func newDefined(underlying Type) *Named {
	tname := NewTypeName(nopos, nil, "T", nil)
	return NewNamed(tname, underlying, nil)
}

func TestConvertibleTo(t *testing.T) {
	for _, test := range []struct {
		v, t Type
		want bool
	}{
		{Typ[Int], Typ[Int], true},
		{Typ[Int], Typ[Float32], true},
		{Typ[Int], Typ[String], true},

// Helper function for use with TestIncompleteInterfaces only.
func newDefined(underlying Type) *Named {
	tname := NewTypeName(nopos, nil, "T", nil)
	return NewNamed(tname, underlying, nil)
}

func TestConvertibleTo(t *testing.T) {
	for _, test := range []struct {
		v, t Type
		want bool
	}{
		{Typ[Int], Typ[Int], true},
		{Typ[Int], Typ[Float32], true},
		{Typ[Int], Typ[String], true},

	for it.Next() {
		line := fmt.Sprintf("%v: %v", it.Key(), it.Value())
		got = append(got, line)
	}
	slices.Sort(got)
	return "[" + strings.Join(got, ", ") + "]"
}

func TestConvertibleTo(t *testing.T) {
	t1 := ValueOf(example1.MyStruct{}).Type()
	t2 := ValueOf(example2.MyStruct{}).Type()

	// Shouldn't raise stack overflow
	if t1.ConvertibleTo(t2) {