/*
    * Copyright (C) 2010, Google Inc.
    * Copyright (C) 2020 Michael Dardis and others
    *
    * This program and the accompanying materials are made available under the
    * terms of the Eclipse Distribution License v. 1.0 which is available at
    * https://www.eclipse.org/org/documents/edl-v10.php.
    *
    * SPDX-License-Identifier: BSD-3-Clause
   */
  
  package org.eclipse.jgit.util;
  
  import static org.eclipse.jgit.util.Hex.decode;
  import static org.eclipse.jgit.util.Hex.toHexString;
  import static org.junit.Assert.assertEquals;
  
  import org.eclipse.jgit.junit.JGitTestUtil;
  import org.eclipse.jgit.lib.Constants;
  import org.junit.Test;
  
  public class HexTest {
  	@Test
  	public void testEncode() {
  		assertEquals("68690a", toHexString(b("hi\n")));
  		assertEquals("0001020d0a0971", toHexString(b("\0\1\2\r\n\tq")));
  	}
  
  	@Test
  	public void testDecode() {
  		JGitTestUtil.assertEquals(b("hi\n"), decode("68690a"));
  		JGitTestUtil.assertEquals(b("\0\1\2\r\n\tq"), decode("0001020d0a0971"));
  		JGitTestUtil.assertEquals(b("\u000EB"), decode("0E42"));
  	}
  
  	@Test
  	public void testEncodeMatchesDecode() {
  		String[] testStrings = { "", "cow", "a", "a secret string",
  				"\0\1\2\r\n\t" };
  		for (String e : testStrings) {
  			JGitTestUtil.assertEquals(b(e), decode(toHexString(b(e))));
  		}
  	}
  
  	@Test(expected = IllegalArgumentException.class)
  	public void testIllegal() {
  		decode("0011test00");
  	}
  
  	@Test(expected = IllegalArgumentException.class)
  	public void testIllegal2() {
  		decode("0123456789abcdefgh");
  	}
  
  	@Test(expected = IllegalArgumentException.class)
  	public void testIllegal3() {
  		decode("0123456789abcdef-_+*");
  	}
  
  	@Test
  	public void testLegal() {
  		decode("0123456789abcdef");
  	}
  
  	@Test
  	public void testLegal2() {
  		decode("deadbeef");
  	}
  
  	private static byte[] b(String str) {
  		return Constants.encode(str);
  	}
  
  }