added more tests to core testing file

tests/util/CoreTest.cpp

@@ -4,6 +4,87 @@
 
 using namespace util;
 
+TEST_CASE("Test almostEqual", "[util][core]") {
+	SECTION("Numbers are approximately equal") {
+		REQUIRE(almostEqual(1.000000001, 1.000000002));
+		REQUIRE(almostEqual(1.0, 1.0, 1e-5));
+	}
+
+	SECTION("Numbers are not approximately equal") {
+		REQUIRE_FALSE(almostEqual(1.0, 1.1));
+		REQUIRE_FALSE(almostEqual(1.0, 1.0 + 1e-5, 1e-6));
+	}
+}
+
+TEST_CASE("Test Key Set", "[util][core]") {
+	SECTION("Extracting keys from a given map") {
+		std::unordered_map<std::string, int> inputtedMap = {
+			{"key1", 1},
+			{"key2", 2},
+			{"key3", 3}
+		};
+
+		auto keys = keySet(inputtedMap);
+
+		std::unordered_set<std::string> expectedSet = {"key1", "key2", "key3"};
+
+		REQUIRE(keys == expectedSet);
+	}
+
+	SECTION("Empty map results in empty set") {
+		std::unordered_map<std::string, int> emptyMap;
+		auto keys = keySet(emptyMap);
+		REQUIRE(keys.empty());
+	}
+}
+
+TEST_CASE("Test To String", "[util][core]") {
+	SECTION("Convert integers to strings") {
+		REQUIRE(to_string(69) == "69");
+		REQUIRE(to_string(-1) == "-1");
+	}
+
+	SECTION("Convert floats to strings") {
+		REQUIRE(to_string(3.14).substr(0,4) == "3.14");
+		REQUIRE(to_string(1e-6) == "0.000001");
+	}
+
+	SECTION("Convert booleans to strings") {
+		REQUIRE(to_string(true) == "true");
+		REQUIRE(to_string(false) == "false");
+	}
+}
+
+TEST_CASE("Test Freeze String", "[util][core]") {
+	SECTION("Converting std::string to frozen::string") {
+		std::string stdString = "Test";
+		auto frozenString = freezeStr(stdString);
+		REQUIRE(frozenString == frozen::string("Test"));
+	}
+
+	SECTION("Converting empty std::string results in empty frozen::string") {
+		std::string stdString;
+		auto frozenString = freezeStr(stdString);
+		REQUIRE(frozenString == frozen::string(""));
+	}
+}
+
+TEST_CASE("Test Pair To Tuple", "[util][core]") {
+	SECTION("Converting pair of integers to tuple") {
+		std::pair<int, int> pair = {0,1};
+		auto tuple = pairToTuple(pair);
+		REQUIRE(std::get<0>(tuple) == 0);
+		REQUIRE(std::get<1>(tuple) == 1);
+	}
+
+	SECTION("Converting mixed pair of string and integer to tuple") {
+		std::pair<std::string, int> pair = {"key0", 0};
+		auto tuple = pairToTuple(pair);
+		REQUIRE(std::get<0>(tuple) == "key0");
+		REQUIRE(std::get<1>(tuple) == 0);
+	}
+}
+
 TEST_CASE("Test RAIIHelper", "[util][core]") {
 	SECTION("Test RAIIHelper executes") {
 		bool called = false;