test: add coverage for __eq__ returning NotImplemented (#17)

Add tests verifying that Table.__eq__ and Transaction.__eq__ return
NotImplemented when compared against incompatible types.

Author: tbhb

tests/unit/test_table.py

@@ -1509,6 +1509,15 @@ def test_eq_with_non_table_returns_false(
 
         assert result is False
 
+    def test_eq_returns_not_implemented_for_non_table(
+        self, make_table: "Callable[..., Table]"
+    ) -> None:
+        table = make_table()
+
+        result = table.__eq__("string")
+
+        assert result is NotImplemented
+
     def test_equal_relative_vs_absolute_path(
         self, tmp_path: "Path", monkeypatch: "pytest.MonkeyPatch"
     ) -> None:

tests/unit/test_transaction.py

@@ -1393,6 +1393,18 @@ def test_eq_with_non_transaction_returns_false(
         finally:
             tx.abort()
 
+    def test_eq_returns_not_implemented_for_non_transaction(
+        self, make_table: "Callable[..., Table]"
+    ) -> None:
+        table = make_table()
+
+        tx = table.transaction()
+        try:
+            result = tx.__eq__("string")
+            assert result is NotImplemented
+        finally:
+            tx.abort()
+
     def test_finalized_vs_active_not_equal(self, tmp_path: "Path") -> None:
         path1 = tmp_path / "test1.jsonlt"
         path2 = tmp_path / "test2.jsonlt"