test: add unit tests for do_send seq lifecycle and error handling

src/ping/Makefile.am

@@ -1,4 +1,5 @@
 bin_PROGRAMS = ft_ping
+noinst_LTLIBRARIES = libping_core.la
 
 PING_VERSION = 0.0.1
 VERSION_HEADER = $(top_srcdir)/includes/version_gen.h
@@ -40,8 +41,7 @@ $(VERSION_HEADER): FORCE
 FORCE:
 .PHONY: FORCE
 
-ft_ping_SOURCES = \
-	main.c \
+libping_core_la_SOURCES = \
 	cli/parse.c \
 	cli/handlers/handle_count.c \
 	cli/handlers/handle_dont_fragment.c \
@@ -81,12 +81,6 @@ ft_ping_SOURCES = \
 	stats/stats_init.c \
 	stats/stats_update.c
 
-ft_ping_CPPFLAGS = \
-	-I $(top_srcdir)/includes \
-	-I $(top_srcdir)/libicmp/includes \
-	-I $(top_srcdir)/libcli/include \
-	-D_GNU_SOURCE
-
 BASE_CFLAGS = -std=c99 $(STRICT_CFLAGS)
 
 if ENABLE_DEBUG
@@ -101,13 +95,27 @@ else
 SANITIZER_FLAGS =
 endif
 
-ft_ping_CFLAGS = $(BASE_CFLAGS) $(EXTRA_CFLAGS) $(SANITIZER_FLAGS)
+PING_CPPFLAGS = \
+	-I $(top_srcdir)/includes \
+	-I $(top_srcdir)/libicmp/includes \
+	-I $(top_srcdir)/libcli/include \
+	-D_GNU_SOURCE
+
+PING_CFLAGS = $(BASE_CFLAGS) $(EXTRA_CFLAGS) $(SANITIZER_FLAGS)
+
+libping_core_la_CPPFLAGS = $(PING_CPPFLAGS)
+libping_core_la_CFLAGS   = $(PING_CFLAGS)
+
+ft_ping_SOURCES  = main.c
+ft_ping_CPPFLAGS = $(PING_CPPFLAGS)
+ft_ping_CFLAGS   = $(PING_CFLAGS)
 ft_ping_LDFLAGS  = $(SANITIZER_FLAGS)
 ft_ping_LDADD    = \
+	libping_core.la \
 	$(top_srcdir)/libicmp/libicmp.a \
 	$(top_builddir)/libcli/src/libcli.la \
 	-lm
 
 # Build libicmp (simple Makefile) before linking
-$(top_srcdir)/libicmp/libicmp.a:
+$(top_srcdir)/libicmp/libicmp.a: FORCE
 	$(MAKE) -C $(top_srcdir)/libicmp BUILD_STATIC=yes BUILD_SHARED=no

tests/Makefile.am

@@ -1,59 +1,8 @@
-check_PROGRAMS = ft_ping_test
+check_PROGRAMS = test_tracker test_stats test_send
 
