diff --git a/tests/build.sh b/tests/build.sh
new file mode 100755
index 0000000..72b2e2f
--- /dev/null
+++ b/tests/build.sh
@@ -0,0 +1,12 @@
+#!/bin/sh
+
+nontapmsg() {
+	echo $*
+}
+
+for i in *.c
+do
+	f=`echo $i | sed "s/.c$//"`
+	nontapmsg "compiling $f"
+	gcc $f.c -Wall -Wextra -Wno-unused-parameter -g -o $f.bin -I../src -L../ -lipc
+done
diff --git a/tests/func_01_connection_establishment.c b/tests/func_01_connection_establishment.c
new file mode 100644
index 0000000..21730e6
--- /dev/null
+++ b/tests/func_01_connection_establishment.c
@@ -0,0 +1,31 @@
+#include "../src/ipc.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define SERVICE_NAME "pong"
+
+int main(int argc, char * argv[], char **env)
+{
+	enum ipc_errors ret;
+	SECURE_DECLARATION(struct ipc_connection_info,service);
+	SECURE_DECLARATION(struct ipc_event, event);
+	
+	ret = ipc_connection (env, &service, SERVICE_NAME);
+	if (ret != IPC_ERROR_NONE) {
+		return EXIT_FAILURE;
+	}
+
+	// ret = ipc_wait_event (services, struct ipc_event *event);
+	// if (ret != IPC_ERROR_NONE) {
+	// 	return EXIT_FAILURE;
+	// }
+
+	ret = ipc_close (&service);
+	if (ret != IPC_ERROR_NONE) {
+		return EXIT_FAILURE;
+	}
+
+    return EXIT_SUCCESS;
+}
diff --git a/tests/func_01_connection_establishmentd.c b/tests/func_01_connection_establishmentd.c
new file mode 100644
index 0000000..0968964
--- /dev/null
+++ b/tests/func_01_connection_establishmentd.c
@@ -0,0 +1,56 @@
+#include "../src/ipc.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define SERVICE_NAME "pong"
+
+int main(int argc, char * argv[], char **env)
+{
+	enum ipc_errors ret;
+	SECURE_DECLARATION(struct ipc_connection_info,srv);
+
+	printf ("func 01 - server init...\n");
+	ret = ipc_server_init (env, &srv, SERVICE_NAME);
+	if (ret != IPC_ERROR_NONE) {
+		return EXIT_FAILURE;
+	}
+	printf ("func 01 - server init ok\n");
+
+	SECURE_DECLARATION(struct ipc_connection_infos, clients);
+	SECURE_DECLARATION(struct ipc_event,event);
+
+	printf ("func 01 - service polling...\n");
+	// listen only for a single client
+	ret = ipc_wait_event (&clients, &srv, &event);
+
+	switch (event.type) {
+		case IPC_EVENT_TYPE_CONNECTION :
+			{
+				printf ("ok - connection establishment\n");
+				break;
+			}
+		case IPC_EVENT_TYPE_NOT_SET :
+		case IPC_EVENT_TYPE_ERROR :
+		case IPC_EVENT_TYPE_EXTRA_SOCKET :
+		case IPC_EVENT_TYPE_DISCONNECTION :
+		case IPC_EVENT_TYPE_MESSAGE :
+		default :
+			printf ("not ok - should not happen\n");
+			exit (EXIT_FAILURE);
+			break;
+	}
+
+	printf ("func 01 - closing clients...\n");
+	ipc_connections_free (&clients);
+	printf ("func 01 - closing server...\n");
+	ret = ipc_server_close(&srv);
+	if (ret != IPC_ERROR_NONE)
+	{
+		const char * error_explanation = ipc_errors_get (ret);
+		printf ("ipc_server_close: %s\n", error_explanation);
+	}
+
+    return EXIT_SUCCESS;
+}
diff --git a/tests/func_02_pong.c b/tests/func_02_pong.c
new file mode 100644
index 0000000..96c5712
--- /dev/null
+++ b/tests/func_02_pong.c
@@ -0,0 +1,147 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "../src/ipc.h"
+
+#define MSG "coucou"
+#define SERVICE_NAME "pong"
+
+#define PRINTERR(ret,msg) {\
+	const char * err = ipc_errors_get (ret);\
