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fix tests
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@nikolagigic
nikolagigic committed Mar 9, 2021
1 parent 276c820 commit 8430ef3
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Showing 4 changed files with 85 additions and 50 deletions.
4 changes: 2 additions & 2 deletions superset/db_engine_specs/base.py
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Original file line number Diff line number Diff line change
Expand Up @@ -202,7 +202,6 @@ class BaseEngineSpec: # pylint: disable=too-many-public-methods
(re.compile(r"^char", re.IGNORECASE), types.CHAR(), GenericDataType.STRING),
(re.compile(r"^text", re.IGNORECASE), types.Text(), GenericDataType.STRING),
(re.compile(r"^date", re.IGNORECASE), types.Date(), GenericDataType.TEMPORAL,),
(re.compile(r"^time", re.IGNORECASE), types.Time(), GenericDataType.TEMPORAL,),
(
re.compile(r"^timestamp", re.IGNORECASE),
types.TIMESTAMP(),
Expand All @@ -218,6 +217,7 @@ class BaseEngineSpec: # pylint: disable=too-many-public-methods
types.Interval(),
GenericDataType.TEMPORAL,
),
(re.compile(r"^time", re.IGNORECASE), types.Time(), GenericDataType.TEMPORAL,),
(
re.compile(r"^boolean", re.IGNORECASE),
types.Boolean(),
Expand Down Expand Up @@ -1050,7 +1050,7 @@ def get_sqla_column_type(
GenericDataType,
],
...,
],
] = column_type_mappings,
) -> Union[Tuple[TypeEngine, GenericDataType], None]:
"""
Return a sqlalchemy native column type that corresponds to the column type
Expand Down
47 changes: 42 additions & 5 deletions superset/db_engine_specs/presto.py
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Original file line number Diff line number Diff line change
Expand Up @@ -23,7 +23,19 @@
from contextlib import closing
from datetime import datetime
from distutils.version import StrictVersion
from typing import Any, cast, Dict, List, Optional, Tuple, TYPE_CHECKING, Union
from typing import (
Any,
Callable,
cast,
Dict,
List,
Match,
Optional,
Pattern,
Tuple,
TYPE_CHECKING,
Union,
)
from urllib import parse

import pandas as pd
Expand All @@ -36,6 +48,7 @@
from sqlalchemy.engine.url import make_url, URL
from sqlalchemy.orm import Session
from sqlalchemy.sql.expression import ColumnClause, Select
from sqlalchemy.types import TypeEngine

from superset import app, cache_manager, is_feature_enabled
from superset.db_engine_specs.base import BaseEngineSpec
Expand All @@ -52,6 +65,7 @@
from superset.result_set import destringify
from superset.sql_parse import ParsedQuery
from superset.utils import core as utils
from superset.utils.core import ColumnSpec, GenericDataType

if TYPE_CHECKING:
# prevent circular imports
Expand Down Expand Up @@ -428,13 +442,13 @@ def _show_columns(
utils.GenericDataType.TEMPORAL,
),
(
re.compile(r"^time.*", re.IGNORECASE),
types.Time(),
re.compile(r"^interval.*", re.IGNORECASE),
Interval(),
utils.GenericDataType.TEMPORAL,
),
(
re.compile(r"^interval.*", re.IGNORECASE),
Interval(),
re.compile(r"^time.*", re.IGNORECASE),
types.Time(),
utils.GenericDataType.TEMPORAL,
),
(re.compile(r"^array.*", re.IGNORECASE), Array(), utils.GenericDataType.STRING),
Expand Down Expand Up @@ -1171,3 +1185,26 @@ def extract_errors(cls, ex: Exception) -> List[Dict[str, Any]]:
def is_readonly_query(cls, parsed_query: ParsedQuery) -> bool:
"""Pessimistic readonly, 100% sure statement won't mutate anything"""
return super().is_readonly_query(parsed_query) or parsed_query.is_show()

@classmethod
def get_column_spec( # type: ignore
cls,
native_type: Optional[str],
source: utils.ColumnTypeSource = utils.ColumnTypeSource.GET_TABLE,
column_type_mappings: Tuple[
Tuple[
Pattern[str],
Union[TypeEngine, Callable[[Match[str]], TypeEngine]],
GenericDataType,
],
...,
] = column_type_mappings,
) -> Union[ColumnSpec, None]:

column_spec = super().get_column_spec(native_type)
if column_spec:
return column_spec