-ft_ping_test_SOURCES = \
-	test_main.c \
-	cli/handlers/test_handle_count.c \
-	cli/handlers/test_handle_flood.c \
-	cli/handlers/test_handle_help.c \
-	cli/handlers/test_handle_interval.c \
-	cli/handlers/test_handle_quiet.c \
-	cli/handlers/test_handler_map.c \
-	cli/handlers/test_handle_size.c \
-	cli/handlers/test_handle_timeout.c \
-	cli/handlers/test_handle_ttl.c \
-	cli/handlers/test_handle_version.c \
-	cli/handlers/test_handle_verbose.c \
-	cli/handlers/test_handle_dont_fragment.c \
-	cli/handlers/test_handle_deadline.c \
-	cli/parse_utils/test_parse_int.c \
-	cli/parse_utils/test_parse_float.c \
-	cli/parse_utils/test_parse_inet_addr.c \
-	cli/parse_utils/test_parse_destinations.c \
-	ping/stats/test_stats.c \
-	ping/tracker/test_tracker.c \
-	$(top_srcdir)/src/ping/cli/parse.c \
-	$(top_srcdir)/src/ping/cli/handlers/handle_count.c \
-	$(top_srcdir)/src/ping/cli/handlers/handle_dont_fragment.c \
-	$(top_srcdir)/src/ping/cli/handlers/handle_deadline.c \
-	$(top_srcdir)/src/ping/cli/handlers/handle_flood.c \
-	$(top_srcdir)/src/ping/cli/handlers/handle_help.c \
-	$(top_srcdir)/src/ping/cli/handlers/handle_interval.c \
-	$(top_srcdir)/src/ping/cli/handlers/handle_quiet.c \
-	$(top_srcdir)/src/ping/cli/handlers/option_map.c \
-	$(top_srcdir)/src/ping/cli/handlers/handle_size.c \
-	$(top_srcdir)/src/ping/cli/handlers/handle_timeout.c \
-	$(top_srcdir)/src/ping/cli/handlers/handle_ttl.c \
-	$(top_srcdir)/src/ping/cli/handlers/handle_version.c \
-	$(top_srcdir)/src/ping/cli/handlers/handle_verbose.c \
-	$(top_srcdir)/src/ping/cli/parse_utils/parse_inet_addr.c \
-	$(top_srcdir)/src/ping/cli/parse_utils/parse_destinations.c \
-	$(top_srcdir)/src/ping/cli/config_free.c \
-	$(top_srcdir)/src/ping/cli/messages/help.c \
-	$(top_srcdir)/src/ping/cli/messages/version.c \
-	$(top_srcdir)/src/ping/cli/messages/error.c \
-	$(top_srcdir)/src/ping/tracker/init.c \
-	$(top_srcdir)/src/ping/tracker/record_send.c \
-	$(top_srcdir)/src/ping/tracker/record_recv.c \
-	$(top_srcdir)/src/ping/stats/stats_get.c \
-	$(top_srcdir)/src/ping/stats/stats_init.c \
-	$(top_srcdir)/src/ping/stats/stats_update.c
-
-ft_ping_test_CPPFLAGS = \
-	-I $(top_srcdir)/includes \
-	-I $(top_srcdir)/libicmp/includes \
-	-I $(top_srcdir)/libcli/include \
-	-I $(top_srcdir)/tests \
-	-D_GNU_SOURCE
+test_tracker_SOURCES = test_support.c ping/tracker/test_tracker.c
+test_stats_SOURCES   = test_support.c ping/stats/test_stats.c
+test_send_SOURCES    = test_support.c send/test_do_send.c
 
 BASE_CFLAGS = -std=c99 $(STRICT_CFLAGS)
 
@@ -69,15 +18,42 @@ else
 SANITIZER_FLAGS =
 endif
 
-ft_ping_test_CFLAGS = $(BASE_CFLAGS) $(EXTRA_CFLAGS) $(SANITIZER_FLAGS)
-ft_ping_test_LDFLAGS = $(SANITIZER_FLAGS)
-ft_ping_test_LDADD = \
+TEST_CPPFLAGS = \
+	-I $(top_srcdir)/includes \
+	-I $(top_srcdir)/libicmp/includes \
+	-I $(top_srcdir)/libcli/include \
+	-I $(top_srcdir)/tests \
+	-D_GNU_SOURCE
+
+TEST_CFLAGS = $(BASE_CFLAGS) $(EXTRA_CFLAGS) $(SANITIZER_FLAGS)
+
+TEST_LDADD = \
+	$(top_builddir)/src/ping/libping_core.la \
 	$(top_srcdir)/libicmp/libicmp.a \
 	$(top_builddir)/libcli/src/libcli.la \
 	$(CRITERION_LIBS) \
 	-lm
 
-TESTS = ft_ping_test
+test_tracker_CPPFLAGS = $(TEST_CPPFLAGS)
+test_tracker_CFLAGS   = $(TEST_CFLAGS)
+test_tracker_LDFLAGS  = $(SANITIZER_FLAGS)
+test_tracker_LDADD    = $(TEST_LDADD)
+
+test_stats_CPPFLAGS = $(TEST_CPPFLAGS)
+test_stats_CFLAGS   = $(TEST_CFLAGS)
+test_stats_LDFLAGS  = $(SANITIZER_FLAGS)
+test_stats_LDADD    = $(TEST_LDADD)
+
+test_send_CPPFLAGS = $(TEST_CPPFLAGS)
+test_send_CFLAGS   = $(TEST_CFLAGS)
+test_send_LDFLAGS  = $(SANITIZER_FLAGS) \
+	-Wl,--wrap=icmp_send_echo \
+	-Wl,--wrap=icmp_should_retry \
+	-Wl,--wrap=icmp_strerror \
+	-Wl,--wrap=ping_scheduler_arm
+test_send_LDADD    = $(TEST_LDADD)
+
+TESTS = test_tracker test_stats test_send
 
