/*
    * Copyright (C) 2010, Google Inc. 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.Base64.decode;
  import static org.eclipse.jgit.util.Base64.encodeBytes;
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.fail;
  
  import org.eclipse.jgit.junit.JGitTestUtil;
  import org.eclipse.jgit.lib.Constants;
  import org.junit.Test;
  
  public class Base64Test {
  	@Test
  	public void testEncode() {
  		assertEquals("aGkK", encodeBytes(b("hi\n")));
  		assertEquals("AAECDQoJcQ==", encodeBytes(b("\0\1\2\r\n\tq")));
  	}
  
  	@Test
  	public void testDecode() {
  		JGitTestUtil.assertEquals(b("hi\n"), decode("aGkK"));
  		JGitTestUtil.assertEquals(b("\0\1\2\r\n\tq"), decode("AAECDQoJcQ=="));
  		JGitTestUtil.assertEquals(b("\0\1\2\r\n\tq"),
  				decode("A A E\tC D\rQ o\nJ c Q=="));
  		JGitTestUtil.assertEquals(b("\u000EB"), decode("DkL="));
  	}
  
  	@Test
  	public void testDecodeFail_NonBase64Character() {
  		try {
  			decode("! a bad base64 string !");
  			fail("Accepted bad string in decode");
  		} catch (IllegalArgumentException fail) {
  			// Expected
  		}
  	}
  
  	@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(encodeBytes(b(e))));
  	}
  
  	private static byte[] b(String str) {
  		return Constants.encode(str);
  	}
  
  }