testFFTDataContainerAlgorithm.cc

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#include <iostream>
#include <vector>

#include <boost/rational.hpp>

#include <tst/Verify.h>

#include <utl/AugerException.h>
#include <utl/AugerUnits.h>
#include <utl/FFTDataContainerAlgorithm.h>

#include <cppunit/extensions/HelperMacros.h>

using namespace std;
using namespace utl;
using namespace tst;

class testFFTDataContainerAlgorithm : public CppUnit::TestFixture {

  CPPUNIT_TEST_SUITE(testFFTDataContainerAlgorithm);
//CPPUNIT_TEST(testTimeShifting);
//CPPUNIT_TEST(testUpsampling);
//CPPUNIT_TEST(testResampling);
//CPPUNIT_TEST(testThinOut);
  CPPUNIT_TEST(testDoubleToRational);
  CPPUNIT_TEST_SUITE_END();

private:

public:
  void
  setUp()
  {
  }

  void
  tearDown()
  {
  }

/*void
  testTimeShifting()
  {
    //#warning Tests for FFTDataContainerAlgorithm have yet to be implemented
  }

  void
  testUpsampling()
  {
    //#warning Tests for FFTDataContainerAlgorithm have yet to be implemented
  }

  void
  testResampling()
  {
    //#warning Tests for FFTDataContainerAlgorithm have yet to be implemented
  }

  void
  testThinOut()
  {
    //#warning Tests for FFTDataContainerAlgorithm have yet to be implemented
  } */

  void
  testDoubleToRational()
  {
    typedef boost::rational<long> rational;

    vector<double> doubles;
    vector<rational> rationals;

    // push value pairs to be tested into the vectors
    doubles.push_back(0.3);
    rationals.push_back(rational(3,10));

    doubles.push_back(1./3.);
    rationals.push_back(rational(1,3));

    doubles.push_back(1./7.);
    rationals.push_back(rational(1,7));

    doubles.push_back(0.101);
    rationals.push_back(rational(101,1000));

    doubles.push_back(0.123401); // four significant digits plus a rounding error
    rationals.push_back(rational(1234,10000));

    // compare the converted rationals with the true values
    for (unsigned int i=0; i<doubles.size(); ++i)
      CPPUNIT_ASSERT(Verify<Equal>(rationals[i],FFTDataContainerAlgorithm::ConvertDecimalDoubleToRational(doubles[i], false)));
  }


};

CPPUNIT_TEST_SUITE_REGISTRATION(testFFTDataContainerAlgorithm);

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