feat: add support for Wutta <-> Wutta import/export

tests/test_app.py

@@ -46,6 +46,18 @@ class TestWuttaSyncAppProvider(ConfigTestCase):
         self.assertIn(FromCsvToWutta, handlers)
         self.assertIn(FromFooToBar, handlers)
 
+        # now for something completely different..here we pretend there
+        # are multiple handler entry points with same key.  all should
+        # be returned, including both which share the key.
+        entry_points = {
+            "import.to_baz.from_foo": [FromFooToBaz1, FromFooToBaz2],
+        }
+        with patch.object(mod, "load_entry_points", return_value=entry_points):
+            handlers = self.app.get_all_import_handlers()
+            self.assertEqual(len(handlers), 2)
+            self.assertIn(FromFooToBaz1, handlers)
+            self.assertIn(FromFooToBaz2, handlers)
+
     def test_get_designated_import_handler_spec(self):
 
         # fetch of unknown key returns none
@@ -139,6 +151,14 @@ class TestWuttaSyncAppProvider(ConfigTestCase):
         handler = self.app.get_import_handler("import.to_wutta.from_csv")
         self.assertIsInstance(handler, FromCsvToWutta)
         self.assertIsInstance(handler, FromCsvToPoser)
+        self.assertFalse(hasattr(handler, "foo_attr"))
+
+        # can pass extra kwargs
+        handler = self.app.get_import_handler(
+            "import.to_wutta.from_csv", foo_attr="whatever"
+        )
+        self.assertTrue(hasattr(handler, "foo_attr"))
+        self.assertEqual(handler.foo_attr, "whatever")
 
         # unknown importer cannot be found
         handler = self.app.get_import_handler("bogus")