Test about window

Mocks view and thus does not require a GUI framework for tests.

Related pwr-Solaar#2395

tests/solaar/ui/test_about_window.py

@@ -0,0 +1,19 @@
+from unittest import mock
+
+from solaar.ui.about.model import AboutModel
+from solaar.ui.about.presenter import Presenter
+
+
+def test_about_dialog():
+    model = AboutModel()
+    view = mock.Mock()
+    presenter = Presenter(model, view)
+
+    presenter.run()
+
+    assert view.init_ui.called_once
+    assert view.update_comments.called_once
+    assert view.update_authors.called_once
+    assert view.update_translator_credits.called_once
+    assert view.update_website.called_once
+    assert view.mainloop.called_once