mirror of https://github.com/apache/superset.git
124 lines
4.7 KiB
Python
124 lines
4.7 KiB
Python
# Licensed to the Apache Software Foundation (ASF) under one
|
|
# or more contributor license agreements. See the NOTICE file
|
|
# distributed with this work for additional information
|
|
# regarding copyright ownership. The ASF licenses this file
|
|
# to you under the Apache License, Version 2.0 (the
|
|
# "License"); you may not use this file except in compliance
|
|
# with the License. You may obtain a copy of the License at
|
|
#
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
|
#
|
|
# Unless required by applicable law or agreed to in writing,
|
|
# software distributed under the License is distributed on an
|
|
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
|
|
# KIND, either express or implied. See the License for the
|
|
# specific language governing permissions and limitations
|
|
# under the License.
|
|
import unittest.mock as mock
|
|
|
|
from sqlalchemy import column, table
|
|
from sqlalchemy.dialects import mssql
|
|
from sqlalchemy.dialects.mssql import DATE, NTEXT, NVARCHAR, TEXT, VARCHAR
|
|
from sqlalchemy.sql import select
|
|
from sqlalchemy.types import String, UnicodeText
|
|
|
|
from superset.db_engine_specs.base import BaseEngineSpec
|
|
from superset.db_engine_specs.mssql import MssqlEngineSpec
|
|
from tests.db_engine_specs.base_tests import DbEngineSpecTestCase
|
|
|
|
|
|
class MssqlEngineSpecTest(DbEngineSpecTestCase):
|
|
def test_mssql_column_types(self):
|
|
def assert_type(type_string, type_expected):
|
|
type_assigned = MssqlEngineSpec.get_sqla_column_type(type_string)
|
|
if type_expected is None:
|
|
self.assertIsNone(type_assigned)
|
|
else:
|
|
self.assertIsInstance(type_assigned, type_expected)
|
|
|
|
assert_type("INT", None)
|
|
assert_type("STRING", String)
|
|
assert_type("CHAR(10)", String)
|
|
assert_type("VARCHAR(10)", String)
|
|
assert_type("TEXT", String)
|
|
assert_type("NCHAR(10)", UnicodeText)
|
|
assert_type("NVARCHAR(10)", UnicodeText)
|
|
assert_type("NTEXT", UnicodeText)
|
|
|
|
def test_where_clause_n_prefix(self):
|
|
dialect = mssql.dialect()
|
|
spec = MssqlEngineSpec
|
|
str_col = column("col", type_=spec.get_sqla_column_type("VARCHAR(10)"))
|
|
unicode_col = column("unicode_col", type_=spec.get_sqla_column_type("NTEXT"))
|
|
tbl = table("tbl")
|
|
sel = (
|
|
select([str_col, unicode_col])
|
|
.select_from(tbl)
|
|
.where(str_col == "abc")
|
|
.where(unicode_col == "abc")
|
|
)
|
|
|
|
query = str(
|
|
sel.compile(dialect=dialect, compile_kwargs={"literal_binds": True})
|
|
)
|
|
query_expected = (
|
|
"SELECT col, unicode_col \n"
|
|
"FROM tbl \n"
|
|
"WHERE col = 'abc' AND unicode_col = N'abc'"
|
|
)
|
|
self.assertEqual(query, query_expected)
|
|
|
|
def test_time_exp_mixd_case_col_1y(self):
|
|
col = column("MixedCase")
|
|
expr = MssqlEngineSpec.get_timestamp_expr(col, None, "P1Y")
|
|
result = str(expr.compile(None, dialect=mssql.dialect()))
|
|
self.assertEqual(result, "DATEADD(year, DATEDIFF(year, 0, [MixedCase]), 0)")
|
|
|
|
def test_convert_dttm(self):
|
|
dttm = self.get_dttm()
|
|
test_cases = (
|
|
(
|
|
MssqlEngineSpec.convert_dttm("DATE", dttm),
|
|
"CONVERT(DATE, '2019-01-02', 23)",
|
|
),
|
|
(
|
|
MssqlEngineSpec.convert_dttm("DATETIME", dttm),
|
|
"CONVERT(DATETIME, '2019-01-02T03:04:05.678', 126)",
|
|
),
|
|
(
|
|
MssqlEngineSpec.convert_dttm("SMALLDATETIME", dttm),
|
|
"CONVERT(SMALLDATETIME, '2019-01-02 03:04:05', 20)",
|
|
),
|
|
)
|
|
|
|
for actual, expected in test_cases:
|
|
self.assertEqual(actual, expected)
|
|
|
|
@mock.patch.object(
|
|
MssqlEngineSpec, "pyodbc_rows_to_tuples", return_value="converted"
|
|
)
|
|
def test_fetch_data(self, mock_pyodbc_rows_to_tuples):
|
|
data = [(1, "foo")]
|
|
with mock.patch.object(
|
|
BaseEngineSpec, "fetch_data", return_value=data
|
|
) as mock_fetch:
|
|
result = MssqlEngineSpec.fetch_data(None, 0)
|
|
mock_pyodbc_rows_to_tuples.assert_called_once_with(data)
|
|
self.assertEqual(result, "converted")
|
|
|
|
def test_column_datatype_to_string(self):
|
|
test_cases = (
|
|
(DATE(), "DATE"),
|
|
(VARCHAR(length=255), "VARCHAR(255)"),
|
|
(VARCHAR(length=255, collation="utf8_general_ci"), "VARCHAR(255)"),
|
|
(NVARCHAR(length=128), "NVARCHAR(128)"),
|
|
(TEXT(), "TEXT"),
|
|
(NTEXT(collation="utf8_general_ci"), "NTEXT"),
|
|
)
|
|
|
|
for original, expected in test_cases:
|
|
actual = MssqlEngineSpec.column_datatype_to_string(
|
|
original, mssql.dialect()
|
|
)
|
|
self.assertEqual(actual, expected)
|