diff --git a/autotest/File/File.cpp b/autotest/File/File.cpp
new file mode 100644
index 000000000..303f979a2
--- /dev/null
+++ b/autotest/File/File.cpp
@@ -0,0 +1,18 @@
+#include <Core/Core.h>
+
+using namespace Upp;
+
+CONSOLE_APP_MAIN
+{
+	String p = GetExeDirFile("test.txt");
+	FileOut out(p);
+	DDUMP((bool)out);
+	DDUMP((bool)out.IsError());
+	FileOut out2(p);
+	DDUMP((bool)out2);
+	DDUMP((bool)out2.IsError());
+	
+	FileIn in(GetExeDirFile("does_not_exist.file123"));
+	DDUMP((bool)in);
+	DDUMP(in.IsError());
+}
diff --git a/autotest/File/File.upp b/autotest/File/File.upp
new file mode 100644
index 000000000..66f2a842a
--- /dev/null
+++ b/autotest/File/File.upp
@@ -0,0 +1,9 @@
+uses
+	Core;
+
+file
+	File.cpp;
+
+mainconfig
+	"" = "";
+