Print pairs in tests. Add new tests for unimplemented functions

tests/tests_main.cpp

@@ -0,0 +1,44 @@
+#define CATCH_CONFIG_MAIN
+#include "catch.hpp"
+#include <sstream>
+#include <functions.h>
+
+// For some retarted reason, I need to implement the printing of pairs, otherwise in the test outputs they show up as {?}
+namespace Catch {
+	template<>
+	struct StringMaker<std::pair<int, int>> {
+		static std::string convert(std::pair<int, int> const& p){
+			std::stringstream ss;
+			ss << "{ " << p.first << ", " << p.second << " }";
+			return ss.str();
+		}
+	};
+}
+
+
+TEST_CASE("Test convert method to go from X and Y to board position", "[pair_to_pos]"){
+	CHECK(pair_to_pos(std::make_pair(3, 5)) == Position::C3);
+	CHECK(pair_to_pos(std::make_pair(7, 0)) == Position::H8);
+	CHECK(pair_to_pos(std::make_pair(0, 0)) == Position::A8);
+	CHECK(pair_to_pos(std::make_pair(7, 7)) == Position::H1);
+	CHECK_THROWS(pair_to_pos(std::make_pair(8, 2)));
+	CHECK_THROWS(pair_to_pos(std::make_pair(-1, 1)));
+}
+
+TEST_CASE("Test convert method to go from a board position to an x and y", "[pos_to_pair]"){
+	CHECK(pos_to_pair(Position::A3) == std::make_pair(0, 5));
+	CHECK(pos_to_pair(Position::B2) == std::make_pair(1, 1));
+	CHECK(pos_to_pair(Position::H8) == std::make_pair(0, 7));
+}
+
+TEST_CASE("Test what pieces may move where functon", "[get_possible_movers]"){
+	std::vector<Position> H1_possible_movers = {Position::G1, Position::G2};
+	CHECK(get_possible_movers(Position::H3, DEFAULT_BOARD) == H1_possible_movers);
+}
+
+TEST_CASE("Test where this piece may move to", "[get_possible_moves]"){
+	std::vector<Position> black_right_knight_possible_moves = {Position::H3, Position::F3};
+	std::vector<Position> white_a_pawn_possible_moves = {Position::A6};
+	CHECK(get_possible_moves(Position::G1, DEFAULT_BOARD) == black_right_knight_possible_moves);
+	CHECK(get_possible_moves(Position::A7, DEFAULT_BOARD) == white_a_pawn_possible_moves);
+}