[PATCH 10/11] platform/chrome: cros_ec_proto: add Kunit test for empty payload

Tzung-Bi Shih
2022-06-15T05:13:52Z

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@kernel.org>
---
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 2a6b099fbfd9..7d45e5022221 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),
{}
};

--
2.36.1.476.g0c4daa206d-goog