/*
    * Copyright (C) 2009, Google Inc.
    * Copyright (C) 2008, Jonas Fonseca <fonseca@diku.dk>
    * Copyright (C) 2006-2008, Shawn O. Pearce <spearce@spearce.org>
    * and other copyright owners as documented in the project's IP log.
    *
    * This program and the accompanying materials are made available
    * under the terms of the Eclipse Distribution License v1.0 which
    * accompanies this distribution, is reproduced below, and is
   * available at http://www.eclipse.org/org/documents/edl-v10.php
   *
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or
   * without modification, are permitted provided that the following
   * conditions are met:
   *
   * - Redistributions of source code must retain the above copyright
   *   notice, this list of conditions and the following disclaimer.
   *
   * - Redistributions in binary form must reproduce the above
   *   copyright notice, this list of conditions and the following
   *   disclaimer in the documentation and/or other materials provided
   *   with the distribution.
   *
   * - Neither the name of the Eclipse Foundation, Inc. nor the
   *   names of its contributors may be used to endorse or promote
   *   products derived from this software without specific prior
   *   written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
   * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
   * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
   * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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  package org.eclipse.jgit.lib;
  
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.assertFalse;
  import static org.junit.Assert.assertTrue;
  
  import org.eclipse.jgit.errors.InvalidObjectIdException;
  import org.junit.Test;
  
  public class ObjectIdTest {
  	@Test
  	public void test001_toString() {
  		final String x = "def4c620bc3713bb1bb26b808ec9312548e73946";
  		final ObjectId oid = ObjectId.fromString(x);
  		assertEquals(x, oid.name());
  	}
  
  	@Test
  	public void test002_toString() {
  		final String x = "ff00eedd003713bb1bb26b808ec9312548e73946";
  		final ObjectId oid = ObjectId.fromString(x);
  		assertEquals(x, oid.name());
  	}
  
  	@Test
  	public void test003_equals() {
  		final String x = "def4c620bc3713bb1bb26b808ec9312548e73946";
  		final ObjectId a = ObjectId.fromString(x);
  		final ObjectId b = ObjectId.fromString(x);
  		assertEquals(a.hashCode(), b.hashCode());
  		assertEquals("a and b are same", b, a);
  	}
  
  	@Test
  	public void test004_isId() {
  		assertTrue("valid id", ObjectId
  				.isId("def4c620bc3713bb1bb26b808ec9312548e73946"));
  	}
  
  	@Test
  	public void test005_notIsId() {
  		assertFalse("bob is not an id", ObjectId.isId("bob"));
  	}
  
  	@Test
  	public void test006_notIsId() {
  		assertFalse("39 digits is not an id", ObjectId
  				.isId("def4c620bc3713bb1bb26b808ec9312548e7394"));
  	}
  
  	@Test
  	public void test007_isId() {
  		assertTrue("uppercase is accepted", ObjectId
  				.isId("Def4c620bc3713bb1bb26b808ec9312548e73946"));
 	}
 
 	@Test
 	public void test008_notIsId() {
 		assertFalse("g is not a valid hex digit", ObjectId
 				.isId("gef4c620bc3713bb1bb26b808ec9312548e73946"));
 	}
 
 	@Test
 	public void test009_toString() {
 		final String x = "ff00eedd003713bb1bb26b808ec9312548e73946";
 		final ObjectId oid = ObjectId.fromString(x);
 		assertEquals(x, ObjectId.toString(oid));
 	}
 
 	@Test
 	public void test010_toString() {
 		final String x = "0000000000000000000000000000000000000000";
 		assertEquals(x, ObjectId.toString(null));
 	}
 
 	@Test
 	public void test011_toString() {
 		final String x = "0123456789ABCDEFabcdef1234567890abcdefAB";
 		final ObjectId oid = ObjectId.fromString(x);
 		assertEquals(x.toLowerCase(), oid.name());
 	}
 
 	@Test(expected = InvalidObjectIdException.class)
 	public void testFromString_short() {
 		ObjectId.fromString("cafe1234");
 	}
 
 	@Test(expected = InvalidObjectIdException.class)
 	public void testFromString_nonHex() {
 		ObjectId.fromString("0123456789abcdefghij0123456789abcdefghij");
 	}
 
 	@Test(expected = InvalidObjectIdException.class)
 	public void testFromString_shortNonHex() {
 		ObjectId.fromString("6789ghij");
 	}
 
 	@Test
 	public void testGetByte() {
 		byte[] raw = new byte[20];
 		for (int i = 0; i < 20; i++)
 			raw[i] = (byte) (0xa0 + i);
 		ObjectId id = ObjectId.fromRaw(raw);
 
 		assertEquals(raw[0] & 0xff, id.getFirstByte());
 		assertEquals(raw[0] & 0xff, id.getByte(0));
 		assertEquals(raw[1] & 0xff, id.getByte(1));
 
 		for (int i = 2; i < 20; i++)
 			assertEquals("index " + i, raw[i] & 0xff, id.getByte(i));
 	}
 
 	@Test
 	public void testSetByte() {
 		byte[] exp = new byte[20];
 		for (int i = 0; i < 20; i++)
 			exp[i] = (byte) (0xa0 + i);
 
 		MutableObjectId id = new MutableObjectId();
 		id.fromRaw(exp);
 		assertEquals(ObjectId.fromRaw(exp).name(), id.name());
 
 		id.setByte(0, 0x10);
 		assertEquals(0x10, id.getByte(0));
 		exp[0] = 0x10;
 		assertEquals(ObjectId.fromRaw(exp).name(), id.name());
 
 		for (int p = 1; p < 20; p++) {
 			id.setByte(p, 0x10 + p);
 			assertEquals(0x10 + p, id.getByte(p));
 			exp[p] = (byte) (0x10 + p);
 			assertEquals(ObjectId.fromRaw(exp).name(), id.name());
 		}
 
 		for (int p = 0; p < 20; p++) {
 			id.setByte(p, 0x80 + p);
 			assertEquals(0x80 + p, id.getByte(p));
 			exp[p] = (byte) (0x80 + p);
 			assertEquals(ObjectId.fromRaw(exp).name(), id.name());
 		}
 	}
 }