Fix Out of Bounds error during testing. (#447)

* Add pause after clicking onto project screen.

* Fixed case where assert was accidently an assignment.

tests/tests_tui/test_tui_create_folders.py

@@ -389,9 +389,9 @@ async def test_name_template_next_sub_or_ses_and_validation(
                 pilot, "#create_folders_create_folders_button"
             )
 
-            pilot.app.screen.query_one(
+            assert pilot.app.screen.query_one(
                 "#messagebox_message_label"
-            ).renderable = (
+            ).renderable == (
                 "The name: sub-0001 does not match the template: sub-\\d\\d\\d"
             )
             await self.close_messagebox(pilot)

tests/tests_tui/tui_base.py

@@ -182,6 +182,7 @@ async def check_and_click_onto_existing_project(self, pilot, project_name):
         Perform general TUI checks during the navigation.
         """
         await pilot.click("#mainwindow_existing_project_button")
+        await pilot.pause()
 
         assert isinstance(pilot.app.screen, ProjectSelectorScreen)
         assert len(pilot.app.screen.project_names) == 1