Re: [PATCH v2 09/10] platform/chrome: cros_ec_proto: add Kunit test for empty payload

[Guenter Roeck]

On Sun, Jul 17, 2022 at 10:10 PM Tzung-Bi Shih <tzungbi@xxxxxxxxxx> wrote:
>
> cros_ec_wait_until_complete() sends EC_CMD_GET_COMMS_STATUS which expects
> to receive sizeof(struct ec_response_get_comms_status) from
> cros_ec_xfer_command().
>
> Add Kunit test and expect to receive an error code when
> cros_ec_xfer_command() returns 0.
>
> Signed-off-by: Tzung-Bi Shih <tzungbi@xxxxxxxxxx>

Reviewed-by: Guenter Roeck <groeck@xxxxxxxxxxxx>

> ---
> No changes from v1.
>
>  drivers/platform/chrome/cros_ec_proto_test.c | 31 ++++++++++++++++++++
>  1 file changed, 31 insertions(+)
>
> diff --git a/drivers/platform/chrome/cros_ec_proto_test.c b/drivers/platform/chrome/cros_ec_proto_test.c
> index fbb872040711..d76e09b8a36a 100644
> --- a/drivers/platform/chrome/cros_ec_proto_test.c
> +++ b/drivers/platform/chrome/cros_ec_proto_test.c
> @@ -1934,6 +1934,36 @@ static void cros_ec_proto_test_cmd_xfer_in_progress_return_error(struct kunit *t
>         KUNIT_EXPECT_EQ(test, cros_kunit_ec_pkt_xfer_mock_called, 2);
>  }
>
> +static void cros_ec_proto_test_cmd_xfer_in_progress_return0(struct kunit *test)
> +{
> +       struct cros_ec_proto_test_priv *priv = test->priv;
> +       struct cros_ec_device *ec_dev = &priv->ec_dev;
> +       struct ec_xfer_mock *mock;
> +       int ret;
> +       struct cros_ec_command msg;
> +
> +       memset(&msg, 0, sizeof(msg));
> +
> +       ec_dev->pkt_xfer = cros_kunit_ec_pkt_xfer_mock;
> +
> +       /* For the first host command to return EC_RES_IN_PROGRESS. */
> +       {
> +               mock = cros_kunit_ec_xfer_mock_addx(test, 0, EC_RES_IN_PROGRESS, 0);
> +               KUNIT_ASSERT_PTR_NE(test, mock, NULL);
> +       }
> +
> +       /* For EC_CMD_GET_COMMS_STATUS. */
> +       {
> +               mock = cros_kunit_ec_xfer_mock_add(test, 0);
> +               KUNIT_ASSERT_PTR_NE(test, mock, NULL);
> +       }
> +
> +       ret = cros_ec_cmd_xfer(ec_dev, &msg);
> +       KUNIT_EXPECT_EQ(test, ret, -EPROTO);
> +
> +       KUNIT_EXPECT_EQ(test, cros_kunit_ec_pkt_xfer_mock_called, 2);
> +}
> +
>  static void cros_ec_proto_test_release(struct device *dev)
>  {
>  }
> @@ -2013,6 +2043,7 @@ static struct kunit_case cros_ec_proto_test_cases[] = {
>         KUNIT_CASE(cros_ec_proto_test_cmd_xfer_in_progress_retries_status_processing),
>         KUNIT_CASE(cros_ec_proto_test_cmd_xfer_in_progress_xfer_error),
>         KUNIT_CASE(cros_ec_proto_test_cmd_xfer_in_progress_return_error),
> +       KUNIT_CASE(cros_ec_proto_test_cmd_xfer_in_progress_return0),
>         {}
>  };
>
> --
> 2.37.0.170.g444d1eabd0-goog
>