+	fprintf(stderr, "error while %s: %s\n", msg, err);\
+}
+
+void non_interactive (char *env[])
+{
+	enum ipc_errors ret;
+    struct ipc_message m;
+    memset (&m, 0, sizeof (struct ipc_message));
+	SECURE_DECLARATION(struct ipc_connection_info, srv);
+
+    // init service
+	ret = ipc_connection (env, &srv, SERVICE_NAME);
+    if (ret != IPC_ERROR_NONE) {
+		PRINTERR(ret, "application connection");
+        exit (EXIT_FAILURE);
+    }
+
+    printf ("msg to send (%ld): %.*s\n", (ssize_t) strlen(MSG) +1, (int) strlen(MSG), MSG);
+    ret = ipc_message_format_data (&m, /* type */ 'a', MSG, (ssize_t) strlen(MSG) +1);
+	if (ret != IPC_ERROR_NONE) {
+		PRINTERR(ret, "message format data");
+		exit (EXIT_FAILURE);
+	}
+
+    // printf ("msg to send in the client: ");
+    // ipc_message_print (&m);
+	ret = ipc_write (&srv, &m);
+    if (ret != IPC_ERROR_NONE) {
+		PRINTERR(ret, "application write");
+        exit (EXIT_FAILURE);
+    }
+    ipc_message_empty (&m);
+
+	ret = ipc_read (&srv, &m);
+    if (ret != IPC_ERROR_NONE) {
+		PRINTERR(ret, "application read");
+        exit (EXIT_FAILURE);
+    }
+
+    printf ("msg recv: %s\n", m.payload);
+    ipc_message_empty (&m);
+
+	ret = ipc_close (&srv);
+    if (ret != IPC_ERROR_NONE) {
+		PRINTERR(ret, "application close");
+        exit (EXIT_FAILURE);
+    }
+}
+
+void interactive (char *env[])
+{
+	enum ipc_errors ret;
+	SECURE_DECLARATION(struct ipc_connection_info, srv);
+
+    // index and version should be filled
+    srv.index = 0;
+    srv.version = 0;
+
+    // init service
+	ret = ipc_connection (env, &srv, SERVICE_NAME);
+    if (ret != IPC_ERROR_NONE) {
+		PRINTERR(ret, "application connection");
+        exit (EXIT_FAILURE);
+    }
+
+	SECURE_DECLARATION(struct ipc_event, event);
+	SECURE_DECLARATION(struct ipc_connection_infos, services);
+
+	ipc_add (&services, &srv);
+
+    while (1) {
+        printf ("msg to send: ");
+        fflush (stdout);
+		ret = ipc_wait_event (&services, NULL, &event);
+
+		if (ret != IPC_ERROR_NONE) {
+			PRINTERR(ret, "application peek event");
+			exit (EXIT_FAILURE);
+		}
+
+		switch (event.type) {
+			case IPC_EVENT_TYPE_EXTRA_SOCKET:
+				{
+					struct ipc_message *m = event.m;
+					if ( m->length == 0 || strncmp (m->payload, "exit", 4) == 0) {
+
+						ipc_message_empty (m);
+						free (m);
+
+						ipc_connections_free (&services);
+
+						ret = ipc_close (&srv);
+						if (ret != IPC_ERROR_NONE) {
+							PRINTERR(ret, "application close");
+							exit (EXIT_FAILURE);
+						}
+
+						exit (EXIT_SUCCESS);
+					}
+
+					ret = ipc_write (&srv, m);
+					if (ret != IPC_ERROR_NONE) {
+						PRINTERR(ret, "application write");
+						exit (EXIT_FAILURE);
+					}
+				}
+				break;
+			case IPC_EVENT_TYPE_MESSAGE:
+				{
+					struct ipc_message *m = event.m;
+					printf ("msg recv: %.*s", m->length, m->payload);
+				};
+				break;
+			case IPC_EVENT_TYPE_DISCONNECTION:
+			case IPC_EVENT_TYPE_NOT_SET:
+			case IPC_EVENT_TYPE_CONNECTION:
+			case IPC_EVENT_TYPE_ERROR:
+			default :
+				fprintf (stderr, "should not happen, event type %d\n", event.type);
+		}
+    }
+}
+
+int main (int argc, char *argv[], char *env[])
+{
+	argc = argc; // warnings
+	argv = argv; // warnings
+
+    if (argc == 1)
