How to use the pypuppetdb.QueryBuilder.GreaterEqualOperator function in pypuppetdb

def test_greater_equal_operator(self):
        assert str(GreaterEqualOperator("uptime_days", 3))\
            == '[">=", "uptime_days", 3]'
        assert str(GreaterEqualOperator(
            "start_time",
            "2016-05-11T23:53:29.962Z"))\
            == '[">=", "start_time", "2016-05-11T23:53:29.962Z"]'
        assert str(GreaterEqualOperator(['parameter', 'version'], 4.0))\
            == '[">=", ["parameter", "version"], 4.0]'
        assert str(GreaterEqualOperator("report_timestamp",
                                        datetime.datetime(2016, 6, 11)))\
            == '[">=", "report_timestamp", "2016-06-11 00:00:00"]'

def test_greater_equal_operator(self):
        assert str(GreaterEqualOperator("uptime_days", 3))\
            == '[">=", "uptime_days", 3]'
        assert str(GreaterEqualOperator(
            "start_time",
            "2016-05-11T23:53:29.962Z"))\
            == '[">=", "start_time", "2016-05-11T23:53:29.962Z"]'
        assert str(GreaterEqualOperator(['parameter', 'version'], 4.0))\
            == '[">=", ["parameter", "version"], 4.0]'
        assert str(GreaterEqualOperator("report_timestamp",
                                        datetime.datetime(2016, 6, 11)))\
            == '[">=", "report_timestamp", "2016-06-11 00:00:00"]'

def test_greater_equal_operator(self):
        assert str(GreaterEqualOperator("uptime_days", 3))\
            == '[">=", "uptime_days", 3]'
        assert str(GreaterEqualOperator(
            "start_time",
            "2016-05-11T23:53:29.962Z"))\
            == '[">=", "start_time", "2016-05-11T23:53:29.962Z"]'
        assert str(GreaterEqualOperator(['parameter', 'version'], 4.0))\
            == '[">=", ["parameter", "version"], 4.0]'
        assert str(GreaterEqualOperator("report_timestamp",
                                        datetime.datetime(2016, 6, 11)))\
            == '[">=", "report_timestamp", "2016-06-11 00:00:00"]'

def test_greater_equal_operator(self):
        assert str(GreaterEqualOperator("uptime_days", 3))\
            == '[">=", "uptime_days", 3]'
        assert str(GreaterEqualOperator(
            "start_time",
            "2016-05-11T23:53:29.962Z"))\
            == '[">=", "start_time", "2016-05-11T23:53:29.962Z"]'
        assert str(GreaterEqualOperator(['parameter', 'version'], 4.0))\
            == '[">=", ["parameter", "version"], 4.0]'
        assert str(GreaterEqualOperator("report_timestamp",
                                        datetime.datetime(2016, 6, 11)))\
            == '[">=", "report_timestamp", "2016-06-11 00:00:00"]'

def _build_query(env, start, end, certname=None):
    """Build a extract query with optional certname and environment."""
    query = ExtractOperator()
    query.add_field(FunctionOperator('count'))
    query.add_field('status')
    subquery = AndOperator()
    subquery.add(GreaterEqualOperator('producer_timestamp', start))
    subquery.add(LessOperator('producer_timestamp', end))
    if certname is not None:
        subquery.add(EqualsOperator('certname', certname))
    if env != '*':
        subquery.add(EqualsOperator('environment', env))
    query.add_query(subquery)
    query.add_group_by("status")
    return query

def __init__(self, field, value):
        super(GreaterEqualOperator, self).__init__(">=", field, value)