 # Version header needed by test_main.c
 BUILT_SOURCES = $(top_srcdir)/includes/version_gen.h

tests/cli/handlers/test_handle_count.c

@@ -1,24 +0,0 @@
-#include <criterion/criterion.h>
-#include "ping/cli.h"
-#include "internal/ping/cli_handlers.h"
-
-/* Test 1: basic test */
-Test(cli_handle_count, valid_number)
-{
-	struct ping_config	config = {0};
-    const char *arg = "42";
-    int ret = cli_handle_count(arg, &config);
-
-    cr_assert_eq(ret, CLI_SUCCESS);
-    cr_assert_eq(config.count, 42);
-}
-
-/* Test 2: invalid number */
-Test(cli_handle_count, invalid_number)
-{
-	struct ping_config	config = {0};
-    const char *arg = "-42";
-    int ret = cli_handle_count(arg, &config);
-
-    cr_assert_eq(ret, CLI_ERROR);
-}

tests/cli/handlers/test_handle_deadline.c

@@ -1,22 +0,0 @@
-#include <criterion/criterion.h>
-#include "ping/cli.h"
-#include "internal/ping/cli_handlers.h"
-
-Test(cli_handle_deadline, valid_number)
-{
-	struct ping_config	config = {0};
-	const char			*arg = "1.5";
-	int					ret = cli_handle_deadline(arg, &config);
-
-	cr_assert_eq(ret, CLI_SUCCESS);
-	cr_assert_float_eq(config.deadline, 1.5, .001);
-}
-
-Test(cli_handle_deadline, invalid_number)
-{
-	struct ping_config	config = {0};
-	const char			*arg = "-1";
-	int					ret = cli_handle_deadline(arg, &config);
-
-	cr_assert_eq(ret, CLI_ERROR);
-}

tests/cli/handlers/test_handle_dont_fragment.c

@@ -1,14 +0,0 @@
-#include <criterion/criterion.h>
-#include "ping/cli.h"
-#include "ping/ft_ping_flags.h"
-#include "internal/ping/cli_handlers.h"
-
-Test(handle_dont_fragment, flag_test)
-{
-	struct ping_config	config = {0};
-	const char			*arg = "";
-	const int			ret = cli_handle_dont_fragment(arg, &config);
-
-	cr_assert(HAS_FLAG(config.flags, FLAG_DONT_FRAGMENT));
-	cr_assert_eq(ret, CLI_SUCCESS);
-}

tests/cli/handlers/test_handle_flood.c

@@ -1,15 +0,0 @@
-#include <criterion/criterion.h>
-#include "ping/cli.h"
-#include "internal/ping/cli_handlers.h"
-#include "ping/ft_ping_flags.h"
-
-/* Test 1: test flag*/
-Test(handle_flood, flag_test)
-{
-	struct ping_config	config = {0};
-    const char *arg = "";
-    const int ret = cli_handle_flood(arg, &config);
-
-    cr_assert(HAS_FLAG(config.flags, FLAG_FLOOD));
-    cr_assert_eq(ret, CLI_SUCCESS);
-}

tests/cli/handlers/test_handle_help.c

@@ -1,13 +0,0 @@
-#include <criterion/criterion.h>
-#include "ping/cli.h"
-#include "internal/ping/cli_handlers.h"
-
-/* Test 1: exit code test */
-Test(handle_help, exit_code)
-{
-	struct ping_config	config = {0};
-    const char *arg = "";
-    int ret = cli_handle_help(arg, &config);
-
-    cr_assert_eq(ret, CLI_EXIT_SUCCESS);
-}

