byteordervaluestest.cpp

在Linux下做的QuadTree的程序

// $Id: ByteOrderValuesTest.cpp 1820 2006-09-06 16:54:23Z mloskot $
// 
// Test Suite for geos::io::ByteOrderValues 

// TUT
#include <tut.h>
// GEOS
#include <geos/io/ByteOrderValues.h>
#include <geos/platform.h> // for int64
#include <sstream>
#include <memory>

namespace tut
{
	//
	// Test Group
	//

	// dummy data, not used
	struct test_byteordervalues_data
	{
	};

	typedef test_group<test_byteordervalues_data> group;
	typedef group::object object;

	group test_byteordervalues_group("geos::io::ByteOrderValues");


	//
	// Test Cases
	//

	// 1 - Read/write an int 
	template<>
	template<>
	void object::test<1>()
	{         
		using geos::io::ByteOrderValues;

		unsigned char buf[4];
		int in = 1;
		int out;

		ByteOrderValues::putInt(in, buf, ByteOrderValues::ENDIAN_BIG);
		ensure("putInt big endian[0]", buf[0] == 0);
		ensure("putInt big endian[1]", buf[1] == 0);
		ensure("putInt big endian[2]", buf[2] == 0);
		ensure("putInt big endian[3]", buf[3] == 1);

		out = ByteOrderValues::getInt(buf,
				ByteOrderValues::ENDIAN_BIG);
		ensure_equals("getInt big endian", out, in);

		ByteOrderValues::putInt(1, buf, ByteOrderValues::ENDIAN_LITTLE);
		ensure("putInt little endian[0]", buf[0] == 1);
		ensure("putInt little endian[1]", buf[1] == 0);
		ensure("putInt little endian[2]", buf[2] == 0);
		ensure("putInt little endian[3]", buf[3] == 0);

		out = ByteOrderValues::getInt(buf,
				ByteOrderValues::ENDIAN_LITTLE);
		ensure_equals("getInt little endian", out, in);
	}

	// 2 - Read/write a double
	template<>
	template<>
	void object::test<2>()
	{         
		using geos::io::ByteOrderValues;

		unsigned char buf[8];
		double in = 2;
		double out;

		ByteOrderValues::putDouble(in, buf,
				ByteOrderValues::ENDIAN_BIG);
		ensure("putDouble big endian[0]", buf[0] == 64);
		ensure("putDouble big endian[1]", buf[1] == 0);
		ensure("putDouble big endian[2]", buf[2] == 0);
		ensure("putDouble big endian[3]", buf[3] == 0);
		ensure("putDouble big endian[4]", buf[4] == 0);
		ensure("putDouble big endian[5]", buf[5] == 0);
		ensure("putDouble big endian[6]", buf[6] == 0);
		ensure("putDouble big endian[7]", buf[7] == 0);

		out = ByteOrderValues::getDouble(buf,
				ByteOrderValues::ENDIAN_BIG);
		ensure_equals("getDouble big endian", out, in);

		ByteOrderValues::putDouble(in, buf,
				ByteOrderValues::ENDIAN_LITTLE);
		ensure("putDouble little endian[0]", buf[0] == 0);
		ensure("putDouble little endian[1]", buf[1] == 0);
		ensure("putDouble little endian[2]", buf[2] == 0);
		ensure("putDouble little endian[3]", buf[3] == 0);
		ensure("putDouble little endian[4]", buf[4] == 0);
		ensure("putDouble little endian[5]", buf[5] == 0);
		ensure("putDouble little endian[6]", buf[6] == 0);
		ensure("putDouble little endian[7]", buf[7] == 64);

		out = ByteOrderValues::getDouble(buf,
				ByteOrderValues::ENDIAN_LITTLE);
		ensure_equals("getDouble little endian", out, in);
	}

	// 3 - Read/write a long
	template<>
	template<>
	void object::test<3>()
	{         
		using geos::io::ByteOrderValues;

		unsigned char buf[8];
		long in = 2;
		long out;

		ByteOrderValues::putLong(in, buf,
				ByteOrderValues::ENDIAN_BIG);
		ensure("putLong big endian[0]", buf[0] == 0);
		ensure("putLong big endian[1]", buf[1] == 0);
		ensure("putLong big endian[2]", buf[2] == 0);
		ensure("putLong big endian[3]", buf[3] == 0);
		ensure("putLong big endian[4]", buf[4] == 0);
		ensure("putLong big endian[5]", buf[5] == 0);
		ensure("putLong big endian[6]", buf[6] == 0);
		ensure("putLong big endian[7]", buf[7] == 2);

		out = ByteOrderValues::getLong(buf,
				ByteOrderValues::ENDIAN_BIG);
		ensure_equals("getLong big endian", out, in);

		ByteOrderValues::putLong(in, buf,
				ByteOrderValues::ENDIAN_LITTLE);
		ensure("putLong little endian[0]", buf[0] == 2);
		ensure("putLong little endian[1]", buf[1] == 0);
		ensure("putLong little endian[2]", buf[2] == 0);
		ensure("putLong little endian[3]", buf[3] == 0);
		ensure("putLong little endian[4]", buf[4] == 0);
		ensure("putLong little endian[5]", buf[5] == 0);
		ensure("putLong little endian[6]", buf[6] == 0);
		ensure("putLong little endian[7]", buf[7] == 0);

		out = ByteOrderValues::getLong(buf,
				ByteOrderValues::ENDIAN_LITTLE);
		ensure_equals("getLong little endian", out, in);
	}


} // namespace tut