+        non_interactive (env);
+    else
+        interactive (env);
+
+    return EXIT_SUCCESS;
+}
diff --git a/tests/func_02_pongd.c b/tests/func_02_pongd.c
new file mode 100644
index 0000000..9252258
--- /dev/null
+++ b/tests/func_02_pongd.c
@@ -0,0 +1,163 @@
+#include "../src/ipc.h"
+#include <signal.h>
+
+#include <sys/socket.h>
+#include <sys/un.h>
+#include <unistd.h>
+
+#define PONGD_SERVICE_NAME "pong"
+
+#define PRINTERR(ret,msg) {\
+	const char * err = ipc_errors_get (ret);\
+	fprintf(stderr, "error while %s: %s\n", msg, err);\
+}
+
+int cpt = 0;
+
+struct ipc_connection_info *srv = 0;
+struct ipc_connection_infos *clients;
+
+
+void main_loop ()
+{
+    enum ipc_errors ret = 0; 
+
+	clients = malloc (sizeof (struct ipc_connection_infos));
+	memset(clients, 0, sizeof(struct ipc_connection_infos));
+
+	SECURE_DECLARATION(struct ipc_event,event);
+
+    while(1) {
+		// ipc_wait_event provides one event at a time
+		// warning: event->m is free'ed if not NULL
+		ret = ipc_wait_event (clients, srv, &event);
+		if (ret != IPC_ERROR_NONE && ret != IPC_ERROR_CLOSED_RECIPIENT) {
+			PRINTERR(ret,"service poll event");
+
+			// the application will shut down, and close the service
+			ret = ipc_server_close (srv);
+			if (ret != IPC_ERROR_NONE) {
+				PRINTERR(ret,"server close");
+			}
+			exit (EXIT_FAILURE);
+		}
+
+		switch (event.type) {
+			case IPC_EVENT_TYPE_CONNECTION:
+				{
+					cpt++;
+					printf ("connection: %d clients connected\n", cpt);
+					printf ("new client has the fd %d\n", ((struct ipc_connection_info*) event.origin)->fd);
+				};
+				break;
+			case IPC_EVENT_TYPE_DISCONNECTION:
+				{
+					cpt--;
+					printf ("disconnection: %d clients remaining\n", cpt);
+
+					// free the ipc_connection_info structure
+					free (event.origin);
+				};
+				break;
+			case IPC_EVENT_TYPE_MESSAGE:
+			   	{
+					struct ipc_message *m = event.m;
+					if (m->length > 0) {
+						printf ("message received (type %d): %.*s\n", m->type, m->length, m->payload);
+					}
+
+					ret = ipc_write (event.origin, m);
+					if (ret != IPC_ERROR_NONE) {
+						PRINTERR(ret,"server write");
+					}
+				};
+				break;
+			case IPC_EVENT_TYPE_ERROR:
+			   	{
+					fprintf (stderr, "a problem happened with client %d\n"
+							, ((struct ipc_connection_info*) event.origin)->fd);
+				};
+				break;
+			default :
+				{
+					fprintf (stderr, "there must be a problem, event not set\n");
+				};
+		}
+    }
+
+	// should never go there
+	exit (1);
+}
+
+
+void exit_program(int signal)
+{
+	printf("Quitting, signal: %d\n", signal);
+
+	// free remaining clients
+	for (int i = 0; i < clients->size ; i++) {
+		struct ipc_connection_info *cli = clients->cinfos[i];
+		if (cli != NULL) {
+			free (cli);
+		}
+		clients->cinfos[i] = NULL;
+	}
+
+	ipc_connections_free (clients);
+	free (clients);
+
+
+    // the application will shut down, and close the service
+	enum ipc_errors ret = ipc_server_close (srv);
+    if (ret != IPC_ERROR_NONE) {
+		PRINTERR(ret,"server close");
+    }
+	free (srv);
+
+	exit(EXIT_SUCCESS);
+}
+
+/*
+ * service ping-pong: send back everything sent by the clients
+ * stop the program on SIG{TERM,INT,ALRM,USR{1,2},HUP} signals
+ */
+
+int main(int argc, char * argv[], char **env)
