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/* Copyright 2015 Google Inc. All Rights Reserved.
Distributed under MIT license.
See file LICENSE for detail or copy at https://opensource.org/licenses/MIT
*/
package org.brotli.dec;
import static org.junit.Assert.assertArrayEquals;
import static org.junit.Assert.assertEquals;
import java.nio.charset.StandardCharsets;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
/**
* Tests for {@link Transform}.
*/
@RunWith(JUnit4.class)
public class TransformTest {
@Test
public void testTrimAll() {
byte[] output = new byte[2];
byte[] input = "word".getBytes(StandardCharsets.UTF_8);
Transform transform = new Transform("[", WordTransformType.OMIT_FIRST_5, "]");
Transform.transformDictionaryWord(output, 0, input, 0, input.length, transform);
assertArrayEquals(output, "[]".getBytes(StandardCharsets.UTF_8));
}
@Test
public void testCapitalize() {
byte[] output = new byte[8];
byte[] input = "qæप".getBytes(StandardCharsets.UTF_8);
Transform transform = new Transform("[", WordTransformType.UPPERCASE_ALL, "]");
Transform.transformDictionaryWord(output, 0, input, 0, input.length, transform);
assertArrayEquals(output, "[QÆय]".getBytes(StandardCharsets.UTF_8));
}
@Test
public void testAllTransforms() throws NoSuchAlgorithmException {
/* This string allows to apply all transforms: head and tail cutting, capitalization and
turning to upper case; all results will be mutually different. */
byte[] testWord = Transform.readUniBytes("o123456789abcdef");
byte[] output = new byte[2259];
int offset = 0;
for (int i = 0; i < Transform.TRANSFORMS.length; ++i) {
offset += Transform.transformDictionaryWord(
output, offset, testWord, 0, testWord.length, Transform.TRANSFORMS[i]);
output[offset++] = -1;
}
assertEquals(output.length, offset);
MessageDigest md = MessageDigest.getInstance("SHA-256");
md.update(output);
byte[] digest = md.digest();
String sha256 = String.format("%064x", new java.math.BigInteger(1, digest));
assertEquals("60f1c7e45d788e24938c5a3919aaf41a7d8ad474d0ced6b9e4c0079f4d1da8c4", sha256);
}
}
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