.tests.R;
import java.util.Locale;
public class UserBigramTests extends AndroidTestCase {
private static final String TAG = "UserBigramTests";
private static final int SUGGESTION_STARTS = 6;
private static final int MAX_DATA = 20;
private static final int DELETE_DATA = 10;
private SuggestHelper sh;
@Override
protected void setUp() {
int resId = R.raw.test;
sh = new SuggestHelper(TAG, getTestContext(), resId, MAX_DATA, DELETE_DATA);
}
/************************** Tests ************************/
/**
* Test suggestion started at right time
*/
public void testUserBigram() {
for (int i = 0; i < SUGGESTION_STARTS; i++) sh.addToUserBigram(pair1);
for (int i = 0; i < (SUGGESTION_STARTS - 1); i++) sh.addToUserBigram(pair2);
assertTrue(sh.isUserBigramSuggestion("user", 'b', "bigram"));
assertFalse(sh.isUserBigramSuggestion("android", 'p', "platform"));
}
/**
* Test loading correct (locale) bigrams
*/
public void testOpenAndClose() {
for (int i = 0; i < SUGGESTION_STARTS; i++) sh.addToUserBigram(pair1);
assertTrue(sh.isUserBigramSuggestion("user", 'b', "bigram"));
// change to fr_FR
sh.changeUserBigramLocale(getTestContext(), Locale.FRANCE);
for (int i = 0; i < SUGGESTION_STARTS; i++) sh.addToUserBigram(pair3);
assertTrue(sh.isUserBigramSuggestion("locale", 'f', "france"));
assertFalse(sh.isUserBigramSuggestion("user", 'b', "bigram"));
// change back to en_US
sh.changeUserBigramLocale(getTestContext(), Locale.US);
assertFalse(sh.isUserBigramSuggestion("locale", 'f', "france"));
assertTrue(sh.isUserBigramSuggestion("user", 'b', "bigram"));
}
/**
* Test data gets pruned when it is over maximum
*/
public void testPruningData() {
for (int i = 0; i < SUGGESTION_STARTS; i++) sh.addToUserBigram(sentence0);
sh.flushUserBigrams();
assertTrue(sh.isUserBigramSuggestion("Hello", 'w', "world"));
sh.addToUserBigram(sentence1);
sh.addToUserBigram(sentence2);
assertTrue(sh.isUserBigramSuggestion("Hello", 'w', "world"));
// pruning should happen
sh.addToUserBigram(sentence3);
sh.addToUserBigram(sentence4);
// trying to reopen database to check pruning happened in database
sh.changeUserBigramLocale(getTestContext(), Locale.US);
assertFalse(sh.isUserBigramSuggestion("Hello", 'w', "world"));
}
final String[] pair1 = new String[] {"user", "bigram"};
final String[] pair2 = new String[] {"android","platform"};
final String[] pair3 = new String[] {"locale", "france"};
final String sentence0 = "Hello world";
final String sentence1 = "This is a test for user input based bigram";
final String sentence2 = "It learns phrases that contain both dictionary and nondictionary "
+ "words";
final String sentence3 = "This should give better suggestions than the previous version";
final String sentence4 = "Android stock keyboard is improving";
}
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