am db6984c7: Merge "Have random words stick to a restricted (random) charset"
* commit 'db6984c7bd0f3a933581cd0af201cf5e70643e45': Have random words stick to a restricted (random) charsetmain
commit
cbc1fd044b
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@ -52,6 +52,7 @@ import java.util.Set;
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public class BinaryDictIOTests extends AndroidTestCase {
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private static final String TAG = BinaryDictIOTests.class.getSimpleName();
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private static final int DEFAULT_MAX_UNIGRAMS = 100;
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private static final int DEFAULT_CODE_POINT_SET_SIZE = 50;
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private static final int UNIGRAM_FREQ = 10;
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private static final int BIGRAM_FREQ = 50;
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private static final int TOLERANCE_OF_BIGRAM_FREQ = 5;
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@ -81,7 +82,8 @@ public class BinaryDictIOTests extends AndroidTestCase {
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Log.e(TAG, "Testing dictionary: seed is " + seed);
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final Random random = new Random(seed);
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sWords.clear();
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generateWords(maxUnigrams, random);
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final int[] codePointSet = generateCodePointSet(DEFAULT_CODE_POINT_SET_SIZE, random);
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generateWords(maxUnigrams, random, codePointSet);
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for (int i = 0; i < sWords.size(); ++i) {
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sChainBigrams.put(i, new ArrayList<Integer>());
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@ -96,6 +98,23 @@ public class BinaryDictIOTests extends AndroidTestCase {
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}
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}
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private int[] generateCodePointSet(final int codePointSetSize, final Random random) {
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final int[] codePointSet = new int[codePointSetSize];
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for (int i = codePointSet.length - 1; i >= 0; ) {
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final int r = Math.abs(random.nextInt());
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if (r < 0) continue;
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// Don't insert 0~0x20, but insert any other code point.
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// Code points are in the range 0~0x10FFFF.
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final int candidateCodePoint = (int)(0x20 + r % (Character.MAX_CODE_POINT - 0x20));
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// Code points between MIN_ and MAX_SURROGATE are not valid on their own.
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if (candidateCodePoint >= Character.MIN_SURROGATE
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&& candidateCodePoint <= Character.MAX_SURROGATE) continue;
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codePointSet[i] = candidateCodePoint;
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--i;
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}
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return codePointSet;
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}
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// Utilities for test
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/**
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@ -131,28 +150,20 @@ public class BinaryDictIOTests extends AndroidTestCase {
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/**
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* Generates a random word.
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*/
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private String generateWord(final Random random) {
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private String generateWord(final Random random, final int[] codePointSet) {
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StringBuilder builder = new StringBuilder("a");
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int count = random.nextInt() % 30; // Arbitrarily 30 chars max
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while (count > 0) {
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final long r = Math.abs(random.nextInt());
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if (r < 0) continue;
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// Don't insert 0~0x20, but insert any other code point.
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// Code points are in the range 0~0x10FFFF.
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final int candidateCodePoint = (int)(0x20 + r % (Character.MAX_CODE_POINT - 0x20));
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// Code points between MIN_ and MAX_SURROGATE are not valid on their own.
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if (candidateCodePoint >= Character.MIN_SURROGATE
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&& candidateCodePoint <= Character.MAX_SURROGATE) continue;
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builder.appendCodePoint(candidateCodePoint);
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builder.appendCodePoint(codePointSet[Math.abs(random.nextInt()) % codePointSet.length]);
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--count;
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}
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return builder.toString();
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}
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private void generateWords(final int number, final Random random) {
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private void generateWords(final int number, final Random random, final int[] codePointSet) {
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final Set<String> wordSet = CollectionUtils.newHashSet();
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while (wordSet.size() < number) {
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wordSet.add(generateWord(random));
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wordSet.add(generateWord(random, codePointSet));
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}
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sWords.addAll(wordSet);
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}
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@ -560,8 +571,9 @@ public class BinaryDictIOTests extends AndroidTestCase {
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// Test a word that isn't contained within the dictionary.
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final Random random = new Random((int)System.currentTimeMillis());
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final int[] codePointSet = generateCodePointSet(DEFAULT_CODE_POINT_SET_SIZE, random);
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for (int i = 0; i < 1000; ++i) {
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final String word = generateWord(random);
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final String word = generateWord(random, codePointSet);
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if (sWords.indexOf(word) != -1) continue;
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runGetTerminalPosition(buffer, word, i, false);
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}
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