Core: Add Uuid class

tests/Engine/Core/UuidTest.cpp

@@ -0,0 +1,60 @@
+#include <Nazara/Core/Uuid.hpp>
+#include <catch2/catch.hpp>
+#include <regex>
+#include <set>
+#include <unordered_set>
+
+SCENARIO("Uuid", "[CORE][UUID]")
+{
+	WHEN("Generating a null UUID")
+	{
+		Nz::Uuid nullUuid;
+		CHECK(nullUuid.IsNull());
+		CHECK(nullUuid.ToArray() == std::array<Nz::UInt8, 16>{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0});
+		CHECK(nullUuid.ToString() == "00000000-0000-0000-0000-000000000000");
+		CHECK(nullUuid.ToStringArray() == std::array<char, 37>{"00000000-0000-0000-0000-000000000000"});
+		CHECK(nullUuid == Nz::Uuid{});
+		CHECK(nullUuid >= Nz::Uuid{});
+		CHECK(nullUuid <= Nz::Uuid{});
+		CHECK_FALSE(nullUuid > Nz::Uuid{});
+		CHECK_FALSE(nullUuid < Nz::Uuid{});
+		CHECK(nullUuid != Nz::Uuid::Generate());
+	}
+
+	WHEN("Generating a UUID")
+	{
+		// https://stackoverflow.com/questions/136505/searching-for-uuids-in-text-with-regex
+		std::regex uuidRegex(R"(^\b[0-9a-f]{8}\b-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-\b[0-9a-f]{12}\b$)");
+
+		Nz::Uuid uuid = Nz::Uuid::Generate();
+		CHECK_FALSE(uuid.IsNull());
+		CHECK(std::regex_match(uuid.ToString(), uuidRegex));
+		CHECK(uuid == uuid);
+		CHECK(uuid == Nz::Uuid{uuid.ToArray()});
+		CHECK(uuid >= uuid);
+		CHECK(uuid <= uuid);
+		CHECK_FALSE(uuid > uuid);
+		CHECK_FALSE(uuid < uuid);
+	}
+
+	WHEN("Generating multiple UUID, they are unique")
+	{
+		std::set<Nz::Uuid> uuidSet;
+		std::unordered_set<Nz::Uuid> uuidUnorderedset;
+
+		auto InsertUniqueUuid = [](auto& container, const Nz::Uuid& uuid)
+		{
+			auto it = container.find(uuid);
+			REQUIRE(it == container.end());
+			container.insert(uuid);
+		};
+
+		for (std::size_t i = 0; i < 1'000; ++i)
+		{
+			auto uuid = Nz::Uuid::Generate();
+
+			InsertUniqueUuid(uuidSet, uuid);
+			InsertUniqueUuid(uuidUnorderedset, uuid);
+		}
+	}
+}