C++++

#include <stdexcept>
#include <iostream>

class Color{
public:
  Color(int r, int g, int b, int a);
  int get_red();
  int get_green();
  int get_blue();
  int get_alpha();

private:
  int red;
  int green;
  int blue;
  int alpha;
};

//------------------------------------------------------------------//

Color::Color(int r, int g, int b, int a):
  red{0}, green{0}, blue{0}, alpha{0}
{

}

int Color::get_red(){
  return red;
}

int Color::get_green(){
  return green;
}

int Color::get_blue(){
  return blue;
}

int Color::get_alpha(){
  return blue;
}

//------------------------------------------------------------------//

// add your Color class here
// you may but are not required to add a header file
// do not modify anything else

#define CATCH_CONFIG_MAIN
#include "catch.hpp"
#include <sstream>

TEST_CASE("Constructor")
{
  Color a{100,200,0,3};

  CHECK( a.get_red() == 0 );
  CHECK( a.get_green() == 0 );
  CHECK( a.get_blue() == 0 );
  CHECK( a.get_alpha() == 0 );
}


/*

std::string str(Color const& c)
{
  std::ostringstream oss;
  oss << c;
  return oss.str();
}

TEST_CASE("construction")
{
  CHECK_NOTHROW( (Color{1,255,0,255}) );
  CHECK_NOTHROW( (Color{100,200,0}) );
  CHECK_NOTHROW( (Color{75,140,60}) );
  CHECK_NOTHROW( (Color{128}) );
  CHECK_THROWS( (Color{256,-1,256,-1}) );
}

TEST_CASE("print")
{
  CHECK( str(Color{50,80,20,128}) == "{50, 80, 20}");
}

TEST_CASE("add color")
{
  Color a{100,200,0};
  Color b{50,80,120};
  Color c{75,140,60};

  REQUIRE( str(Color{50,80,20}) == "{50, 80, 20}");

  CHECK( str(a+b) == str(c) );
  CHECK( str(a+c) != str(b) );
  CHECK( str(b+c) != str(a) );
}

TEST_CASE("add grayscale")
{
  Color a{100,200,0};
  Color b{100,150,50};

  REQUIRE( str(Color{50,80,20}) == "{50, 80, 20}");

  CHECK( str(a+100) == str(b) );
  CHECK( str(100+a) == str(b) );
}

*/