linux-kernel - Re: [PATCH v3 11/23] platform/chrome: cros_ec_proto: add Kunit test for getting legacy info

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Message-ID: <CABXOdTcg0mThL_rgNWtAs4izk8mWUiQ4+86TpKF8VhvgL3+1sA@mail.gmail.com>
Date:   Wed, 8 Jun 2022 09:14:19 -0700
From:   Guenter Roeck <groeck@...gle.com>
To:     Tzung-Bi Shih <tzungbi@...nel.org>
Cc:     Benson Leung <bleung@...omium.org>,
        Guenter Roeck <groeck@...omium.org>,
        "open list:CHROME HARDWARE PLATFORM SUPPORT" 
        <chrome-platform@...ts.linux.dev>,
        linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3 11/23] platform/chrome: cros_ec_proto: add Kunit test
 for getting legacy info

On Wed, Jun 8, 2022 at 4:08 AM Tzung-Bi Shih <tzungbi@...nel.org> wrote:
>
> cros_ec_get_proto_info_legacy() expects to receive
> sizeof(struct ec_response_hello) from send_command().  The payload is
> valid only if the return value is positive.
>
> Add a Kunit test for returning 0 from send_command() in
> cros_ec_get_proto_info_legacy().
>
> Signed-off-by: Tzung-Bi Shih <tzungbi@...nel.org>

Reviewed-by: Guenter Roeck <groeck@...omium.org>

> ---
> No v2.  New and separated from the original series.
>
>  drivers/platform/chrome/cros_ec_proto_test.c | 49 ++++++++++++++++++++
>  1 file changed, 49 insertions(+)
>
> diff --git a/drivers/platform/chrome/cros_ec_proto_test.c b/drivers/platform/chrome/cros_ec_proto_test.c
> index 8e47cb70dc8b..63071af81c94 100644
> --- a/drivers/platform/chrome/cros_ec_proto_test.c
> +++ b/drivers/platform/chrome/cros_ec_proto_test.c
> @@ -751,6 +751,54 @@ static void cros_ec_proto_test_query_all_legacy_data_error(struct kunit *test)
>         }
>  }
>
> +static void cros_ec_proto_test_query_all_legacy_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;
> +
> +       /* For cros_ec_get_proto_info() without passthru. */
> +       {
> +               mock = cros_kunit_ec_xfer_mock_addx(test, 0, EC_RES_INVALID_COMMAND, 0);
> +               KUNIT_ASSERT_PTR_NE(test, mock, NULL);
> +       }
> +
> +       /* For cros_ec_get_proto_info_legacy(). */
> +       {
> +               mock = cros_kunit_ec_xfer_mock_add(test, 0);
> +               KUNIT_ASSERT_PTR_NE(test, mock, NULL);
> +       }
> +
> +       cros_ec_proto_test_query_all_pretest(test);
> +       ret = cros_ec_query_all(ec_dev);
> +       KUNIT_EXPECT_EQ(test, ret, -EPROTO);
> +       KUNIT_EXPECT_EQ(test, ec_dev->proto_version, EC_PROTO_VERSION_UNKNOWN);
> +
> +       /* For cros_ec_get_proto_info() without passthru. */
> +       {
> +               mock = cros_kunit_ec_xfer_mock_next();
> +               KUNIT_EXPECT_PTR_NE(test, mock, NULL);
> +
> +               KUNIT_EXPECT_EQ(test, mock->msg.version, 0);
> +               KUNIT_EXPECT_EQ(test, mock->msg.command, EC_CMD_GET_PROTOCOL_INFO);
> +               KUNIT_EXPECT_EQ(test, mock->msg.insize,
> +                               sizeof(struct ec_response_get_protocol_info));
> +               KUNIT_EXPECT_EQ(test, mock->msg.outsize, 0);
> +       }
> +
> +       /* For cros_ec_get_proto_info_legacy(). */
> +       {
> +               mock = cros_kunit_ec_xfer_mock_next();
> +               KUNIT_EXPECT_PTR_NE(test, mock, NULL);
> +
> +               KUNIT_EXPECT_EQ(test, mock->msg.version, 0);
> +               KUNIT_EXPECT_EQ(test, mock->msg.command, EC_CMD_HELLO);
> +               KUNIT_EXPECT_EQ(test, mock->msg.insize, sizeof(struct ec_response_hello));
> +               KUNIT_EXPECT_EQ(test, mock->msg.outsize, sizeof(struct ec_params_hello));
> +       }
> +}
> +
>  static void cros_ec_proto_test_query_all_no_mkbp(struct kunit *test)
>  {
>         struct cros_ec_proto_test_priv *priv = test->priv;
> @@ -1135,6 +1183,7 @@ static struct kunit_case cros_ec_proto_test_cases[] = {
>         KUNIT_CASE(cros_ec_proto_test_query_all_legacy_xfer_error),
>         KUNIT_CASE(cros_ec_proto_test_query_all_legacy_return_error),
>         KUNIT_CASE(cros_ec_proto_test_query_all_legacy_data_error),
> +       KUNIT_CASE(cros_ec_proto_test_query_all_legacy_return0),
>         KUNIT_CASE(cros_ec_proto_test_query_all_no_mkbp),
>         KUNIT_CASE(cros_ec_proto_test_query_all_no_host_sleep),
>         KUNIT_CASE(cros_ec_proto_test_query_all_default_wake_mask_return_error),
> --
> 2.36.1.255.ge46751e96f-goog
>