/*
* Copyright 2002-2016 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.security.crypto.util;
import static org.assertj.core.api.Assertions.assertThat;
import java.util.Arrays;
import org.junit.Test;
import org.springframework.security.crypto.codec.Hex;
public class EncodingUtilsTests {
@Test
public void hexEncode() {
byte[] bytes = new byte[] { (byte) 0x01, (byte) 0xFF, (byte) 65, (byte) 66,
(byte) 67, (byte) 0xC0, (byte) 0xC1, (byte) 0xC2 };
String result = new String(Hex.encode(bytes));
assertThat(result).isEqualTo("01ff414243c0c1c2");
}
@Test
public void hexDecode() {
byte[] bytes = new byte[] { (byte) 0x01, (byte) 0xFF, (byte) 65, (byte) 66,
(byte) 67, (byte) 0xC0, (byte) 0xC1, (byte) 0xC2 };
byte[] result = Hex.decode("01ff414243c0c1c2");
assertThat(Arrays.equals(bytes, result)).isTrue();
}
@Test
public void concatenate() {
byte[] bytes = new byte[] { (byte) 0x01, (byte) 0xFF, (byte) 65, (byte) 66,
(byte) 67, (byte) 0xC0, (byte) 0xC1, (byte) 0xC2 };
byte[] one = new byte[] { (byte) 0x01 };
byte[] two = new byte[] { (byte) 0xFF, (byte) 65, (byte) 66 };
byte[] three = new byte[] { (byte) 67, (byte) 0xC0, (byte) 0xC1, (byte) 0xC2 };
assertThat(Arrays.equals(bytes,
EncodingUtils.concatenate(one, two, three))).isTrue();
}
@Test
public void subArray() {
byte[] bytes = new byte[] { (byte) 0x01, (byte) 0xFF, (byte) 65, (byte) 66,
(byte) 67, (byte) 0xC0, (byte) 0xC1, (byte) 0xC2 };
byte[] two = new byte[] { (byte) 0xFF, (byte) 65, (byte) 66 };
byte[] subArray = EncodingUtils.subArray(bytes, 1, 4);
assertThat(subArray.length).isEqualTo(3);
assertThat(Arrays.equals(two, subArray)).isTrue();
}
}