code: def test_epoch_timestamp(self):
      epoch_time = 1609459200  # January 1, 2021
      assert pretty_date(epoch_time) == "3 years ago"
  
file_path: dstack/src/tests/_internal/utils/test_common.py
imports: from datetime import datetime, timedelta, timezone
  from freezegun import freeze_time
  from dstack._internal.utils.common import pretty_date
label_desc: Use image node_id 13 for calling the TestPrettyDate obj's underlying member method code with example usage: obj.test_epoch_timestamp() without return types