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from sqlalchemy import column

from superset.db_engine_specs.bigquery import BigQueryEngineSpec
from tests.db_engine_specs.base_tests import DbEngineSpecTestCase


class BigQueryTestCase(DbEngineSpecTestCase):
    def test_bigquery_sqla_column_label(self):
        label = BigQueryEngineSpec.make_label_compatible(column("Col").name)
        label_expected = "Col"
        self.assertEqual(label, label_expected)

        label = BigQueryEngineSpec.make_label_compatible(column("SUM(x)").name)
        label_expected = "SUM_x__5f110"
        self.assertEqual(label, label_expected)

        label = BigQueryEngineSpec.make_label_compatible(column("SUM[x]").name)
        label_expected = "SUM_x__7ebe1"
        self.assertEqual(label, label_expected)

        label = BigQueryEngineSpec.make_label_compatible(column("12345_col").name)
        label_expected = "_12345_col_8d390"
        self.assertEqual(label, label_expected)

    def test_convert_dttm(self):
        dttm = self.get_dttm()

        self.assertEqual(
            BigQueryEngineSpec.convert_dttm("DATE", dttm), "CAST('2019-01-02' AS DATE)"
        )

        self.assertEqual(
            BigQueryEngineSpec.convert_dttm("DATETIME", dttm),
            "CAST('2019-01-02T03:04:05.678900' AS DATETIME)",
        )

        self.assertEqual(
            BigQueryEngineSpec.convert_dttm("TIMESTAMP", dttm),
            "CAST('2019-01-02T03:04:05.678900' AS TIMESTAMP)",
        )