public void setting_the_text_property_raises_the_change_event_if_is_has_changed()
{
var column = new GridColumnModel(GridColumn.DriverName);
var observer = column.CreateObserver();
column.Text = "Andy";
Assert.True(observer.HasChanged(x => x.Text));
column.Text = "Andy";
Assert.True(observer.HasChanged(x => x.Text));
column.Text = null;
Assert.Equal(2, observer.GetChangeCount(x => x.Text));
}