def test_that_updates_tree_view_when_row_selection_changes(self):
parent_presenter = create_run_tab_presenter_mock()
view = create_mock_settings_diagnostic_tab()
presenter = SettingsDiagnosticPresenter(parent_presenter)
presenter.set_view(view)
self.assertTrue(view.set_tree.call_count == 1)
presenter.on_row_changed()
self.assertTrue(view.set_tree.call_count == 2)
def test_catches_exception_when_cant_find_file(self):
parent_presenter = create_run_tab_presenter_mock()
presenter = SettingsDiagnosticPresenter(parent_presenter)
view = mock.MagicMock()
view.get_current_row.result = 1
presenter.set_view(view)
parent_presenter.get_state_for_row = mock.MagicMock()
parent_presenter.get_state_for_row.side_effect = RuntimeError('Test Error')
presenter.on_row_changed()
parent_presenter.display_warning_box.assert_called_once_with('Warning', 'Unable to find files.', 'Test Error')
