func TestData(dom s5.NarrowDom, needInit bool) {
d := dom.Data("foo")
if d != "" {
panic("before any code has run, no data expected")
}
dom.SetData("foo", "bar")
d = dom.Data("foo")
if d != "bar" {
panic("expected bar after set")
}
dom.RemoveData("foo")
d = dom.Data("foo")
if d != "" {
panic("after remove, no data expected")
}
}
