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/*
* Copyright (C) 2010 Tommi Maekitalo
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* As a special exception, you may use this file as part of a free
* software library without restriction. Specifically, if other files
* instantiate templates or use macros or inline functions from this
* file, or you compile this file and link it with other files to
* produce an executable, this file does not by itself cause the
* resulting executable to be covered by the GNU General Public
* License. This exception does not however invalidate any other
* reasons why the executable file might be covered by the GNU Library
* General Public License.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <cxxtools/unit/testsuite.h>
#include <cxxtools/unit/registertest.h>
#include <tntdb/decimal.h>
#include <limits>
#include <math.h>
namespace
{
bool nearBy(long double v1, long double v2, long double e = 1e-6)
{
long double q = v1 / v2;
return q > 1 - e && q < 1 + e;
}
}
class TntdbDecimalTest : public cxxtools::unit::TestSuite
{
public:
TntdbDecimalTest()
: cxxtools::unit::TestSuite("decimal")
{
registerMethod("testDouble", *this, &TntdbDecimalTest::testDouble);
registerMethod("testFromString", *this, &TntdbDecimalTest::testFromString);
registerMethod("testToString", *this, &TntdbDecimalTest::testToString);
registerMethod("testInt", *this, &TntdbDecimalTest::testInt);
registerMethod("testCompare", *this, &TntdbDecimalTest::testCompare);
}
void testDouble()
{
tntdb::Decimal d;
d = tntdb::Decimal(45.6);
CXXTOOLS_UNIT_ASSERT(nearBy(d.getDouble(), 45.6));
d = tntdb::Decimal(-3.14);
CXXTOOLS_UNIT_ASSERT(nearBy(d.getDouble(), -3.14));
d = tntdb::Decimal(5e97);
CXXTOOLS_UNIT_ASSERT_EQUALS(d.getDouble(), 5e97);
d = tntdb::Decimal(-123e-154);
CXXTOOLS_UNIT_ASSERT(nearBy(d.getDouble(), -123e-154));
d = tntdb::Decimal(std::numeric_limits<double>::max());
CXXTOOLS_UNIT_ASSERT(nearBy(d.getDouble(), std::numeric_limits<double>::max()));
d = tntdb::Decimal(std::numeric_limits<double>::min());
CXXTOOLS_UNIT_ASSERT(nearBy(d.getDouble(), std::numeric_limits<double>::min()));
d = tntdb::Decimal(std::numeric_limits<double>::infinity());
CXXTOOLS_UNIT_ASSERT_EQUALS(d.getDouble(), std::numeric_limits<double>::infinity());
d = tntdb::Decimal(-std::numeric_limits<double>::infinity());
CXXTOOLS_UNIT_ASSERT_EQUALS(d.getDouble(), -std::numeric_limits<double>::infinity());
}
void testFromString()
{
tntdb::Decimal d;
d = tntdb::Decimal("45.6");
CXXTOOLS_UNIT_ASSERT(nearBy(d.getDouble(), 45.6));
d = tntdb::Decimal("-3.14");
CXXTOOLS_UNIT_ASSERT(nearBy(d.getDouble(), -3.14));
d = tntdb::Decimal("5e97");
CXXTOOLS_UNIT_ASSERT(nearBy(d.getDouble(), 5e97));
d = tntdb::Decimal("-123e-154");
CXXTOOLS_UNIT_ASSERT(nearBy(d.getDouble(), -123e-154));
d = tntdb::Decimal("12345678901234567890");
CXXTOOLS_UNIT_ASSERT_EQUALS(d.toStringFix(), "12345678901234567890");
d = tntdb::Decimal("inf");
CXXTOOLS_UNIT_ASSERT_EQUALS(d.getDouble(), std::numeric_limits<double>::infinity());
d = tntdb::Decimal("-inf");
CXXTOOLS_UNIT_ASSERT_EQUALS(d.getDouble(), -std::numeric_limits<double>::infinity());
d = tntdb::Decimal("nan");
CXXTOOLS_UNIT_ASSERT(d.getDouble() != d.getDouble());
d = tntdb::Decimal(" 1.00000000000000000000000000000000000000E+00 ");
CXXTOOLS_UNIT_ASSERT_EQUALS(d.getDouble(), 1);
d = tntdb::Decimal(" 1 ");
CXXTOOLS_UNIT_ASSERT_EQUALS(d.getDouble(), 1);