+{
+	argc = argc; // warnings
+	argv = argv; // warnings
+
+	printf ("pid = %d\n", getpid ());
+
+	srv = malloc (sizeof (struct ipc_connection_info));
+	if (srv == NULL) {
+		exit (1);
+	}
+    memset (srv, 0, sizeof (struct ipc_connection_info));
+    srv->index = 0;
+    srv->version = 0;
+
+    // unlink("/tmp/ipc/pongd-0-0");
+
+	enum ipc_errors ret = ipc_server_init (env, srv, PONGD_SERVICE_NAME);
+    if (ret != IPC_ERROR_NONE) {
+		PRINTERR(ret,"server init");
+        return EXIT_FAILURE;
+    }
+    printf ("Listening on %s.\n", srv->spath);
+
+    printf("MAIN: server created\n" );
+
+	signal (SIGHUP, exit_program);
+	signal (SIGALRM, exit_program);
+	signal (SIGUSR1, exit_program);
+	signal (SIGUSR2, exit_program);
+	signal (SIGTERM, exit_program);
+	signal (SIGINT, exit_program);
+
+    // the service will loop until the end of time, or a signal
+    main_loop ();
+
+	// main_loop should not return
+    return EXIT_FAILURE;
+}
diff --git a/tests/func_03_multiple-communications-client.c b/tests/func_03_multiple-communications-client.c
new file mode 100644
index 0000000..cfbff4e
--- /dev/null
+++ b/tests/func_03_multiple-communications-client.c
@@ -0,0 +1,97 @@
+#include "../src/ipc.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define SERVICE_NAME "pong"
+#define SECURE_MALLOC(p, s, wat) p = malloc (s); if (p == NULL) { wat; }
+
+void connection (char **env, struct ipc_connection_info *ci)
+{
+	enum ipc_errors ret = ipc_connection (env, ci, SERVICE_NAME);
+	if (ret != IPC_ERROR_NONE) {
+		fprintf (stderr, "cannot connect to the server\n");
+		exit(EXIT_FAILURE);
+	}
+}
+
+void closing (struct ipc_connection_info *ci)
+{
+	enum ipc_errors ret = ipc_close (ci);
+	if (ret != IPC_ERROR_NONE) {
+		fprintf (stderr, "cannot close server\n");
+		exit(EXIT_FAILURE);
+	}
+}
+
+// test the behavior of the server when the client never read its messages
+
+void send_message (struct ipc_connection_info *ci)
+{
+	SECURE_DECLARATION (struct ipc_message, m);
+	SECURE_MALLOC (m.payload, 5, exit(EXIT_FAILURE));
+	memcpy (m.payload, "salut", 5);
+	m.type = MSG_TYPE_DATA;
+	m.user_type = 42;
+	m.length = 5;
+
+	ipc_write (ci, &m);
+
+	ipc_message_empty (&m);
+}
+
+
+void read_message (struct ipc_connection_info *ci)
+{
+#if 0
+	SECURE_DECLARATION(struct ipc_event, event);
+	SECURE_DECLARATION(struct ipc_connection_infos, clients);
+
+	ipc_add (&clients, ci);
+
+	ipc_wait_event (&clients, NULL, &event);
+
+	switch (event.type) {
+		case IPC_EVENT_TYPE_MESSAGE : {
+				printf ("received message: %*.s\n", m.length, ((struct ipc_message*) event.m)->payload);
+			}
+			break;
+		case IPC_EVENT_TYPE_CONNECTION :
+		case IPC_EVENT_TYPE_DISCONNECTION : 
+		case IPC_EVENT_TYPE_NOT_SET :
+		case IPC_EVENT_TYPE_ERROR :
+		case IPC_EVENT_TYPE_EXTRA_SOCKET :
+		default :
+			printf ("not ok - should not happen\n");
+			exit (EXIT_FAILURE);
+			break;
+	}
+
+	ipc_connections_free (&clients);
+#else
+	SECURE_DECLARATION (struct ipc_message, m);
+
+	ipc_read (ci, &m);
+	printf ("received message: %*.s\n", m.length, m.payload);
+	free (m.payload);
+#endif
+}
+
+int main(int argc, char * argv[], char **env)
+{
+	SECURE_DECLARATION(struct ipc_connection_info,srv1);
