         defaultCellUpdateTest(PopoverSelectorRow<String>())
         defaultCellUpdateTest(PostalAddressRow())
         defaultCellUpdateTest(SliderRow())
+        defaultCellUpdateTest(StepperRow())
     }
     
     func testDefaultInitializers() {

        defaultInitializerTest(PopoverSelectorRow<String>())
        defaultInitializerTest(PostalAddressRow())
        defaultInitializerTest(SliderRow())
    }
    
    private func onChangeTest<Row, Value where Row: BaseRow, Row: RowType, Row: TypedRowType, Row.Value == Row.Cell.Value, Value == Row.Value>(row:Row, value:Value){

        onChangeTest(PopoverSelectorRow<String>(), value: "text")
        onChangeTest(PostalAddressRow(), value: PostalAddress(street: "a", state: "b", postalCode: "c", city: "d", country: "e"))
        onChangeTest(SliderRow(), value: 5.0)
        onChangeTest(StepperRow(), value: 2.5)
    }
    
    func testCellSetup() {
