diff --git a/GUI/CMakeLists.txt b/GUI/CMakeLists.txt
index 56e7944..95d0397 100644
--- a/GUI/CMakeLists.txt
+++ b/GUI/CMakeLists.txt
@@ -10,6 +10,7 @@ set(gui_SRCS
 	mainwindow.cpp
 	misc.cpp
     extensions.cpp
+	tests.cpp
 	host/host.cc
 	host/textthread.cc
 	${RESOURCE_FILES}
diff --git a/GUI/tests.cpp b/GUI/tests.cpp
new file mode 100644
index 0000000..96be56d
--- /dev/null
+++ b/GUI/tests.cpp
@@ -0,0 +1,14 @@
+#include "extensions.h"
+#include "misc.h"
+
+static int TESTS = []
+{
+	assert(ParseCode("/HQ-c*C:C*1C@4AA:gdi.dll:GetTextOutA"));
+	assert(ParseCode("/HB4@0"));
+	assert(ParseCode("/RS*10@44"));
+	assert(!ParseCode("HQ@4"));
+	assert(!ParseCode("/RW@44"));
+	assert(!ParseCode("/HWG@33"));
+
+	return 0;
+}();
\ No newline at end of file