fix(redshift): convert_dttm method for redshift dataset and tests (ap…

…ache#26283)

Co-authored-by: GauravM <[email protected]>

superset/db_engine_specs/postgres.py

@@ -182,6 +182,19 @@ def fetch_data(cls, cursor: Any, limit: int | None = None) -> list[tuple[Any, ..
     def epoch_to_dttm(cls) -> str:
         return "(timestamp 'epoch' + {col} * interval '1 second')"
 
+    @classmethod
+    def convert_dttm(
+        cls, target_type: str, dttm: datetime, db_extra: dict[str, Any] | None = None
+    ) -> str | None:
+        sqla_type = cls.get_sqla_column_type(target_type)
+
+        if isinstance(sqla_type, Date):
+            return f"TO_DATE('{dttm.date().isoformat()}', 'YYYY-MM-DD')"
+        if isinstance(sqla_type, DateTime):
+            dttm_formatted = dttm.isoformat(sep=" ", timespec="microseconds")
+            return f"""TO_TIMESTAMP('{dttm_formatted}', 'YYYY-MM-DD HH24:MI:SS.US')"""
+        return None
+
 
 class PostgresEngineSpec(BasicParametersMixin, PostgresBaseEngineSpec):
     engine = "postgresql"
@@ -357,19 +370,6 @@ def get_table_names(
             inspector.get_foreign_table_names(schema)
         )
 
-    @classmethod
-    def convert_dttm(
-        cls, target_type: str, dttm: datetime, db_extra: dict[str, Any] | None = None
-    ) -> str | None:
-        sqla_type = cls.get_sqla_column_type(target_type)
-
-        if isinstance(sqla_type, Date):
-            return f"TO_DATE('{dttm.date().isoformat()}', 'YYYY-MM-DD')"
-        if isinstance(sqla_type, DateTime):
-            dttm_formatted = dttm.isoformat(sep=" ", timespec="microseconds")
-            return f"""TO_TIMESTAMP('{dttm_formatted}', 'YYYY-MM-DD HH24:MI:SS.US')"""
-        return None
-
     @staticmethod
     def get_extra_params(database: Database) -> dict[str, Any]:
         """

superset/db_engine_specs/redshift.py

@@ -14,10 +14,12 @@
 # KIND, either express or implied.  See the License for the
 # specific language governing permissions and limitations
 # under the License.
+from __future__ import annotations
+
 import logging
 import re
 from re import Pattern
-from typing import Any, Optional
+from typing import Any
 
 import pandas as pd
 from flask_babel import gettext as __
@@ -148,7 +150,7 @@ def _mutate_label(label: str) -> str:
         return label.lower()
 
     @classmethod
-    def get_cancel_query_id(cls, cursor: Any, query: Query) -> Optional[str]:
+    def get_cancel_query_id(cls, cursor: Any, query: Query) -> str | None:
         """
         Get Redshift PID that will be used to cancel all other running
         queries in the same session.

tests/unit_tests/db_engine_specs/test_redshift.py

@@ -0,0 +1,47 @@
+# 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.
+
+from datetime import datetime
+from typing import Optional
+
+import pytest
+
+from tests.unit_tests.db_engine_specs.utils import assert_convert_dttm
+from tests.unit_tests.fixtures.common import dttm
+
+
+@pytest.mark.parametrize(
+    "target_type,expected_result",
+    [
+        ("Date", "TO_DATE('2019-01-02', 'YYYY-MM-DD')"),
+        (
+            "DateTime",
+            "TO_TIMESTAMP('2019-01-02 03:04:05.678900', 'YYYY-MM-DD HH24:MI:SS.US')",
+        ),
+        (
+            "TimeStamp",
+            "TO_TIMESTAMP('2019-01-02 03:04:05.678900', 'YYYY-MM-DD HH24:MI:SS.US')",
+        ),
+        ("UnknownType", None),
+    ],
+)
+def test_convert_dttm(
+    target_type: str, expected_result: Optional[str], dttm: datetime
+) -> None:
+    from superset.db_engine_specs.redshift import RedshiftEngineSpec as spec
+
+    assert_convert_dttm(spec, target_type, expected_result, dttm)