+	SECURE_DECLARATION(struct ipc_connection_info,srv2);
+	SECURE_DECLARATION(struct ipc_event, event);
+
+	connection (env, &srv1);
+	connection (env, &srv2);
+	send_message (&srv1);
+	read_message (&srv1);
+	closing (&srv1);
+	send_message (&srv2);
+	read_message (&srv2);
+	closing (&srv2);
+
+    return EXIT_SUCCESS;
+}
diff --git a/tests/func_03_multiple-communications-server.c b/tests/func_03_multiple-communications-server.c
new file mode 100644
index 0000000..56dabe5
--- /dev/null
+++ b/tests/func_03_multiple-communications-server.c
@@ -0,0 +1,84 @@
+#include "../src/ipc.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <signal.h>
+#include <string.h>
+
+#define SERVICE_NAME "pong"
+
+int main_loop(int argc, char * argv[], char **env)
+{
+	enum ipc_errors ret;
+	SECURE_DECLARATION (struct ipc_connection_info, srv);
+
+	printf ("func 03 - server init...\n");
+	ret = ipc_server_init (env, &srv, SERVICE_NAME);
+	if (ret != IPC_ERROR_NONE) {
+		exit(EXIT_FAILURE);
+	}
+	printf ("func 03 - server init ok\n");
+
+	SECURE_DECLARATION (struct ipc_connection_infos, clients);
+	SECURE_DECLARATION (struct ipc_event, event);
+
+	printf ("func 01 - service polling...\n");
+	// listen only for a single client
+	while (1) {
+		ret = ipc_wait_event (&clients, &srv, &event);
+
+		switch (event.type) {
+			case IPC_EVENT_TYPE_CONNECTION : {
+					printf ("connection establishment: %d \n", event.origin->fd);
+				}
+				break;
+			case IPC_EVENT_TYPE_DISCONNECTION : {
+					printf ("client %d disconnecting\n", event.origin->fd);
+				};
+				break;
+			case IPC_EVENT_TYPE_MESSAGE : {
+					printf ("received message: %s\n", ((struct ipc_message*) event.m)->payload);
+					ipc_write (event.origin, (struct ipc_message*) event.m);
+				}
+				break;
+			case IPC_EVENT_TYPE_NOT_SET :
+			case IPC_EVENT_TYPE_ERROR :
+			case IPC_EVENT_TYPE_EXTRA_SOCKET :
+			default :
+				printf ("not ok - should not happen\n");
+				exit (EXIT_FAILURE);
+				break;
+		}
+	}
+
+	printf ("func 03 - closing clients...\n");
+	ipc_connections_free (&clients);
+	printf ("func 03 - closing server...\n");
+	ret = ipc_server_close(&srv);
+	if (ret != IPC_ERROR_NONE)
+	{
+		const char * error_explanation = ipc_errors_get (ret);
+		printf ("ipc_server_close: %s\n", error_explanation);
+	}
+
+	return 0;
+}
+
+void exit_program(int signal)
+{
+	printf("Quitting, signal: %d\n", signal);
+	exit(EXIT_SUCCESS);
+}
+
+
+int main(int argc, char * argv[], char **env)
+{
+	signal (SIGHUP, exit_program);
+	signal (SIGALRM, exit_program);
+	signal (SIGUSR1, exit_program);
+	signal (SIGUSR2, exit_program);
+	signal (SIGTERM, exit_program);
+	signal (SIGINT, exit_program);
+	main_loop (argc, argv, env);
+    return EXIT_SUCCESS;
+}
diff --git a/tests/func_04_empty_message.c b/tests/func_04_empty_message.c
new file mode 100644
index 0000000..cd0d55c
--- /dev/null
+++ b/tests/func_04_empty_message.c
@@ -0,0 +1,72 @@
+#include "../src/ipc.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define SERVICE_NAME "pong"
+#define SECURE_MALLOC(p, s, wat) p = malloc (s); if (p == NULL) { wat; }
+
+void connection (char **env, struct ipc_connection_info *ci)
+{
+	enum ipc_errors ret = ipc_connection (env, ci, SERVICE_NAME);
+	if (ret != IPC_ERROR_NONE) {
