testMPolynomialReader.cpp

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#include <iostream>
#include <iomanip>
#include <sstream>
#include "DGtal/base/Common.h"
#include "DGtal/math/MPolynomial.h"
#include "DGtal/io/readers/MPolynomialReader.h"
 
using namespace std;
using namespace DGtal;

// Functions for testing class MPolynomialReader.
 
bool testMPolynomialReader()
{
 
  MPolynomial<2,double,std::allocator<double> > Q1;
  MPolynomial<2,double,std::allocator<double> > Q2;
  MPolynomial<2,double,std::allocator<double> > Q = Q1 * Q2;
 
  typedef int Ring;
  MPolynomial<3,Ring,std::allocator<Ring> > P;
  MPolynomialReader<3,Ring> reader;
  string s1 = "1.5 X_0^2 X_2^3 X_1^5 * (4 X_0^3 + X_1^2)^2";
  //string s1 = "1.5 X_0^2 X_2^3 X_1^5";
  string s2 = "2 X_0^2 X_2 X_1^5";
  string s3 = s1 + " * " + s2;
  string s4 = "(" + s2 + ")^4 * (" + s1 + ")^1 - 3 X_2^3";
  string s5 = "x^3y+xz^3+y^3z+z^3+5z"; // Durchblick
  string s6 = "(y^2+z^2-1)^2 +(x^2+y^2-1)^3"; // Crixxi
  string s7 = "(y^2+z^2-1)^2 Abrahamovitch";
  bool ok1 = reader.read( P, s1.begin(), s1.end() ) == s1.end();
  trace.info() << "- Parsing " << s1 << " : " << ok1 << " " << P << std::endl;
  bool ok2 = reader.read( P, s2.begin(), s2.end() ) == s2.end();
  trace.info() << "- Parsing " << s2 << " : " << ok2 << " " << P << std::endl;
  bool ok3 = reader.read( P, s3.begin(), s3.end() ) == s3.end();
  trace.info() << "- Parsing " << s3 << " : " << ok3 << " " << P << std::endl;
  bool ok4 = reader.read( P, s4.begin(), s4.end() ) == s4.end();
  trace.info() << "- Parsing " << s4 << " : " << ok4 << " " << P << std::endl;
  bool ok5 = reader.read( P, s5.begin(), s5.end() ) == s5.end();
  trace.info() << "- Parsing " << s5 << " : " << ok5 << " " << P << std::endl;
  bool ok6 = reader.read( P, s6.begin(), s6.end() ) == s6.end();
  trace.info() << "- Parsing " << s6 << " : " << ok6 << " " << P << std::endl;
  bool ok7 = reader.read( P, s7.begin(), s7.end() ) == s7.end();
  trace.info() << "- Parsing " << s7 << " : " << ok7 << " " << P << std::endl;
 
  string s8 = "(zyx^2+x^2-1)^2 + xy AVERTY";
  std::istringstream sin( s8 );
  std::string other;
  sin >> P >> other;
  trace.info() << "- Read " << P << " and " << other << std::endl;
 
  return ok1 && ok2 && ok3 && ok4 && ok5 && ok6 && (!ok7);
}
 
bool testMPolynomialReader2()
{
 
  typedef double Ring;
  MPolynomial<3,Ring,std::allocator<Ring> > P1, P2, Q1, Q2, Q3, Q4;
  MPolynomialReader<3,Ring> reader;
  string s1 = "  x^4";
  string s2 = "1*y^4";
  string s3 = s1 + "+" + s2 + "-2";
  string s4 = "(" + s1 + ")+(" + s2 + ")-2";
  string s5 = "(" + s1 + ")+ " + s2 + " -2";
  bool ok1 = reader.read( P1, s1.begin(), s1.end() ) == s1.end();
  bool ok2 = reader.read( P2, s2.begin(), s2.end() ) == s2.end();
  Q1 = P1 + P2 - 2;
  bool ok3 = reader.read( Q2, s3.begin(), s3.end() ) == s3.end();
  bool ok4 = reader.read( Q3, s4.begin(), s4.end() ) == s4.end();
  bool ok4b= reader.read( Q4, s5.begin(), s5.end() ) == s5.end();
 
  trace.info() << "- Read Q1=" << Q1 << " from addition of monomials. " << std::endl;
  trace.info() << "- Read Q2=" << Q2 << " from string: " << s3 << std::endl;
  trace.info() << "- Read Q3=" << Q3 << " from string: " << s4 << std::endl;
  trace.info() << "- Read Q4=" << Q4 << " from string: " << s5 << std::endl;
  bool ok5 = Q1 == Q2;
  bool ok6 = Q1 == Q3;
  return ok1 && ok2 && ok3 && ok4 && ok5 && ok6 && ok4b;
}

// Standard services - public :
 
int main( int /*argc*/, char** /*argv*/ )
{
  trace.beginBlock ( "Testing class MPolynomialReader" );
 
  bool res = testMPolynomialReader()
    && testMPolynomialReader2();
  trace.emphase() << ( res ? "Passed." : "Error." ) << endl;
  trace.endBlock();
  return res ? 0 : 1;
}
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