/*
* 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.util;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import org.junit.Before;
import org.junit.Test;
import static org.junit.Assert.*;
/**
* @author Arjen Poutsma
* @author Juergen Hoeller
*/
public class DigestUtilsTests {
private byte[] bytes;
@Before
public void createBytes() throws UnsupportedEncodingException {
bytes = "Hello World".getBytes("UTF-8");
}
@Test
public void md5() throws IOException {
byte[] expected = new byte[]
{-0x4f, 0xa, -0x73, -0x4f, 0x64, -0x20, 0x75, 0x41, 0x5, -0x49, -0x57, -0x65, -0x19, 0x2e, 0x3f, -0x1b};
byte[] result = DigestUtils.md5Digest(bytes);
assertArrayEquals("Invalid hash", expected, result);
result = DigestUtils.md5Digest(new ByteArrayInputStream(bytes));
assertArrayEquals("Invalid hash", expected, result);
}
@Test
public void md5Hex() throws IOException {
String expected = "b10a8db164e0754105b7a99be72e3fe5";
String hash = DigestUtils.md5DigestAsHex(bytes);
assertEquals("Invalid hash", expected, hash);
hash = DigestUtils.md5DigestAsHex(new ByteArrayInputStream(bytes));
assertEquals("Invalid hash", expected, hash);
}
@Test
public void md5StringBuilder() throws IOException {
String expected = "b10a8db164e0754105b7a99be72e3fe5";
StringBuilder builder = new StringBuilder();
DigestUtils.appendMd5DigestAsHex(bytes, builder);
assertEquals("Invalid hash", expected, builder.toString());
builder = new StringBuilder();
DigestUtils.appendMd5DigestAsHex(new ByteArrayInputStream(bytes), builder);
assertEquals("Invalid hash", expected, builder.toString());
}
}