lldp: add test coverage for sd_lldp_get_neighbors() with multiple neighbors
In particular, check that the order of the results is consistent. This test coverage will be useful in order to refactor the compare_func used while sorting the results. Tested: ninja -C build/ test
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@ -229,6 +229,135 @@ static void test_receive_oui_packet(sd_event *e) {
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assert_se(stop_lldp(lldp) == 0);
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}
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static void test_multiple_neighbors_sorted(sd_event *e) {
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static const uint8_t frame1[] = {
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/* Ethernet header */
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0x01, 0x80, 0xc2, 0x00, 0x00, 0x03, /* Destination MAC */
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0x01, 0x02, 0x03, 0x04, 0x05, 0x06, /* Source MAC */
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0x88, 0xcc, /* Ethertype */
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/* LLDP mandatory TLVs */
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0x02, 0x04, 0x01, '1', '/', '2', /* Chassis component: "1/2" */
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0x04, 0x04, 0x02, '2', '/', '3', /* Port component: "2/3" */
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0x06, 0x02, 0x00, 0x78, /* TTL: 120 seconds */
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0x00, 0x00 /* End Of LLDPDU */
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};
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static const uint8_t frame2[] = {
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/* Ethernet header */
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0x01, 0x80, 0xc2, 0x00, 0x00, 0x03, /* Destination MAC */
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0x01, 0x02, 0x03, 0x04, 0x05, 0x06, /* Source MAC */
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0x88, 0xcc, /* Ethertype */
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/* LLDP mandatory TLVs */
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0x02, 0x04, 0x01, '2', '/', '1', /* Chassis component: "2/1" */
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0x04, 0x04, 0x02, '1', '/', '3', /* Port component: "1/3" */
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0x06, 0x02, 0x00, 0x78, /* TTL: 120 seconds */
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0x00, 0x00 /* End Of LLDPDU */
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};
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static const uint8_t frame3[] = {
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/* Ethernet header */
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0x01, 0x80, 0xc2, 0x00, 0x00, 0x03, /* Destination MAC */
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0x01, 0x02, 0x03, 0x04, 0x05, 0x06, /* Source MAC */
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0x88, 0xcc, /* Ethertype */
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/* LLDP mandatory TLVs */
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0x02, 0x05, 0x01, '2', '/', '1', '0', /* Chassis component: "2/10" */
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0x04, 0x04, 0x02, '1', '/', '0', /* Port component: "1/0" */
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0x06, 0x02, 0x00, 0x78, /* TTL: 120 seconds */
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0x00, 0x00 /* End Of LLDPDU */
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};
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static const uint8_t frame4[] = {
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/* Ethernet header */
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0x01, 0x80, 0xc2, 0x00, 0x00, 0x03, /* Destination MAC */
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0x01, 0x02, 0x03, 0x04, 0x05, 0x06, /* Source MAC */
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0x88, 0xcc, /* Ethertype */
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/* LLDP mandatory TLVs */
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0x02, 0x05, 0x01, '2', '/', '1', '9', /* Chassis component: "2/19" */
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0x04, 0x04, 0x02, '1', '/', '0', /* Port component: "1/0" */
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0x06, 0x02, 0x00, 0x78, /* TTL: 120 seconds */
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0x00, 0x00 /* End Of LLDPDU */
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};
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static const uint8_t frame5[] = {
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/* Ethernet header */
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0x01, 0x80, 0xc2, 0x00, 0x00, 0x03, /* Destination MAC */
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0x01, 0x02, 0x03, 0x04, 0x05, 0x06, /* Source MAC */
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0x88, 0xcc, /* Ethertype */
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/* LLDP mandatory TLVs */
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0x02, 0x04, 0x01, '1', '/', '2', /* Chassis component: "1/2" */
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0x04, 0x05, 0x02, '2', '/', '1', '0', /* Port component: "2/10" */
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0x06, 0x02, 0x00, 0x78, /* TTL: 120 seconds */
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0x00, 0x00 /* End Of LLDPDU */
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};
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static const uint8_t frame6[] = {
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/* Ethernet header */
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0x01, 0x80, 0xc2, 0x00, 0x00, 0x03, /* Destination MAC */
