NonRandomCounter_test.cc File Reference

Unit test for NonRandomCounter random engine. More...

#include <boost/test/unit_test.hpp>
#include "icarusalg/Utilities/NonRandomCounter.h"

Go to the source code of this file.

Macros
#define	BOOST_TEST_MODULE   NonRandomCounterTest

Functions
void	Test ()
	BOOST_AUTO_TEST_CASE (TestCase)

Detailed Description

Unit test for NonRandomCounter random engine.

Date

February 14, 2020

Author

Gianluca Petrillo (petri.nosp@m.llo@.nosp@m.slac..nosp@m.stan.nosp@m.ford..nosp@m.edu)

See Also

icarusalg/Utilities/NonRandomCounter.h

Definition in file NonRandomCounter_test.cc.

Macro Definition Documentation

#define BOOST_TEST_MODULE   NonRandomCounterTest

Definition at line 10 of file NonRandomCounter_test.cc.

Function Documentation

BOOST_AUTO_TEST_CASE

(

TestCase

)

Definition at line 66 of file NonRandomCounter_test.cc.

                                 {
  
  Test();
  
} // BOOST_AUTO_TEST_CASE( TestCase )

void Test

(

)

Definition at line 18 of file NonRandomCounter_test.cc.

            {
  
  constexpr std::size_t N = 1024U;
  constexpr long seed = 3U;
  
  util::NonRandomCounter engine { seed };
  
  std::cout << "engine { " << seed << " }: ";
  engine.showStatus();
  
  BOOST_CHECK_EQUAL(engine.name(), "NonRandomCounter");
  
  // test that the numbers are growing
  std::array<double, N> numbers;
  engine.flatArray(numbers.size(), numbers.data());
  std::cout << "\nengine.flatArray(" << numbers.size() << ", "
    << ((void*) numbers.data()) << ") => ";
  engine.showStatus();
  
  for (std::size_t i = 1U; i < N; ++i)
    BOOST_CHECK_LT(numbers[i - 1U], numbers[i]);
  
  // test that the numbers are reproducible
  engine.setSeed(seed, 0);
  std::cout << "\nengine.setSeed(" << seed << ") => ";
  engine.showStatus();
  
  for (double const expected: numbers)
    BOOST_CHECK_EQUAL(engine.flat(), expected); // same math, same result
  std::cout << "\nengine.flat() x " << numbers.size() << " => ";
  engine.showStatus();
  
  // test the other way to set a seed
  engine.setSeeds(&seed, 1);
  std::cout << "\nengine.setSeeds(" << ((void*) &seed) << ", 1) => ";
  engine.showStatus();
  
  for (double const expected: numbers)
    BOOST_CHECK_EQUAL(engine.flat(), expected); // same math, same result
  std::cout << "\nengine.flat() x " << numbers.size() << " => ";
  engine.showStatus();
  
} // Test()