tests: drivers: can: api: add capabilities test

Test that the CAN controller supports getting the supported capabilities.

Signed-off-by: Henrik Brix Andersen <[email protected]>

Author: henrikbrixandersen

tests/drivers/can/api/src/main.c

@@ -598,6 +598,19 @@ static void test_get_core_clock(void)
 	zassert_not_equal(rate, 0, "CAN core clock rate is 0");
 }
 
+/**
+ * @brief Test getting the CAN controller capabilities.
+ */
+static void test_get_capabilities(void)
+{
+	can_mode_t cap;
+	int err;
+
+	err = can_get_capabilities(can_dev, &cap);
+	zassert_equal(err, 0, "failed to get CAN capabilities (err %d)", err);
+	zassert_not_equal(cap & CAN_MODE_LOOPBACK, 0, "CAN loopback mode not supported");
+}
+
 /**
  * @brief CAN state change callback.
  */
@@ -1009,6 +1022,7 @@ void test_main(void)
 	/* Tests without callbacks can run in userspace */
 	ztest_test_suite(can_api_tests,
 			 ztest_user_unit_test(test_get_core_clock),
+			 ztest_user_unit_test(test_get_capabilities),
 			 ztest_unit_test(test_set_state_change_callback),
 			 ztest_user_unit_test(test_set_bitrate_too_high),
 			 ztest_user_unit_test(test_set_bitrate),