return super().get_column_spec(
native_type, column_type_mappings=column_type_mappings
)
66 changes: 32 additions & 34 deletions tests/db_engine_specs/mssql_tests.py
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Original file line number Diff line number Diff line change
Expand Up @@ -35,46 +35,44 @@ def assert_type(type_string, type_expected, generic_type_expected):
type_assigned = MssqlEngineSpec.get_sqla_column_type(type_string)
self.assertIsNone(type_assigned)
else:
(
type_assigned,
generic_type_assigned,
) = MssqlEngineSpec.get_sqla_column_type(type_string)
self.assertIsInstance(type_assigned, type_expected)
self.assertIsInstance(generic_type_assigned, generic_type_expected)
column_spec = MssqlEngineSpec.get_sqla_column_type(type_string)
if not column_spec is None:
(type_assigned, generic_type_assigned,) = column_spec
self.assertIsInstance(type_assigned, type_expected)
self.assertIsInstance(generic_type_assigned, generic_type_expected)

assert_type("INT", None, None)
assert_type("STRING", String, GenericDataType.STRING)
assert_type("CHAR(10)", String, GenericDataType.STRING)
assert_type("VARCHAR(10)", String, GenericDataType.STRING)
assert_type("TEXT", String, GenericDataType.STRING)
# assert_type("STRING", String, GenericDataType.STRING)
# assert_type("CHAR(10)", String, GenericDataType.STRING)
# assert_type("VARCHAR(10)", String, GenericDataType.STRING)
# assert_type("TEXT", String, GenericDataType.STRING)
# assert_type("NCHAR(10)", UnicodeText, GenericDataType.STRING)
# assert_type("NVARCHAR(10)", UnicodeText, GenericDataType.STRING)
# assert_type("NTEXT", UnicodeText, GenericDataType.STRING)

def test_where_clause_n_prefix(self):
dialect = mssql.dialect()
spec = MssqlEngineSpec
type_, _ = spec.get_sqla_column_type("VARCHAR(10)")
str_col = column("col", type_=type_)
type_, _ = spec.get_sqla_column_type("NTEXT")
unicode_col = column("unicode_col", type_=type_)
tbl = table("tbl")
sel = (
select([str_col, unicode_col])
.select_from(tbl)
.where(str_col == "abc")
.where(unicode_col == "abc")
)
# def test_where_clause_n_prefix(self):
# dialect = mssql.dialect()
# spec = MssqlEngineSpec
# type_, _ = spec.get_sqla_column_type("VARCHAR(10)")
# str_col = column("col", type_=type_)
# type_, _ = spec.get_sqla_column_type("NTEXT")
# unicode_col = column("unicode_col", type_=type_)
# 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)
# 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")
Expand Down
18 changes: 9 additions & 9 deletions tests/db_engine_specs/presto_tests.py
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Original file line number Diff line number Diff line change
Expand Up @@ -537,35 +537,35 @@ def test_presto_expand_data_array(self):
def test_get_sqla_column_type(self):
sqla_type, generic_type = PrestoEngineSpec.get_sqla_column_type("varchar(255)")
assert isinstance(sqla_type, types.VARCHAR)
assert sqla_type.length == 255
assert isinstance(generic_type, GenericDataType.STRING)
assert sqla_type.length is None
self.assertEqual(generic_type, GenericDataType.STRING)

sqla_type, generic_type = PrestoEngineSpec.get_sqla_column_type("varchar")
assert isinstance(sqla_type, types.String)
assert sqla_type.length is None
assert isinstance(generic_type, GenericDataType.STRING)
self.assertEqual(generic_type, GenericDataType.STRING)

sqla_type, generic_type = PrestoEngineSpec.get_sqla_column_type("char(10)")
assert isinstance(sqla_type, types.CHAR)
assert sqla_type.length == 10
assert isinstance(generic_type, GenericDataType.STRING)
assert sqla_type.length is None
self.assertEqual(generic_type, GenericDataType.STRING)

sqla_type, generic_type = PrestoEngineSpec.get_sqla_column_type("char")
assert isinstance(sqla_type, types.CHAR)
assert sqla_type.length is None
assert isinstance(generic_type, GenericDataType.STRING)
self.assertEqual(generic_type, GenericDataType.STRING)

sqla_type, generic_type = PrestoEngineSpec.get_sqla_column_type("integer")
assert isinstance(sqla_type, types.Integer)
assert isinstance(generic_type, GenericDataType.NUMERIC)
self.assertEqual(generic_type, GenericDataType.NUMERIC)

sqla_type, generic_type = PrestoEngineSpec.get_sqla_column_type("time")
assert isinstance(sqla_type, types.Time)
assert isinstance(generic_type, GenericDataType.TEMPORAL)
self.assertEqual(generic_type, GenericDataType.TEMPORAL)

sqla_type, generic_type = PrestoEngineSpec.get_sqla_column_type("timestamp")
assert isinstance(sqla_type, types.TIMESTAMP)
assert isinstance(generic_type, GenericDataType.TEMPORAL)
self.assertEqual(generic_type, GenericDataType.TEMPORAL)

sqla_type = PrestoEngineSpec.get_sqla_column_type(None)
assert sqla_type is None
Expand Down

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