Create test cases

Test cases for UI are possible simulating user input. https://github.com/wxWidgets/wxWidgets/blob/master/docs/contributing/how-to-write-unit-tests.md

Need to add.

Start by reading the linked wxWidgets guide on writing unit tests and inspect the gwallet UI entry points to identify where simulated user input can be exercised. The issue does not name files, existing tests, or specific UI behavior, so the expected test coverage and definition of done remain unspecified.

Written by the indexing model from the issue text.