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from sqlalchemy import column

from superset.db_engine_specs.pinot import PinotEngineSpec
from tests.db_engine_specs.base_tests import DbEngineSpecTestCase


class PinotTestCase(DbEngineSpecTestCase):
    """ Tests pertaining to our Pinot database support """

    def test_pinot_time_expression_sec_one_1m_grain(self):
        col = column("tstamp")
        expr = PinotEngineSpec.get_timestamp_expr(col, "epoch_s", "P1M")
        result = str(expr.compile())
        self.assertEqual(
            result,
            "DATETIMECONVERT(tstamp, '1:SECONDS:EPOCH', '1:SECONDS:EPOCH', '1:MONTHS')",
        )  # noqa