2 * Copyright 2008 ZXing authors
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
17 package com.google.zxing.common.reedsolomon;
19 import java.util.Random;
24 public final class ReedSolomonEncoderQRCodeTestCase extends AbstractReedSolomonTestCase {
27 * Tests example given in ISO 18004, Annex I
29 public void testISO18004Example() {
31 0x10, 0x20, 0x0C, 0x56, 0x61, 0x80, 0xEC, 0x11,
32 0xEC, 0x11, 0xEC, 0x11, 0xEC, 0x11, 0xEC, 0x11 };
33 int[] expectedECBytes = {
34 0xA5, 0x24, 0xD4, 0xC1, 0xED, 0x36, 0xC7, 0x87,
36 doTestQRCodeEncoding(dataBytes, expectedECBytes);
39 public void testQRCodeVersusDecoder() throws Exception {
40 Random random = getRandom();
41 ReedSolomonEncoder encoder = new ReedSolomonEncoder(GF256.QR_CODE_FIELD);
42 ReedSolomonDecoder decoder = new ReedSolomonDecoder(GF256.QR_CODE_FIELD);
43 for (int i = 0; i < 100; i++) {
44 int size = random.nextInt(1000);
45 int[] toEncode = new int[size];
46 int ecBytes = 1 + random.nextInt(2 * (1 + size / 8));
47 int dataBytes = size - ecBytes;
48 for (int j = 0; j < dataBytes; j++) {
49 toEncode[j] = random.nextInt(256);
51 int[] original = new int[dataBytes];
52 System.arraycopy(toEncode, 0, original, 0, dataBytes);
53 encoder.encode(toEncode, ecBytes);
54 decoder.decode(toEncode, ecBytes);
55 assertArraysEqual(original, 0, toEncode, 0, dataBytes);
59 // Need more tests I am sure