better faulty encoding detection

tests/test_gui_convenience.py

@@ -99,15 +99,29 @@ class GuiConvenienceTests(unittest.TestCase):
                 self.assertEqual(self.app.state_store.step("statement_persp")["status"], expected)
                 self.assertEqual(self.app.state_store.step("statement_groups")["status"], "ready")
 
-    def test_compact_evaluation_input_and_open_folder_button(self):
+    def test_evaluation_buttons_are_ordered_and_open_folder_and_statement(self):
         self.assertEqual(int(self.app.evaluation_entry.cget("width")), 42)
         self.assertEqual(
-            int(self.app.open_evaluation_button.grid_info()["column"]),
+            int(self.app.browse_evaluation_button.grid_info()["column"]),
             int(self.app.evaluation_entry.grid_info()["column"]) + 1,
         )
+        self.assertEqual(
+            int(self.app.open_evaluation_button.grid_info()["column"]),
+            int(self.app.browse_evaluation_button.grid_info()["column"]) + 1,
+        )
+        self.assertEqual(
+            int(self.app.open_statement_button.grid_info()["column"]),
+            int(self.app.open_evaluation_button.grid_info()["column"]) + 1,
+        )
+        statement = self.evaluation / "enonce.pdf"
+        statement.touch()
         with patch("copienator_gui.app.open_path") as opened:
             self.app.open_evaluation_button.invoke()
-        opened.assert_called_once_with(self.evaluation)
+            self.app.open_statement_button.invoke()
+        self.assertEqual(
+            opened.call_args_list,
+            [unittest.mock.call(self.evaluation), unittest.mock.call(statement)],
+        )
 
     def test_manual_resolution_panel_follows_command_target(self):
         manual = self.evaluation / "manual_resolutions.txt"