def test_datetime_format_string():
result = Gitget._datetime_format("1234567890")
assert result == "2009-02-13T23:31:30Z"
def test_datetime_format_int():
result = Gitget._datetime_format(1234567890)
assert result == "2009-02-13T23:31:30Z"
def test_datetime_format_returns_string():
result = Gitget._datetime_format("1234567890")
assert isinstance(result, str)
