TC-TIMESYNC-2.2: Add missing step (#29416)

* TC-TIMESYNC-2.2: Add missing step

* Update src/python_testing/TC_TIMESYNC_2_2.py

* Update src/python_testing/TC_TIMESYNC_2_2.py

Co-authored-by: Boris Zbarsky <bzbarsky@apple.com>

---------

Co-authored-by: Boris Zbarsky <bzbarsky@apple.com>

src/python_testing/TC_TIMESYNC_2_2.py

@@ -63,6 +63,7 @@ async def test_TC_TIMESYNC_2_2(self):
  "Granularity out of expected range")
  asserts.assert_not_equal(granularity_dut, time_cluster.Enums.GranularityEnum.kNoTimeGranularity)
 
+ self.print_step(4, "Read UTC time")
  th_utc = utc_time_in_matter_epoch()
  utc_dut = await self.read_ts_attribute_expect_success(endpoint=endpoint, attribute=attributes.UTCTime)
  asserts.assert_is_not(utc_dut, NullValue, "Received null value for UTCTime after set")
@@ -72,6 +73,12 @@ async def test_TC_TIMESYNC_2_2(self):
  tolerance = timedelta(minutes=1)
  compare_time(received=utc_dut, utc=th_utc, tolerance=tolerance)
 
+ self.print_step(5, "Read time source")
+ if self.check_pics("TIMESYNC.S.A0002"):
+ source = await self.read_ts_attribute_expect_success(endpoint=endpoint, attribute=attributes.TimeSource)
+ if utc_dut_initial is NullValue:
+ asserts.assert_equal(source, Clusters.Objects.TimeSynchronization.Enums.TimeSourceEnum.kAdmin)
+
 
 if __name__ == "__main__":
  default_matter_test_main()