tests/test_core.c

   1 #include <obd2/obd2.h>
   2 #include <check.h>
   3 #include <stdint.h>
   4 #include <stdio.h>
   5 #include <stdbool.h>
   6
   7 extern void setup();
   8 extern bool last_response_was_received;
   9 extern DiagnosticResponse last_response_received;
  10 extern DiagnosticShims SHIMS;
  11
  12 void response_received_handler(const DiagnosticResponse* response) {
  13     last_response_was_received = true;
  14     // TODO not sure if we can copy the struct like this
  15     last_response_received = *response;
  16 }
  17
  18 START_TEST (test_receive_wrong_arb_id)
  19 {
  20     DiagnosticRequest request = {
  21         arbitration_id: 0x7df,
  22         mode: OBD2_MODE_POWERTRAIN_DIAGNOSTIC_REQUEST
  23     };
  24     DiagnosticRequestHandle handle = diagnostic_request(&SHIMS, &request,
  25             response_received_handler);
  26
  27     fail_if(last_response_was_received);
  28     const uint8_t can_data[] = {0x2, request.mode + 0x40, 0x23};
  29     diagnostic_receive_can_frame(&SHIMS, &handle, request.arbitration_id,
  30             can_data, sizeof(can_data));
  31     fail_if(last_response_was_received);
  32 }
  33 END_TEST
  34
  35 START_TEST (test_send_diag_request)
  36 {
  37     DiagnosticRequest request = {
  38         arbitration_id: 0x7df,
  39         mode: OBD2_MODE_POWERTRAIN_DIAGNOSTIC_REQUEST
  40     };
  41     DiagnosticRequestHandle handle = diagnostic_request(&SHIMS, &request,
  42             response_received_handler);
  43
  44     fail_if(handle.completed);
  45
  46     fail_if(last_response_was_received);
  47     const uint8_t can_data[] = {0x2, request.mode + 0x40, 0x23};
  48     DiagnosticResponse response = diagnostic_receive_can_frame(&SHIMS, &handle,
  49             request.arbitration_id + 0x8, can_data, sizeof(can_data));
  50     fail_unless(response.success);
  51     fail_unless(response.completed);
  52     fail_unless(handle.completed);
  53     ck_assert(last_response_received.success);
  54     ck_assert_int_eq(last_response_received.arbitration_id,
  55             request.arbitration_id + 0x8);
  56     ck_assert_int_eq(last_response_received.mode, request.mode);
  57     ck_assert_int_eq(last_response_received.pid, 0);
  58     ck_assert_int_eq(last_response_received.payload_length, 1);
  59     ck_assert_int_eq(last_response_received.payload[0], can_data[2]);
  60 }
  61 END_TEST
  62
  63 START_TEST (test_request_pid_standard)
  64 {
  65     DiagnosticRequestHandle handle = diagnostic_request_pid(&SHIMS,
  66             DIAGNOSTIC_STANDARD_PID, 0x2, response_received_handler);
  67
  68     fail_if(last_response_was_received);
  69     const uint8_t can_data[] = {0x3, 0x1 + 0x40, 0x2, 0x45};
  70     // TODO need a constant for the 7df broadcast functional request
  71     diagnostic_receive_can_frame(&SHIMS, &handle, 0x7df + 0x8,
  72             can_data, sizeof(can_data));
  73     fail_unless(last_response_was_received);
  74     ck_assert(last_response_received.success);
  75     ck_assert_int_eq(last_response_received.arbitration_id,
  76             0x7df + 0x8);
  77     ck_assert_int_eq(last_response_received.mode, 0x1);
  78     ck_assert_int_eq(last_response_received.pid, 0x2);
  79     ck_assert_int_eq(last_response_received.payload_length, 1);
  80     ck_assert_int_eq(last_response_received.payload[0], can_data[3]);
  81 }
  82 END_TEST
  83
  84 START_TEST (test_request_pid_enhanced)
  85 {
  86     DiagnosticRequestHandle handle = diagnostic_request_pid(&SHIMS,
  87             DIAGNOSTIC_ENHANCED_PID, 0x2, response_received_handler);
  88
  89     fail_if(last_response_was_received);
  90     const uint8_t can_data[] = {0x4, 0x1 + 0x40, 0x0, 0x2, 0x45};
  91     // TODO need a constant for the 7df broadcast functional request
  92     diagnostic_receive_can_frame(&SHIMS, &handle, 0x7df + 0x8, can_data,
  93             sizeof(can_data));
  94     fail_unless(last_response_was_received);
  95     ck_assert(last_response_received.success);
  96     ck_assert_int_eq(last_response_received.arbitration_id,
  97             0x7df + 0x8);
  98     // TODO should we set it back to the original mode, or leave as mode + 0x40?
  99     ck_assert_int_eq(last_response_received.mode, 0x22);
 100     ck_assert_int_eq(last_response_received.pid, 0x2);
 101     ck_assert_int_eq(last_response_received.payload_length, 1);
 102     ck_assert_int_eq(last_response_received.payload[0], can_data[4]);
 103 }
 104 END_TEST
 105
 106 Suite* testSuite(void) {
 107     Suite* s = suite_create("obd2");
 108     TCase *tc_core = tcase_create("core");
 109     tcase_add_checked_fixture(tc_core, setup, NULL);
 110     tcase_add_test(tc_core, test_send_diag_request);
 111     tcase_add_test(tc_core, test_receive_wrong_arb_id);
 112     tcase_add_test(tc_core, test_request_pid_standard);
 113     tcase_add_test(tc_core, test_request_pid_enhanced);
 114
 115     // TODO these are future work:
 116     // TODO test request MIL
 117     // TODO test request VIN
 118     // TODO test request DTC
 119     // TODO test clear DTC
 120     // TODO test enumerate PIDs
 121     suite_add_tcase(s, tc_core);
 122
 123     return s;
 124 }
 125
 126 int main(void) {
 127     int numberFailed;
 128     Suite* s = testSuite();
 129     SRunner *sr = srunner_create(s);
 130     // Don't fork so we can actually use gdb
 131     srunner_set_fork_status(sr, CK_NOFORK);
 132     srunner_run_all(sr, CK_NORMAL);
 133     numberFailed = srunner_ntests_failed(sr);
 134     srunner_free(sr);
 135     return (numberFailed == 0) ? 0 : 1;
 136 }