d = tntdb::Decimal(" 1.0 ");
CXXTOOLS_UNIT_ASSERT_EQUALS(d.getDouble(), 1);
d = tntdb::Decimal(" 1e0 ");
CXXTOOLS_UNIT_ASSERT_EQUALS(d.getDouble(), 1);
d = tntdb::Decimal(" 0.1e1 ");
CXXTOOLS_UNIT_ASSERT_EQUALS(d.getDouble(), 1);
d = tntdb::Decimal(" .00000000000000000000000000000000000000E+00");
CXXTOOLS_UNIT_ASSERT_EQUALS(d.getDouble(), 0);
d = tntdb::Decimal("0");
CXXTOOLS_UNIT_ASSERT_EQUALS(d.getDouble(), 0);
}
void testToString()
{
tntdb::Decimal d;
d = tntdb::Decimal("45.6");
CXXTOOLS_UNIT_ASSERT_EQUALS(d.toString(), "45.6");
CXXTOOLS_UNIT_ASSERT_EQUALS(d.toStringSci(), "4.56e1");
d = tntdb::Decimal("-3.14");
CXXTOOLS_UNIT_ASSERT_EQUALS(d.toString(), "-3.14");
CXXTOOLS_UNIT_ASSERT_EQUALS(d.toStringSci(), "-3.14e0");
d = tntdb::Decimal("5e97");
CXXTOOLS_UNIT_ASSERT_EQUALS(d.toString(), "5e97");
CXXTOOLS_UNIT_ASSERT_EQUALS(d.toStringSci(), "5e97");
d = tntdb::Decimal("-123e-154");
CXXTOOLS_UNIT_ASSERT_EQUALS(d.toString(), "-1.23e-152");
CXXTOOLS_UNIT_ASSERT_EQUALS(d.toStringSci(), "-1.23e-152");
d = tntdb::Decimal("12345678901234567890");
CXXTOOLS_UNIT_ASSERT_EQUALS(d.toStringFix(), "12345678901234567890");
CXXTOOLS_UNIT_ASSERT_EQUALS(d.toStringSci(), "1.234567890123456789e19");
d = tntdb::Decimal("1e23");
CXXTOOLS_UNIT_ASSERT_EQUALS(d.toStringFix(), "100000000000000000000000");
CXXTOOLS_UNIT_ASSERT_EQUALS(d.toStringSci(), "1e23");
CXXTOOLS_UNIT_ASSERT_EQUALS(d.toString(), "1e23");
d = tntdb::Decimal("-3e-23");
CXXTOOLS_UNIT_ASSERT_EQUALS(d.toStringFix(), "-0.00000000000000000000003");
CXXTOOLS_UNIT_ASSERT_EQUALS(d.toStringSci(), "-3e-23");
CXXTOOLS_UNIT_ASSERT_EQUALS(d.toString(), "-3e-23");
d = tntdb::Decimal("inf");
CXXTOOLS_UNIT_ASSERT_EQUALS(d.toString(), "inf");
d = tntdb::Decimal("-inf");
CXXTOOLS_UNIT_ASSERT_EQUALS(d.toString(), "-inf");
d = tntdb::Decimal("nan");
CXXTOOLS_UNIT_ASSERT_EQUALS(d.toString(), "nan");
}
void testInt()
{
tntdb::Decimal d;
long l;
d = tntdb::Decimal(100, 0);
l = d.getInteger<long>();
CXXTOOLS_UNIT_ASSERT_EQUALS(l, 100l);
d = tntdb::Decimal(std::numeric_limits<long>::max(), 0);
l = d.getInteger<long>();
CXXTOOLS_UNIT_ASSERT_EQUALS(l, std::numeric_limits<long>::max());
d = tntdb::Decimal(std::numeric_limits<long>::min(), 0);
l = d.getInteger<long>();
CXXTOOLS_UNIT_ASSERT_EQUALS(l, std::numeric_limits<long>::min());
d = tntdb::Decimal(-100, 0);
l = d.getInteger<long>();
CXXTOOLS_UNIT_ASSERT_EQUALS(l, -100l);
}
void testCompare()
{
tntdb::Decimal d0(45, 3);
tntdb::Decimal d1(450, 2);
tntdb::Decimal d2(449, 2);
tntdb::Decimal d3(-449, 2);
tntdb::Decimal d4(451, 2);
CXXTOOLS_UNIT_ASSERT(d0 == d1);
CXXTOOLS_UNIT_ASSERT(d0 != d2);
CXXTOOLS_UNIT_ASSERT(d1 != d2);
CXXTOOLS_UNIT_ASSERT(d3 != d0);
CXXTOOLS_UNIT_ASSERT(d3 != d1);
CXXTOOLS_UNIT_ASSERT(d3 != d2);
CXXTOOLS_UNIT_ASSERT(d2 < d0);
CXXTOOLS_UNIT_ASSERT(d2 < d1);
CXXTOOLS_UNIT_ASSERT(d3 < d0);
CXXTOOLS_UNIT_ASSERT(d3 < d1);
CXXTOOLS_UNIT_ASSERT(d3 < d2);
CXXTOOLS_UNIT_ASSERT(d2 < d4);
CXXTOOLS_UNIT_ASSERT(d0 > d2);
CXXTOOLS_UNIT_ASSERT(d1 > d2);
CXXTOOLS_UNIT_ASSERT(d0 > d3);
CXXTOOLS_UNIT_ASSERT(d1 > d3);
CXXTOOLS_UNIT_ASSERT(d2 > d3);
CXXTOOLS_UNIT_ASSERT(d2 <= d0);
CXXTOOLS_UNIT_ASSERT(d0 <= d1);
CXXTOOLS_UNIT_ASSERT(d2 <= d1);
CXXTOOLS_UNIT_ASSERT(d0 >= d2);
CXXTOOLS_UNIT_ASSERT(d0 >= d1);
CXXTOOLS_UNIT_ASSERT(d1 >= d2);
}
};
cxxtools::unit::RegisterTest<TntdbDecimalTest> register_TntdbDecimalTest;
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