tests/cli/handlers/test_handle_interval.c

@@ -1,24 +0,0 @@
-#include <criterion/criterion.h>
-#include "ping/cli.h"
-#include "internal/ping/cli_handlers.h"
-
-/* Test 1: basic test */
-Test(cli_handle_interval, valid_number)
-{
-	struct ping_config	config = {0};
-    const char *arg = ".42";
-    int ret = cli_handle_interval(arg, &config);
-
-    cr_assert_eq(ret, CLI_SUCCESS);
-    cr_assert_float_eq(config.interval, .42, .001);
-}
-
-/* Test 2: invalid number */
-Test(cli_handle_interval, invalid_number)
-{
-	struct ping_config	config = {0};
-    const char *arg = "-42";
-    int ret = cli_handle_interval(arg, &config);
-
-    cr_assert_eq(ret, CLI_ERROR);
-}

tests/cli/handlers/test_handle_quiet.c

@@ -1,15 +0,0 @@
-#include "ping/cli.h"
-#include "ping/ft_ping_flags.h"
-#include "internal/ping/cli_handlers.h"
-#include <criterion/criterion.h>
-
-/* Test 1: test flag*/
-Test(handle_quiet, flag_test)
-{
-	struct ping_config	config = {0};
-    const char *arg = "";
-    const int ret = cli_handle_quiet(arg, &config);
-
-    cr_assert(HAS_FLAG(config.flags, FLAG_QUIET));
-    cr_assert_eq(ret, CLI_SUCCESS);
-}

tests/cli/handlers/test_handle_size.c

@@ -1,34 +0,0 @@
-#include <criterion/criterion.h>
-#include "ping/cli.h"
-#include "internal/ping/cli_handlers.h"
-
-/* Test 1: basic test */
-Test(cli_handle_size, valid_number)
-{
-	struct ping_config	config = {0};
-    const char *arg = "65527";
-    int ret = cli_handle_size(arg, &config);
-
-    cr_assert_eq(ret, CLI_SUCCESS);
-    cr_assert_eq(config.packet_size, 65527);
-}
-
-/* Test 2: invalid number */
-Test(cli_handle_size, invalid_number)
-{
-	struct ping_config	config = {0};
-    const char *arg = "-42";
-    int ret = cli_handle_size(arg, &config);
-
-    cr_assert_eq(ret, CLI_ERROR);
-}
-
-/* Test 3: max test */
-Test(cli_handle_size, limit_test)
-{
-	struct ping_config	config = {0};
-    const char *arg = "65528";
-    int ret = cli_handle_size(arg, &config);
-
-    cr_assert_eq(ret, CLI_ERROR);
-}

tests/cli/handlers/test_handle_timeout.c

@@ -1,24 +0,0 @@
-#include <criterion/criterion.h>
-#include "ping/cli.h"
-#include "internal/ping/cli_handlers.h"
-
-/* Test 1: basic test */
-Test(cli_handle_timeout, valid_number)
-{
-	struct ping_config	config = {0};
-    const char *arg = ".42";
-    int ret = cli_handle_timeout(arg, &config);
-
-    cr_assert_eq(ret, CLI_SUCCESS);
-    cr_assert_float_eq(config.timeout, .42, .001);
-}
-
-/* Test 2: invalid number */
-Test(cli_handle_timeout, invalid_number)
-{
-	struct ping_config	config = {0};
-    const char *arg = "-42";
-    int ret = cli_handle_timeout(arg, &config);
-
-    cr_assert_eq(ret, CLI_ERROR);
-}

tests/cli/handlers/test_handle_ttl.c

@@ -1,34 +0,0 @@
-#include <criterion/criterion.h>
-#include "ping/cli.h"
-#include "internal/ping/cli_handlers.h"
-
-/* Test 1: basic test */
-Test(cli_handle_ttl, valid_number)
-{
-	struct ping_config	config = {0};
-    const char *arg = "255";
-    int ret = cli_handle_ttl(arg, &config);
-
-    cr_assert_eq(ret, CLI_SUCCESS);
-    cr_assert_eq(config.ttl, 255);
-}
-
-/* Test 2: invalid number */
-Test(cli_handle_ttl, invalid_number)
-{
-	struct ping_config	config = {0};
-    const char *arg = "-1";
-    int ret = cli_handle_ttl(arg, &config);
-
-    cr_assert_eq(ret, CLI_ERROR);
-}
-
-/* Test 3: max test */
-Test(cli_handle_ttl, limit_test)
-{
-	struct ping_config	config = {0};
-    const char *arg = "256";
-    int ret = cli_handle_ttl(arg, &config);
-
-    cr_assert_eq(ret, CLI_ERROR);
-}

