linux-kernel - Re: [PATCH 4/7] platform/chrome: cros_ec_proto: add Kunit tests for get_host

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Message-ID: <CABXOdTfuiVan-Rascq1X-hrvf-68FPu636G1T-v6fA-kUhMArg@mail.gmail.com>
Date:   Thu, 23 Jun 2022 09:38:10 -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 4/7] platform/chrome: cros_ec_proto: add Kunit tests for get_host_event

On Tue, Jun 21, 2022 at 9:11 PM Tzung-Bi Shih <tzungbi@...nel.org> wrote:
>
> cros_ec_get_host_event() performs some sanity checks, parses
> `ec_dev->event_data.data.host_event`, and returns bitmap of
> EC_HOST_EVENT_*.
>
> Add Kunit tests for cros_ec_get_host_event().
>
> Signed-off-by: Tzung-Bi Shih <tzungbi@...nel.org>

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

> ---
>  drivers/platform/chrome/cros_ec_proto_test.c | 59 ++++++++++++++++++++
>  1 file changed, 59 insertions(+)
>
> diff --git a/drivers/platform/chrome/cros_ec_proto_test.c b/drivers/platform/chrome/cros_ec_proto_test.c
> index 64c4b79f7a0c..dce9fa3b9c8d 100644
> --- a/drivers/platform/chrome/cros_ec_proto_test.c
> +++ b/drivers/platform/chrome/cros_ec_proto_test.c
> @@ -2312,6 +2312,61 @@ static void cros_ec_proto_test_get_next_event_mkbp_event_host_event_masked(struc
>         }
>  }
>
> +static void cros_ec_proto_test_get_host_event_no_mkbp_event(struct kunit *test)
> +{
> +       struct cros_ec_proto_test_priv *priv = test->priv;
> +       struct cros_ec_device *ec_dev = &priv->ec_dev;
> +       int ret;
> +
> +       ec_dev->mkbp_event_supported = 0;
> +
> +       ret = cros_ec_get_host_event(ec_dev);
> +       KUNIT_EXPECT_EQ(test, ret, 0);
> +}
> +
> +static void cros_ec_proto_test_get_host_event_not_host_event(struct kunit *test)
> +{
> +       struct cros_ec_proto_test_priv *priv = test->priv;
> +       struct cros_ec_device *ec_dev = &priv->ec_dev;
> +       int ret;
> +
> +       ec_dev->mkbp_event_supported = 1;
> +       ec_dev->event_data.event_type = EC_MKBP_EVENT_FINGERPRINT;
> +
> +       ret = cros_ec_get_host_event(ec_dev);
> +       KUNIT_EXPECT_EQ(test, ret, 0);
> +}
> +
> +static void cros_ec_proto_test_get_host_event_wrong_event_size(struct kunit *test)
> +{
> +       struct cros_ec_proto_test_priv *priv = test->priv;
> +       struct cros_ec_device *ec_dev = &priv->ec_dev;
> +       int ret;
> +
> +       ec_dev->mkbp_event_supported = 1;
> +       ec_dev->event_data.event_type = EC_MKBP_EVENT_HOST_EVENT;
> +       ec_dev->event_size = 0xff;
> +
> +       ret = cros_ec_get_host_event(ec_dev);
> +       KUNIT_EXPECT_EQ(test, ret, 0);
> +}
> +
> +static void cros_ec_proto_test_get_host_event_normal(struct kunit *test)
> +{
> +       struct cros_ec_proto_test_priv *priv = test->priv;
> +       struct cros_ec_device *ec_dev = &priv->ec_dev;
> +       int ret;
> +
> +       ec_dev->mkbp_event_supported = 1;
> +       ec_dev->event_data.event_type = EC_MKBP_EVENT_HOST_EVENT;
> +       ec_dev->event_size = sizeof(ec_dev->event_data.data.host_event);
> +       put_unaligned_le32(EC_HOST_EVENT_MASK(EC_HOST_EVENT_RTC),
> +                          &ec_dev->event_data.data.host_event);
> +
> +       ret = cros_ec_get_host_event(ec_dev);
> +       KUNIT_EXPECT_EQ(test, ret, EC_HOST_EVENT_MASK(EC_HOST_EVENT_RTC));
> +}
> +
>  static void cros_ec_proto_test_release(struct device *dev)
>  {
>  }
> @@ -2401,6 +2456,10 @@ static struct kunit_case cros_ec_proto_test_cases[] = {
>         KUNIT_CASE(cros_ec_proto_test_get_next_event_mkbp_event_version2),
>         KUNIT_CASE(cros_ec_proto_test_get_next_event_mkbp_event_host_event_rtc),
>         KUNIT_CASE(cros_ec_proto_test_get_next_event_mkbp_event_host_event_masked),
> +       KUNIT_CASE(cros_ec_proto_test_get_host_event_no_mkbp_event),
> +       KUNIT_CASE(cros_ec_proto_test_get_host_event_not_host_event),
> +       KUNIT_CASE(cros_ec_proto_test_get_host_event_wrong_event_size),
> +       KUNIT_CASE(cros_ec_proto_test_get_host_event_normal),
>         {}
>  };
>
> --
> 2.37.0.rc0.104.g0611611a94-goog
>