private IReadonlyFieldConfiguration Act(FieldDisplayType displayType, FieldParent parent)
{
var fg = Substitute.For <IFieldGenerator <TestViewModel, string> >();
var fgh = Substitute.For <IFieldGeneratorHandler <TestViewModel, string> >();
fgh.GetDisplayType(Arg.Any <IReadonlyFieldConfiguration>()).Returns(displayType);
_t.PrepareFieldConfiguration(fg, fgh, _fieldConfiguration, parent);
return(_fieldConfiguration);
}
