add test for reading file from given string literal

tests/Base/UtilsTest.cpp

@@ -259,4 +259,10 @@ TEST_CASE("Split with non-null-terminated strings", "[Utils]")
 	input = { ",,,|", 3 };
 	result = Utils::Split(input, ',');
 	REQUIRE(result.empty());
+}
+
+TEST_CASE("Read file from string literal", "[Utils]")
+{
+	// all we need is to check if it compiles
+	REQUIRE(Utils::ReadFile("", true).Empty());
 }