Fix the aftermath of refactoring: cease instantiating abstract classes

Author: Sergey Vasilyev

tests/test_format.py

@@ -2,7 +2,7 @@
 from data_diff.diff_tables import DiffResultWrapper, InfoTree, SegmentInfo, TableSegment
 from data_diff.format import jsonify
 from data_diff.abcs.database_types import Integer
-from data_diff.databases.base import Database
+from tests.test_query import MockDatabase
 
 
 class TestFormat(unittest.TestCase):
@@ -13,8 +13,12 @@ def test_jsonify_diff(self):
             info_tree=InfoTree(
                 info=SegmentInfo(
                     tables=[
-                        TableSegment(table_path=("db", "schema", "table1"), key_columns=("id",), database=Database()),
-                        TableSegment(table_path=("db", "schema", "table2"), key_columns=("id",), database=Database()),
+                        TableSegment(
+                            table_path=("db", "schema", "table1"), key_columns=("id",), database=MockDatabase()
+                        ),
+                        TableSegment(
+                            table_path=("db", "schema", "table2"), key_columns=("id",), database=MockDatabase()
+                        ),
                     ],
                     diff_schema=(
                         ("is_exclusive_a", bool),
@@ -100,8 +104,12 @@ def test_jsonify_no_stats(self):
             info_tree=InfoTree(
                 info=SegmentInfo(
                     tables=[
-                        TableSegment(table_path=("db", "schema", "table1"), key_columns=("id",), database=Database()),
-                        TableSegment(table_path=("db", "schema", "table2"), key_columns=("id",), database=Database()),
+                        TableSegment(
+                            table_path=("db", "schema", "table1"), key_columns=("id",), database=MockDatabase()
+                        ),
+                        TableSegment(
+                            table_path=("db", "schema", "table2"), key_columns=("id",), database=MockDatabase()
+                        ),
                     ],
                     diff_schema=(
                         ("is_exclusive_a", bool),
@@ -177,8 +185,12 @@ def test_jsonify_diff_no_difeference(self):
             info_tree=InfoTree(
                 info=SegmentInfo(
                     tables=[
-                        TableSegment(table_path=("db", "schema", "table1"), key_columns=("id",), database=Database()),
-                        TableSegment(table_path=("db", "schema", "table2"), key_columns=("id",), database=Database()),
+                        TableSegment(
+                            table_path=("db", "schema", "table1"), key_columns=("id",), database=MockDatabase()
+                        ),
+                        TableSegment(
+                            table_path=("db", "schema", "table2"), key_columns=("id",), database=MockDatabase()
+                        ),
                     ],
                     diff_schema=(
                         ("is_exclusive_a", bool),
@@ -251,8 +263,12 @@ def test_jsonify_column_suffix_fix(self):
             info_tree=InfoTree(
                 info=SegmentInfo(
                     tables=[
-                        TableSegment(table_path=("db", "schema", "table1"), key_columns=("id_a",), database=Database()),
-                        TableSegment(table_path=("db", "schema", "table2"), key_columns=("id_a",), database=Database()),
+                        TableSegment(
+                            table_path=("db", "schema", "table1"), key_columns=("id_a",), database=MockDatabase()
+                        ),
+                        TableSegment(
+                            table_path=("db", "schema", "table2"), key_columns=("id_a",), database=MockDatabase()
+                        ),
                     ],
                     diff_schema=(
                         ("is_exclusive_a", bool),

tests/test_query.py

@@ -73,6 +73,8 @@ def load_mixins(self):
 
 
 class MockDatabase(Database):
+    CONNECT_URI_HELP = "mock://"
+    CONNECT_URI_PARAMS = []
     dialect = MockDialect()
 
     _query = NotImplemented