diff --git a/pubsub/test-pipe-read.c b/pubsub/test-pipe-read.c
index a2cb78f..7ab462c 100644
--- a/pubsub/test-pipe-read.c
+++ b/pubsub/test-pipe-read.c
@@ -42,6 +42,7 @@ main(int argc, char **argv)
         struct pubsub_msg m;
         pubsubd_msg_unserialize (&m, buf, msize);
         pubsubd_msg_print (&m);
+        pubsubd_msg_free (&m);
         sleep (1);
     }
 
diff --git a/pubsub/test-pipe-write.c b/pubsub/test-pipe-write.c
new file mode 100644
index 0000000..3520928
--- /dev/null
+++ b/pubsub/test-pipe-write.c
@@ -0,0 +1,58 @@
+#include "../lib/pubsubd.h"
+#include <stdlib.h>
+
+#define CHAN        "chan1"
+#define MESSAGE     "coucou"
+
+void
+ohshit(int rvalue, const char* str) {
+    fprintf(stderr, "%s\n", str);
+    exit(rvalue);
+}
+
+void usage (char **argv) {
+    fprintf (stderr, "usage: %s path times\n", argv[0]);
+    fprintf (stderr, "ex: %s /tmp/pipe 5  => you will write 5 times\n", argv[0]);
+    exit (1);
+}
+
+int
+main(int argc, char **argv)
+{
+
+    if (argc != 3)
+        usage (argv);
+
+    char *path = argv[1];
+    int nb = atoi (argv[2]);
+
+    printf ("Writing on %s %d times.\n", path, nb);
+
+    char *buf = NULL;
+    size_t msize = 0;
+
+    int ret = 0;
+
+    while (nb--) {
+        struct pubsub_msg msg;
+        memset (&msg, 0, sizeof (struct pubsub_msg));
+        msg.type = PUBSUB_TYPE_MESSAGE;
+        msg.chan = malloc (strlen (CHAN) + 1);
+        strncpy ((char *)msg.chan, CHAN, strlen (CHAN) + 1);
+        msg.chanlen = strlen (CHAN) + 1;
+        msg.data = malloc (strlen (MESSAGE) + 1);
+        strncpy ((char *)msg.data, MESSAGE, strlen (CHAN) + 1);
+        msg.datalen = strlen (MESSAGE) + 1;
+
+        pubsubd_msg_serialize (&msg, &buf, &msize);
+        pubsubd_msg_print (&msg);
+        pubsubd_msg_free (&msg);
+        ret = file_write (path, buf, msize);
+        if (ret != msize) {
+            fprintf (stderr, "msg not written\n");
+        }
+        sleep (1);
+    }
+
+    return EXIT_SUCCESS;
+}