x int
}

func (m myStruct) Generate(r *rand.Rand, _ int) reflect.Value {
	return reflect.ValueOf(myStruct{x: 42})
}

func myStructProperty(in myStruct) bool { return in.x == 42 }

func TestCheckProperty(t *testing.T) {
	reportError("myStructProperty", Check(myStructProperty, nil), t)
}

func TestFailure(t *testing.T) {
	f := func(x int) bool { return false }
	err := Check(f, nil)
	if err == nil {