+		fprintf (stderr, "cannot connect to the server\n");
+		exit(EXIT_FAILURE);
+	}
+}
+
+void closing (struct ipc_connection_info *ci)
+{
+	enum ipc_errors ret = ipc_close (ci);
+	if (ret != IPC_ERROR_NONE) {
+		fprintf (stderr, "cannot close server\n");
+		exit(EXIT_FAILURE);
+	}
+}
+
+// test the behavior of the server when the client never read its messages
+
+void send_message (struct ipc_connection_info *ci)
+{
+	SECURE_DECLARATION (struct ipc_message, m);
+	SECURE_MALLOC (m.payload, 1, exit(EXIT_FAILURE));
+	memcpy (m.payload, "", 0);
+	m.type = MSG_TYPE_DATA;
+	m.user_type = 42;
+	m.length = 0;
+
+	ipc_write (ci, &m);
+
+	ipc_message_empty (&m);
+}
+
+
+void read_message (struct ipc_connection_info *ci)
+{
+	SECURE_DECLARATION (struct ipc_message, m);
+
+	ipc_read (ci, &m);
+	if (m.length > 0) {
+		printf ("received message: %*.s\n", m.length, m.payload);
+	}
+	else {
+		printf ("received empty message as intended : %d bytes\n", m.length);
+		if (m.payload == NULL) {
+			printf ("message payload is NULL\n");
+		}
+	}
+	free (m.payload);
+}
+
+int main(int argc, char * argv[], char **env)
+{
+	SECURE_DECLARATION(struct ipc_connection_info,srv1);
+
+	connection (env, &srv1);
+	send_message (&srv1);
+	read_message (&srv1);
+	closing (&srv1);
+
+    return EXIT_SUCCESS;
+}
diff --git a/tests/unit_01_service-path.c b/tests/unit_01_service-path.c
new file mode 100644
index 0000000..cf2d531
--- /dev/null
+++ b/tests/unit_01_service-path.c
@@ -0,0 +1,34 @@
+#include "../src/ipc.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define SERVICE_NAME "example"
+#define VERSION		0
+#define INDEX		0
+
+int main(int argc, char * argv[])
+{
+	char path[PATH_MAX];
+	char * sname = SERVICE_NAME;
+	int32_t index = INDEX;
+	int32_t version = VERSION;
+
+	if (argc == 4) {
+		sname = argv[1];
+		index = atoi(argv[2]);
+		version = atoi(argv[3]);
+	}
+	else if (argc != 1) {
+		fprintf (stderr, "usage: %s [service-name index version]\n", argv[0]);
+		return EXIT_FAILURE;
+	}
+
+	service_path (path, sname, index, version);
+
+	// printf ("servicename: %s, index: %d, version: %d\n", sname, index, version);
+	printf ("%s\n", path);
+
+	return EXIT_SUCCESS;
+}
diff --git a/tests/unit_02_usock-remove.c b/tests/unit_02_usock-remove.c
new file mode 100644
index 0000000..168d91f
--- /dev/null
+++ b/tests/unit_02_usock-remove.c
@@ -0,0 +1,26 @@
+#include "../src/ipc.h"
+#include "../src/usocket.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define FILE_TO_REMOVE "/tmp/FILE_TO_REMOVE"
+
+int main(int argc, char * argv[])
+{
+	char * ftr = FILE_TO_REMOVE;
+
+	if (argc == 2) {
+		ftr = argv[1];
+	}
+	else if (argc > 2) {
+		fprintf (stderr, "usage: %s [file-to-remove]\n", argv[0]);
+		return EXIT_FAILURE;
+	}
+
+	enum ipc_errors ret = usock_remove (ftr);
+	if (ret == IPC_ERROR_NONE)
+		return 0;
+	return 1;
+}
diff --git a/tests/unit_03_connection-add-remove.c b/tests/unit_03_connection-add-remove.c
new file mode 100644
index 0000000..17968aa
--- /dev/null
+++ b/tests/unit_03_connection-add-remove.c
@@ -0,0 +1,15 @@
+#include "../src/ipc.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+/***
+ * TODO
+ */
+
+// int main(int argc, char * argv[])
+int main(void)
+{
+	return EXIT_SUCCESS;
+}