test: sqlite db engine spec

tests/db_engine_specs/sqlite_tests.py

@@ -14,6 +14,8 @@
 # KIND, either express or implied.  See the License for the
 # specific language governing permissions and limitations
 # under the License.
+from unittest import mock
+
 from superset.db_engine_specs.sqlite import SqliteEngineSpec
 from tests.db_engine_specs.base_tests import TestDbEngineSpec
 
@@ -25,3 +27,52 @@ def test_convert_dttm(self):
         self.assertEqual(
             SqliteEngineSpec.convert_dttm("TEXT", dttm), "'2019-01-02 03:04:05.678900'"
         )
+
+    def test_convert_dttm_lower(self):
+        dttm = self.get_dttm()
+
+        self.assertEqual(
+            SqliteEngineSpec.convert_dttm("text", dttm), "'2019-01-02 03:04:05.678900'"
+        )
+
+    def test_convert_dttm_invalid_type(self):
+        dttm = self.get_dttm()
+
+        self.assertEqual(SqliteEngineSpec.convert_dttm("other", dttm), None)
+
+    def test_get_all_datasource_names_table(self):
+        database = mock.MagicMock()
+        database.get_all_schema_names.return_value = ["schema1"]
+        table_names = ["table1", "table2"]
+        get_tables = mock.MagicMock(return_value=table_names)
+        database.get_all_table_names_in_schema = get_tables
+        result = SqliteEngineSpec.get_all_datasource_names(database, "table")
+        assert result == table_names
+        get_tables.assert_called_once_with(
+            schema="schema1",
+            force=True,
+            cache=database.table_cache_enabled,
+            cache_timeout=database.table_cache_timeout,
+        )
+
+    def test_get_all_datasource_names_view(self):
+        database = mock.MagicMock()
+        database.get_all_schema_names.return_value = ["schema1"]
+        views_names = ["view1", "view2"]
+        get_views = mock.MagicMock(return_value=views_names)
+        database.get_all_view_names_in_schema = get_views
+        result = SqliteEngineSpec.get_all_datasource_names(database, "view")
+        assert result == views_names
+        get_views.assert_called_once_with(
+            schema="schema1",
+            force=True,
+            cache=database.table_cache_enabled,
+            cache_timeout=database.table_cache_timeout,
+        )
+
+    def test_get_all_datasource_names_invalid_type(self):
+        database = mock.MagicMock()
+        database.get_all_schema_names.return_value = ["schema1"]
+        invalid_type = "asdf"
+        with self.assertRaises(Exception):
+            SqliteEngineSpec.get_all_datasource_names(database, invalid_type)