tests/cli/handlers/test_handle_verbose.c

@@ -1,15 +0,0 @@
-#include "ping/cli.h"
-#include "ping/ft_ping_flags.h"
-#include "internal/ping/cli_handlers.h"
-#include <criterion/criterion.h>
-
-/* Test 1: test flag*/
-Test(handle_verbose, flag_test)
-{
-	struct ping_config	config = {0};
-    const char *arg = "";
-    const int ret = cli_handle_verbose(arg, &config);
-
-    cr_assert(HAS_FLAG(config.flags, FLAG_VERBOSE));
-    cr_assert_eq(ret, CLI_SUCCESS);
-}

tests/cli/handlers/test_handle_version.c

@@ -1,13 +0,0 @@
-#include <criterion/criterion.h>
-#include "ping/cli.h"
-#include "internal/ping/cli_handlers.h"
-
-/* Test 1: exit code test */
-Test(handle_version, exit_code)
-{
-	struct ping_config	config = {0};
-    const char *arg = "";
-    int ret = cli_handle_version(arg, &config);
-
-    cr_assert_eq(ret, CLI_EXIT_SUCCESS);
-}

tests/cli/handlers/test_handler_map.c

@@ -1,17 +0,0 @@
-#include "internal/ping/cli_handlers.h"
-#include <criterion/criterion.h>
-#include <stddef.h>
-
-/* Test 1: g_options is null terminated */
-Test(_test_handler_map, always_pass)
-{
-    size_t i = 0;
-    for (i = 0; NULL != g_options[i].description; ++i);
-    
-    cr_assert(g_options[i].description == NULL);
-    cr_assert(g_options[i].arg_type == 0);
-    cr_assert(g_options[i].handler == NULL);
-    cr_assert(g_options[i].has_arg == 0);
-    cr_assert(g_options[i].long_opt == NULL);
-    cr_assert(g_options[i].short_opt == 0);
-}

tests/cli/parse_utils/test_parse_destinations.c

@@ -1,38 +0,0 @@
-#include <criterion/criterion.h>
-#include <stdlib.h>
-#include "ping/cli.h"
-#include "internal/ping/parse_utils.h"
-
-Test(cli_parse_destinations, no_destinations)
-{
-	struct ping_config	config = {0};
-	char				*argv[] = {"ping"};
-	int					argc = 1;
-	int					ret = cli_parse_destinations(argc, argv, argc, &config);
-
-	cr_assert_eq(ret, CLI_ERROR);
-}
-
-Test(cli_parse_destinations, single_destination)
-{
-	struct ping_config	config = {0};
-	char				*argv[] = {"ping", "127.0.0.1"};
-	int					argc = 2;
-	int					ret = cli_parse_destinations(argc, argv, 1, &config);
-
-	cr_assert_eq(ret, CLI_SUCCESS);
-	cr_assert_eq(config.nb_destinations, (size_t)1);
-	free(config.destinations);
-}
-
-Test(cli_parse_destinations, multiple_destinations)
-{
-	struct ping_config	config = {0};
-	char				*argv[] = {"ping", "127.0.0.1", "127.0.0.2"};
-	int					argc = 3;
-	int					ret = cli_parse_destinations(argc, argv, 1, &config);
-
-	cr_assert_eq(ret, CLI_SUCCESS);
-	cr_assert_eq(config.nb_destinations, (size_t)2);
-	free(config.destinations);
-}

