1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * https://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing,
13 * software distributed under the License is distributed on an
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15 * KIND, either express or implied. See the License for the
16 * specific language governing permissions and limitations
17 * under the License.
18 */
19
20 package org.apache.commons.compress.compressors.zstandard;
21
22 import static org.junit.jupiter.api.Assertions.assertFalse;
23 import static org.junit.jupiter.api.Assertions.assertTrue;
24
25 import org.junit.jupiter.api.Test;
26
27 class ZstdUtilsTest {
28
29 @Test
30 void testMatchesSkippableFrame() {
31 final byte[] data = { 0, (byte) 0x2A, (byte) 0x4D, (byte) 0x18, };
32 assertFalse(ZstdUtils.matches(data, 4));
33 for (byte b = (byte) 0x50; b < 0x60; b++) {
34 data[0] = b;
35 assertTrue(ZstdUtils.matches(data, 4));
36 }
37 assertFalse(ZstdUtils.matches(data, 3));
38 assertTrue(ZstdUtils.matches(data, 5));
39 }
40
41 @Test
42 void testMatchesZstandardFrame() {
43 final byte[] data = { (byte) 0x28, (byte) 0xB5, (byte) 0x2F, (byte) 0xFD, };
44 assertFalse(ZstdUtils.matches(data, 3));
45 assertTrue(ZstdUtils.matches(data, 4));
46 assertTrue(ZstdUtils.matches(data, 5));
47 data[3] = '0';
48 assertFalse(ZstdUtils.matches(data, 4));
49 }
50 }