Unit tests for main window actions #482

Job	Run time
publish-on-pypi	1m 21s
build-installer-on-windows / build	5m 47s
build-on-macos / build	4m 13s
build-on-ubuntu / build	4m 4s
build-on-windows / build	7m 59s
publish-on-github	0s
	23m 24s

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