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// vim: syntax=cpp
/*
 * Copyright (C) 2007-2010 Xagasoft, All rights reserved.
 *
 * This file is part of the libbu++ library and is released under the
 * terms of the license contained in the file LICENSE.
 */

#include "bu/sha1.h"

#include <stdlib.h>

suite Sha1
{
	test basics
	{
#define tryStr( a, b ) \
	{ Bu::Sha1 m; m.addData(a); unitTest( m.getHexResult() == b ); } (void)0
		tryStr("", "da39a3ee5e6b4b0d3255bfef95601890afd80709");
		tryStr("The quick brown fox jumps over the lazy dog",
			"2fd4e1c67a2d28fced849ee1bb76e7391b93eb12");
		tryStr("The quick brown fox jumps over the lazy cog",
			"de9f2c7fd25e1b3afad3e85a0bd17d9b100db4b3");
	}

	test twoChunks
	{
		Bu::Sha1 m;
		m.addData("The quick brown fo");
		m.addData("x jumps over the lazy dog");
		unitTest( m.getHexResult() == "2fd4e1c67a2d28fced849ee1bb76e7391b93eb12" );
	}

	test biggerBlocks
	{
		const char *sums[41] = {
			"2356aab95478d8e3c2c918e36f383e46d06154c7",
			"e3f663240c185a95111c4e00e20865dfbda390aa",
			"3f21881040b42f44476b610b6d2191f72afc1cb5",
			"493fe9da6de598c52ea56962b15ccc4405a8dfda",
			"4684ff568f7c1198a258eb04d88209f4feab4e05",
			"614101c1c164b8b6099f63165ea01078cbb6c77f",
			"393f1c1a9f6384653029ab807756e85a13147029",
			"fd66443d68f8b0508b4f125f2cff1192bfc01913",
			"1ef66120e530731194554bb2cd51293779a0bcc7",
			"d77e0eda0037f51b0b6c197371c5fd801cc0eede",
			"ce8b579bd3aa2ccac2e0205f52a8ed03777117ac",
			"d9e9d7fc411de2f89329ab758dc8f4302f80ff23"
		};

		char block[128];
		for( int i = 0; i < 128; i++ )
			block[i] = i*2;

		const char **curSum = sums;
		for( int j = 1; j < 4096; j*=2 )
		{
			/*
			Bu::File fOut("temp", Bu::File::WriteNew );
			for( int b = 0; b < j; b++ )
			{
				fOut.write( block, 128 );
			}
			fOut.close();
			system("sha1sum -b temp");
			*/
			Bu::Sha1 m;
			for( int b = 0; b < j; b++ )
			{
				m.addData( block, 128 );
			}
			unitTest( m.getHexResult() == *curSum );
			curSum++;
		} 
	}
}