tests/cli/parse_utils/test_parse_float.c

@@ -1,69 +0,0 @@
-#include <criterion/criterion.h>
-#include "internal/cli/parse_utils.h"
-
-/* Test 1: Valid simple number */
-Test(parse_float, valid_number)
-{
-    float result;
-    int ret = cli_parse_float("42.42", &result);
-    
-    cr_assert_eq(ret, 0);
-    cr_assert_float_eq(result, 42.42, 0.0001);
-}
-
-/* Test 2: Zero */
-Test(parse_float, zero)
-{
-    float result;
-    int ret = cli_parse_float("0", &result);
-    
-    cr_assert_eq(ret, 0);
-    cr_assert_float_eq(result, 0, 0.0001);
-}
-
-/* Test 3: NULL pointer */
-Test(parse_float, null_pointer)
-{
-    float result;
-    int ret = cli_parse_float(NULL, &result);
-    
-    cr_assert_eq(ret, 1);
-}
-
-/* Test 4: Empty string */
-Test(parse_float, empty_string)
-{
-    float result;
-    int ret = cli_parse_float("", &result);
-    
-    cr_assert_eq(ret, 1);
-}
-
-/* Test 5: Negative number (cli_parse_float accepts negatives; use cli_parse_ufloat to reject) */
-Test(parse_float, negative_number)
-{
-    float result;
-    int ret = cli_parse_float("-42", &result);
-
-    cr_assert_eq(ret, 0);
-    cr_assert_float_eq(result, -42.0f, 0.001f);
-}
-
-/* Test 6: Invalid characters */
-Test(parse_float, invalid_characters)
-{
-    float result;
-    int ret = cli_parse_float("42abc", &result);
-    
-    cr_assert_eq(ret, 1);
-}
-
-/* Test 7: Dot + number */
-Test(parse_float, dot)
-{
-    float result;
-    int ret = cli_parse_float(".42", &result);
-    
-    cr_assert_eq(ret, 0);
-    cr_assert_float_eq(result, 0.42, 0.0001);
-}

tests/cli/parse_utils/test_parse_inet_addr.c

@@ -1,21 +0,0 @@
-#include <criterion/criterion.h>
-#include <string.h>
-#include "ping/ping.h"
-#include "internal/ping/parse_utils.h"
-
-Test(cli_parse_inet_addr, valid_ip)
-{
-	struct destinations	out = {0};
-	int					ret = cli_parse_inet_addr("127.0.0.1", &out);
-
-	cr_assert_eq(ret, 0);
-	cr_assert_str_eq(out.dom, "127.0.0.1");
-}
-
-Test(cli_parse_inet_addr, invalid_host)
-{
-	struct destinations	out = {0};
-	int					ret = cli_parse_inet_addr("invalid.host.local", &out);
-
-	cr_assert_eq(ret, 1);
-}

tests/cli/parse_utils/test_parse_int.c

@@ -1,68 +0,0 @@
-#include <criterion/criterion.h>
-#include <stdint.h>
-#include "internal/cli/parse_utils.h"
-
-/* Test 1: Valid simple number */
-Test(parse_uint64, valid_number)
-{
-    uint64_t result;
-    int ret = cli_parse_uint64("42", &result);
-    
-    cr_assert_eq(ret, 0);
-    cr_assert_eq(result, 42);
-}
-
-/* Test 2: Zero */
-Test(parse_uint64, zero)
-{
-    uint64_t result;
-    int ret = cli_parse_uint64("0", &result);
-    
-    cr_assert_eq(ret, 0);
-    cr_assert_eq(result, 0);
-}
-
-/* Test 3: NULL pointer */
-Test(parse_uint64, null_pointer)
-{
-    uint64_t result;
-    int ret = cli_parse_uint64(NULL, &result);
-    
-    cr_assert_eq(ret, 1);
-}
-
-/* Test 4: Empty string */
-Test(parse_uint64, empty_string)
-{
-    uint64_t result;
-    int ret = cli_parse_uint64("", &result);
-    
-    cr_assert_eq(ret, 1);
-}
-
-/* Test 5: Negative number */
-Test(parse_uint64, negative_number)
-{
-    uint64_t result;
-    int ret = cli_parse_uint64("-42", &result);
-    
-    cr_assert_eq(ret, 1);
-}
-
-/* Test 6: Invalid characters */
-Test(parse_uint64, invalid_characters)
-{
-    uint64_t result;
-    int ret = cli_parse_uint64("42abc", &result);
-    
-    cr_assert_eq(ret, 1);
-}
-
-/* Test 7: Overflow */
-Test(parse_uint64, overflow)
-{
-    uint64_t result;
-    int ret = cli_parse_uint64("18446744073709551616", &result);
-    
-    cr_assert_eq(ret, 1);
-}

