UnitTests: Add build script and move current tests to "tests/Engine" directory (from "tests/Nazara")

Former-commit-id: 5639305bbdbb69ad6f6f282df6c6de930220b57f

tests/Engine/Core/StringStream.cpp

@@ -0,0 +1,71 @@
+#include <Nazara/Core/StringStream.hpp>
+#include <Catch/catch.hpp>
+
+SCENARIO("StringStream", "[CORE][STRINGSTREAM]")
+{
+	GIVEN("A string stream")
+	{
+		NzStringStream stringstream("default");
+
+		WHEN("We add bool and char")
+		{
+			stringstream << true;
+
+			char valueCharSigned = 64;
+			stringstream << valueCharSigned;
+			unsigned char valueCharUnsigned = 64;
+			stringstream << valueCharUnsigned;
+
+			REQUIRE(stringstream.ToString() == "defaulttrue@@");
+		}
+
+		AND_WHEN("We add short and int")
+		{
+			short valueShortSigned = -3;
+			stringstream << valueShortSigned;
+			unsigned short valueShortUnsigned = 3;
+			stringstream << valueShortUnsigned;
+
+			int valueIntSigned = -3;
+			stringstream << valueIntSigned;
+			unsigned int valueIntUnsigned = 3;
+			stringstream << valueIntUnsigned;
+
+			REQUIRE(stringstream.ToString() == "default-33-33");
+		}
+
+		AND_WHEN("We add long and long long")
+		{
+			long valueLongSigned = -3;
+			stringstream << valueLongSigned;
+			unsigned long valueLongUnsigned = 3;
+			stringstream << valueLongUnsigned;
+
+			long long valueLongLongSigned = -3;
+			stringstream << valueLongLongSigned;
+			unsigned long long valueLongLongUnsigned = 3;
+			stringstream << valueLongLongUnsigned;
+
+			REQUIRE(stringstream.ToString() == "default-33-33");
+		}
+
+		AND_WHEN("We add floating points")
+		{
+			stringstream << 3.f;
+			stringstream << 3.0;
+			stringstream << 3.0L;
+
+			REQUIRE(stringstream.ToString() == "default333");
+		}
+
+		AND_WHEN("We add string and pointer")
+		{
+			stringstream << "3";
+			stringstream << std::string("3");
+			stringstream << NzString("3");
+			stringstream << static_cast<void*>(nullptr);
+
+			REQUIRE(stringstream.ToString() == (NzString("default3330x") + NzString(sizeof(void*) * 2, "0")));
+		}
+	}
+}