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0x01, 0x02, 0x03, 0x04, 0x05, 0x06, /* Source MAC */
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0x88, 0xcc, /* Ethertype */
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/* LLDP mandatory TLVs */
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0x02, 0x04, 0x01, '1', '/', '2', /* Chassis component: "1/2" */
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0x04, 0x05, 0x02, '2', '/', '3', '9', /* Port component: "2/10" */
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0x06, 0x02, 0x00, 0x78, /* TTL: 120 seconds */
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0x00, 0x00 /* End Of LLDPDU */
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};
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static const char* expected[] = {
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/* ordered pairs of Chassis+Port */
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"1/2", "2/10",
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"1/2", "2/3",
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"1/2", "2/39",
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"2/1", "1/3",
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"2/10", "1/0",
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"2/19", "1/0",
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};
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sd_lldp *lldp;
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sd_lldp_neighbor **neighbors;
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int i;
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uint8_t type;
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const void *data;
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size_t length, expected_length;
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uint16_t ttl;
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lldp_handler_calls = 0;
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assert_se(start_lldp(&lldp, e, lldp_handler, NULL) == 0);
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assert_se(write(test_fd[1], frame1, sizeof(frame1)) == sizeof(frame1));
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sd_event_run(e, 0);
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assert_se(write(test_fd[1], frame2, sizeof(frame2)) == sizeof(frame2));
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sd_event_run(e, 0);
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assert_se(write(test_fd[1], frame3, sizeof(frame3)) == sizeof(frame3));
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sd_event_run(e, 0);
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assert_se(write(test_fd[1], frame4, sizeof(frame4)) == sizeof(frame4));
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sd_event_run(e, 0);
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assert_se(write(test_fd[1], frame5, sizeof(frame5)) == sizeof(frame5));
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sd_event_run(e, 0);
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assert_se(write(test_fd[1], frame6, sizeof(frame6)) == sizeof(frame6));
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sd_event_run(e, 0);
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assert_se(lldp_handler_calls == 6);
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assert_se(sd_lldp_get_neighbors(lldp, &neighbors) == 6);
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for (i = 0; i < 6; i++) {
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assert_se(sd_lldp_neighbor_get_chassis_id(neighbors[i], &type, &data, &length) == 0);
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assert_se(type == SD_LLDP_CHASSIS_SUBTYPE_CHASSIS_COMPONENT);
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expected_length = strlen(expected[2 * i]);
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assert_se(length == expected_length);
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assert_se(memcmp(data, expected[2 * i], expected_length) == 0);
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assert_se(sd_lldp_neighbor_get_port_id(neighbors[i], &type, &data, &length) == 0);
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assert_se(type == SD_LLDP_PORT_SUBTYPE_PORT_COMPONENT);
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expected_length = strlen(expected[2 * i + 1]);
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assert_se(length == expected_length);
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assert_se(memcmp(data, expected[2 * i + 1], expected_length) == 0);
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assert_se(sd_lldp_neighbor_get_ttl(neighbors[i], &ttl) == 0);
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assert_se(ttl == 120);
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}
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for (i = 0; i < 6; i++)
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sd_lldp_neighbor_unref(neighbors[i]);
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free(neighbors);
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assert_se(stop_lldp(lldp) == 0);
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}
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int main(int argc, char *argv[]) {
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_cleanup_(sd_event_unrefp) sd_event *e = NULL;
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@ -239,6 +368,7 @@ int main(int argc, char *argv[]) {
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test_receive_basic_packet(e);
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test_receive_incomplete_packet(e);
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test_receive_oui_packet(e);
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test_multiple_neighbors_sorted(e);
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return 0;
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}
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