tests/send/test_do_send.c

@@ -0,0 +1,106 @@
+#include <criterion/criterion.h>
+#include <netinet/in.h>
+#include "compiler.h"
+#include <stddef.h>
+#include <stdint.h>
+
+#include "icmp.h"
+#include "internal/ping/send.h"
+#include "internal/ping/ping_state.h"
+#include "internal/ping/tracker.h"
+#include "ping/ping.h"
+
+/* Controllable mock state */
+int g_mock_send_ret;
+int g_mock_retry_ret;
+
+int __wrap_icmp_send_echo(icmp_handle_t *h __unused, struct in_addr dest
+		__unused, uint16_t id __unused, uint16_t seq __unused, uint8_t ttl
+		__unused, const void *payload __unused, size_t len __unused)
+{
+	return g_mock_send_ret;
+}
+
+int __wrap_icmp_should_retry(const icmp_handle_t *h __unused)
+{
+	return g_mock_retry_ret;
+}
+
+const char *__wrap_icmp_strerror(const icmp_handle_t *h __unused)
+{
+	return "mock error";
+}
+
+int __wrap_ping_scheduler_arm(const struct ping_config *c __unused)
+{
+	return 0;
+}
+
+static struct ping_config	g_config;
+static struct ping_tracker	g_tracker;
+static struct ping_state	g_state;
+
+static void
+setup(void)
+{
+	g_config  = (struct ping_config){0};
+	g_state   = (struct ping_state){
+		.handle  = NULL,
+		.config  = &g_config,
+		.tracker = &g_tracker,
+		.seq     = 0,
+	};
+	ping_tracker_init(&g_tracker);
+	g_mock_send_ret  = 0;
+	g_mock_retry_ret = 0;
+}
+
+Test(do_send, success_increments_seq, .init = setup)
+{
+	g_mock_send_ret = 0;
+	do_send(&g_state, 16);
+	cr_assert_eq(g_state.seq, (uint16_t)1);
+	cr_assert_eq(g_tracker.nb_sent, (size_t)1);
+}
+
+Test(do_send, eagain_does_not_consume_seq, .init = setup)
+{
+	g_mock_send_ret  = 1;
+	g_mock_retry_ret = 1;
+	do_send(&g_state, 16);
+	cr_assert_eq(g_state.seq, (uint16_t)0);
+	cr_assert_eq(g_tracker.nb_sent, (size_t)0);
+}
+
+Test(do_send, hard_error_does_not_consume_seq, .init = setup)
+{
+	g_mock_send_ret  = -1;
+	g_mock_retry_ret = 0;
+	do_send(&g_state, 16);
+	cr_assert_eq(g_state.seq, (uint16_t)0);
+	cr_assert_eq(g_tracker.nb_sent, (size_t)0);
+}
+
+Test(do_send, multiple_success_increments_seq, .init = setup)
+{
+	g_mock_send_ret = 0;
+	do_send(&g_state, 16);
+	do_send(&g_state, 16);
+	do_send(&g_state, 16);
+	cr_assert_eq(g_state.seq, (uint16_t)3);
+	cr_assert_eq(g_tracker.nb_sent, (size_t)3);
+}
+
+Test(do_send, eagain_then_success_uses_same_seq, .init = setup)
+{
+	g_mock_send_ret  = 1;
+	g_mock_retry_ret = 1;
+	do_send(&g_state, 16);
+	cr_assert_eq(g_state.seq, (uint16_t)0);
+
+	g_mock_send_ret  = 0;
+	g_mock_retry_ret = 0;
+	do_send(&g_state, 16);
+	cr_assert_eq(g_state.seq, (uint16_t)1);
+	cr_assert_eq(g_tracker.nb_sent, (size_t)1);
+}

tests/test_main.c

@@ -1,9 +0,0 @@
-#include <criterion/criterion.h>
-#include "version_gen.h"
-
-char *g_prog_name = "ft_ping";
-Test(dummy, always_pass)
-{
-    cr_assert(1, "Hello, world!");
-}
-

tests/test_support.c

@@ -0,0 +1,4 @@
+#include "version_gen.h"
+
+char *g_prog_name = "ft_ping";
+