Added mocks and stubs for cons_show

tests/ui/mock_ui.h

@@ -0,0 +1,14 @@
+#ifndef MOCK_UI_H
+#define MICK_UI_H
+
+#include <glib.h>
+#include <setjmp.h>
+#include <cmocka.h>
+
+void stub_cons_show(void);
+
+void mock_cons_show(void);
+void expect_cons_show(char *output);
+void expect_cons_show_calls(int n);
+
+#endif