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/********************* */
/*! \file real_algebraic_number_black.h
** \verbatim
** Top contributors (to current version):
** Gereon Kremer
** This file is part of the CVC4 project.
** Copyright (c) 2009-2020 by the authors listed in the file AUTHORS
** in the top-level source directory and their institutional affiliations.
** All rights reserved. See the file COPYING in the top-level source
** directory for licensing information.\endverbatim
**
** \brief Black box testing of CVC4::RealAlgebraicNumber.
**
** Black box testing of CVC4::RealAlgebraicNumber.
**/
#include <cxxtest/TestSuite.h>
#include "util/real_algebraic_number.h"
using namespace CVC4;
using namespace std;
#ifndef CVC4_POLY_IMP
#error "This unit test should only be enabled for CVC4_POLY_IMP"
#endif
class RealAlgebraicNumberBlack : public CxxTest::TestSuite
{
public:
void testCreation()
{
TS_ASSERT(isZero(RealAlgebraicNumber()));
TS_ASSERT(isOne(RealAlgebraicNumber(Integer(1))));
TS_ASSERT(!isOne(RealAlgebraicNumber(Rational(2))));
RealAlgebraicNumber sqrt2({-2, 0, 1}, 1, 2);
TS_ASSERT(RealAlgebraicNumber(Integer(1)) < sqrt2);
TS_ASSERT(sqrt2 < RealAlgebraicNumber(Integer(2)));
}
void testComparison()
{
RealAlgebraicNumber msqrt3({-3, 0, 1}, -2, -1);
RealAlgebraicNumber msqrt2({-2, 0, 1}, -2, -1);
RealAlgebraicNumber zero;
RealAlgebraicNumber sqrt2({-2, 0, 1}, 1, 2);
RealAlgebraicNumber sqrt3({-3, 0, 1}, 1, 2);
TS_ASSERT(msqrt3 < msqrt2);
TS_ASSERT(msqrt3 < zero);
TS_ASSERT(msqrt3 < sqrt2);
TS_ASSERT(msqrt3 < sqrt3);
TS_ASSERT(msqrt2 < zero);
TS_ASSERT(msqrt2 < sqrt2);
TS_ASSERT(msqrt2 < sqrt3);
TS_ASSERT(zero < sqrt2);
TS_ASSERT(zero < sqrt3);
TS_ASSERT(sqrt2 < sqrt3);
}
void testSgn()
{
RealAlgebraicNumber msqrt2({-2, 0, 1}, -2, -1);
RealAlgebraicNumber zero;
RealAlgebraicNumber sqrt2({-2, 0, 1}, 1, 2);
TS_ASSERT_EQUALS(sgn(msqrt2), -1);
TS_ASSERT_EQUALS(sgn(zero), 0);
TS_ASSERT_EQUALS(sgn(sqrt2), 1);
}
void testArithmetic()
{
RealAlgebraicNumber msqrt2({-2, 0, 1}, -2, -1);
RealAlgebraicNumber zero;
RealAlgebraicNumber sqrt2({-2, 0, 1}, 1, 2);
TS_ASSERT_EQUALS(msqrt2 + sqrt2, zero);
TS_ASSERT_EQUALS(-msqrt2, sqrt2);
TS_ASSERT_EQUALS(-msqrt2 + sqrt2, sqrt2 + sqrt2);
TS_ASSERT_EQUALS(msqrt2 * sqrt2, RealAlgebraicNumber(Integer(-2)));
}
};
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