Unit tests for main window actions #496

Job	Run time
publish-on-pypi	1m 22s
build-installer-on-windows / build	5m 15s
build-on-macos / build	7m 9s
build-on-ubuntu / build	3m 51s
build-on-windows / build	5m 26s
publish-on-github	0s
	23m 3s

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