from tests.dialects.test_dialect import Validator


class TestTSQL(Validator):
    dialect = "tsql"

    def test_tsql(self):
        self.validate_identity('SELECT "x"."y" FROM foo')

        self.validate_all(
            "SELECT CAST([a].[b] AS SMALLINT) FROM foo",
            write={
                "tsql": 'SELECT CAST("a"."b" AS SMALLINT) FROM foo',
                "spark": "SELECT CAST(`a`.`b` AS SHORT) FROM foo",
            },
        )

        self.validate_all(
            "CONVERT(INT, CONVERT(NUMERIC, '444.75'))",
            write={
                "mysql": "CAST(CAST('444.75' AS DECIMAL) AS INT)",
                "tsql": "CAST(CAST('444.75' AS NUMERIC) AS INTEGER)",
            },
        )

    def test_types(self):
        self.validate_identity("CAST(x AS XML)")
        self.validate_identity("CAST(x AS UNIQUEIDENTIFIER)")
        self.validate_identity("CAST(x AS MONEY)")
        self.validate_identity("CAST(x AS SMALLMONEY)")
        self.validate_identity("CAST(x AS ROWVERSION)")
        self.validate_identity("CAST(x AS IMAGE)")
        self.validate_identity("CAST(x AS SQL_VARIANT)")
        self.validate_identity("CAST(x AS BIT)")
        self.validate_all(
            "CAST(x AS DATETIME2)",
            read={
                "": "CAST(x AS DATETIME)",
            },
            write={
                "mysql": "CAST(x AS DATETIME)",
                "tsql": "CAST(x AS DATETIME2)",
            },
        )
