func (t *DoAllTest) SingleAction() {
	f := func(a int) string { return "" }
	a0 := oglemock.Return("taco")

	action := oglemock.DoAll(a0)
	AssertEq(nil, action.SetSignature(reflect.TypeOf(f)))

	rets := action.Invoke([]interface{}{17})
	ExpectThat(rets, ElementsAre("taco"))
}
func (t *DoAllTest) LastActionDoesntLikeSignature() {
	f := func(a int, b string) {}

	a0 := oglemock.Invoke(f)
	a1 := oglemock.Invoke(f)
	a2 := oglemock.Return(17)

	err := oglemock.DoAll(a0, a1, a2).SetSignature(reflect.TypeOf(f))
	ExpectThat(err, Error(HasSubstr("Action 2")))
	ExpectThat(err, Error(HasSubstr("1 vals; expected 0")))
}
func (t *DoAllTest) MultipleActions() {
	f := func(a int) string { return "" }

	var saved int
	a0 := oglemock.SaveArg(0, &saved)
	a1 := oglemock.Return("taco")

	action := oglemock.DoAll(a0, a1)
	AssertEq(nil, action.SetSignature(reflect.TypeOf(f)))

	rets := action.Invoke([]interface{}{17})
	ExpectEq(17, saved)
	ExpectThat(rets, ElementsAre("taco"))
}