mcl/tests/test_swap.cpp

#include <catch2/catch_test_macros.hpp>

#include "swap.hpp"


TEST_CASE("Swap value with references", "[swap]") {
	int a=5, b=3;

	mcl::swap(a, b);

	REQUIRE( a == 3 );
	REQUIRE( b == 5 );
}


TEST_CASE("Swap value with points", "[swap]") {
	int a=5;
	int b=3;
	int* x=&a;
	int* y=&b;

	mcl::swap(x, y);

	REQUIRE( a == 3 );
	REQUIRE( b == 5 );

	REQUIRE( *x == 3 );
	REQUIRE( *y == 5 );
}


TEST_CASE("Swap points with points", "[swap]") {
	int a=5, b=3;
	int* x=&a;
	int* y=&b;

	mcl::swap(&x, &y);

	REQUIRE( a == 5 );
	REQUIRE( b == 3 );

	REQUIRE( *x == 3 );
	REQUIRE( *y == 5 );
}