1 files changed, 16 insertions, 0 deletions

diff --git a/tests/userprog/create-exists.c b/tests/userprog/create-exists.c
new file mode 100644
index 0000000..d395008
--- /dev/null
+++ b/tests/userprog/create-exists.c
@@ -0,0 +1,16 @@
+/* Verifies that trying to create a file under a name that
+   already exists will fail. */
+
+#include <syscall.h>
+#include "tests/lib.h"
+#include "tests/main.h"
+
+void
+test_main (void) 
+{
+  CHECK (create ("quux.dat", 0), "create quux.dat");
+  CHECK (create ("warble.dat", 0), "create warble.dat");
+  CHECK (!create ("quux.dat", 0), "try to re-create quux.dat");
+  CHECK (create ("baffle.dat", 0), "create baffle.dat");
+  CHECK (!create ("warble.dat", 0), "try to re-create quux.dat");
+}