Fix plugin loading

After the switch to importlib, plugins are retrieved by name,
not integer index.
For details see importlib.metadata.EntryPoints.__getitem__()

Also update the mock.patch to match: entry_points() -> EntryPoints

src/ofxstatement/plugin.py

@@ -22,7 +22,7 @@ def get_plugin(name: str, ui: UI, settings: MutableMapping) -> "Plugin":
         raise PluginNotRegistered(name)
     if len(plugins) > 1:
         raise PluginNameConflict(plugins)
-    plugin = plugins[0].load()  # type: ignore[index] # index requires a int but class expects a string
+    plugin = plugins[name].load()
     return plugin(ui, settings)
 
 

src/ofxstatement/tests/test_plugin.py

@@ -2,6 +2,13 @@
 
 import mock
 
+import sys
+
+if sys.version_info < (3, 10):
+    from importlib_metadata import EntryPoints
+else:
+    from importlib.metadata import EntryPoints
+
 from ofxstatement import plugin
 
 
@@ -13,7 +20,9 @@ def get_parser(self):
 
         ep = mock.Mock()
         ep.load.return_value = SamplePlugin
-        ep_patch = mock.patch("ofxstatement.plugin.entry_points", return_value=[ep])
+        ep_patch = mock.patch(
+            "ofxstatement.plugin.entry_points", return_value=EntryPoints([ep])
+        )
         with ep_patch:
             p = plugin.get_plugin("sample", mock.Mock("UI"), mock.Mock("Settings"))
             self.assertIsInstance(p, SamplePlugin)