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Add small unit test for adding/removing trigrams. 

Bug:17097992
Change-Id: I0ed0b4a172130726d822dadb6d7a806b94130104
main
Keisuke Kuroyanagi 2014-09-16 20:43:00 +09:00
parent f88ec161e9
commit 12a5c959b3
1 changed files with 76 additions and 0 deletions
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76
tests/src/com/android/inputmethod/latin/BinaryDictionaryTests.java
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@ -55,6 +55,10 @@ public class BinaryDictionaryTests extends AndroidTestCase {
return formatVersion > FormatSpec.VERSION401;
}
private static boolean supportsNgram(final int formatVersion) {
return formatVersion >= FormatSpec.VERSION4_DEV;
}
private File createEmptyDictionaryAndGetFile(final String dictId,
final int formatVersion) throws IOException {
if (formatVersion == FormatSpec.VERSION4
@ -208,6 +212,14 @@ public class BinaryDictionaryTests extends AndroidTestCase {
BinaryDictionary.NOT_A_VALID_TIMESTAMP /* timestamp */);
}
private static void addTrigramEntry(final BinaryDictionary binaryDictionary, final String word0,
final String word1, final String word2, final int probability) {
final PrevWordsInfo prevWordsInfo =
new PrevWordsInfo(new WordInfo[] { new WordInfo(word1), new WordInfo(word0) } );
binaryDictionary.addNgramEntry(prevWordsInfo, word2, probability,
BinaryDictionary.NOT_A_VALID_TIMESTAMP /* timestamp */);
}
private static boolean isValidBigram(final BinaryDictionary binaryDictionary,
final String word0, final String word1) {
return binaryDictionary.isValidNgram(new PrevWordsInfo(new WordInfo(word0)), word1);
@ -218,11 +230,25 @@ public class BinaryDictionaryTests extends AndroidTestCase {
binaryDictionary.removeNgramEntry(new PrevWordsInfo(new WordInfo(word0)), word1);
}
private static void removeTrigramEntry(final BinaryDictionary binaryDictionary,
final String word0, final String word1, final String word2) {
final PrevWordsInfo prevWordsInfo =
new PrevWordsInfo(new WordInfo[] { new WordInfo(word1), new WordInfo(word0) } );
binaryDictionary.removeNgramEntry(prevWordsInfo, word2);
}
private static int getBigramProbability(final BinaryDictionary binaryDictionary,
final String word0, final String word1) {
return binaryDictionary.getNgramProbability(new PrevWordsInfo(new WordInfo(word0)), word1);
}
private static int getTrigramProbability(final BinaryDictionary binaryDictionary,
final String word0, final String word1, final String word2) {
final PrevWordsInfo prevWordsInfo =
new PrevWordsInfo(new WordInfo[] { new WordInfo(word1), new WordInfo(word0) } );
return binaryDictionary.getNgramProbability(prevWordsInfo, word2);
}
public void testAddUnigramWord() {
for (final int formatVersion : DICT_FORMAT_VERSIONS) {
testAddUnigramWord(formatVersion);
@ -500,6 +526,56 @@ public class BinaryDictionaryTests extends AndroidTestCase {
dictFile.delete();
}
public void testAddTrigramWords() {
for (final int formatVersion : DICT_FORMAT_VERSIONS) {
if (supportsNgram(formatVersion)) {
testAddTrigramWords(formatVersion);
}
}
}
private void testAddTrigramWords(final int formatVersion) {
File dictFile = null;
try {
dictFile = createEmptyDictionaryAndGetFile("TestBinaryDictionary", formatVersion);
} catch (IOException e) {
fail("IOException 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 unigramProbability = 100;
final int trigramProbability = 150;
final int updatedTrigramProbability = 200;
addUnigramWord(binaryDictionary, "aaa", unigramProbability);
addUnigramWord(binaryDictionary, "abb", unigramProbability);
addUnigramWord(binaryDictionary, "bcc", unigramProbability);
addBigramWords(binaryDictionary, "abb", "bcc", 10);
addBigramWords(binaryDictionary, "abb", "aaa", 10);
addTrigramEntry(binaryDictionary, "aaa", "abb", "bcc", trigramProbability);
addTrigramEntry(binaryDictionary, "bcc", "abb", "aaa", trigramProbability);
assertEquals(trigramProbability,
getTrigramProbability(binaryDictionary, "aaa", "abb", "bcc"));
assertEquals(trigramProbability,
getTrigramProbability(binaryDictionary, "bcc", "abb", "aaa"));
assertFalse(isValidBigram(binaryDictionary, "aaa", "abb"));
addTrigramEntry(binaryDictionary, "bcc", "abb", "aaa", updatedTrigramProbability);
assertEquals(updatedTrigramProbability,
getTrigramProbability(binaryDictionary, "bcc", "abb", "aaa"));
removeTrigramEntry(binaryDictionary, "aaa", "abb", "bcc");
assertEquals(Dictionary.NOT_A_PROBABILITY,
getTrigramProbability(binaryDictionary, "aaa", "abb", "bcc"));
assertTrue(isValidBigram(binaryDictionary, "abb", "bcc"));
dictFile.delete();
}
public void testFlushDictionary() {
for (final int formatVersion : DICT_FORMAT_VERSIONS) {
testFlushDictionary(formatVersion);