func checkSameType(t *testing.T, x Type, y any) {
	if x != TypeOf(y) || TypeOf(Zero(x).Interface()) != TypeOf(y) {
		t.Errorf("did not find preexisting type for %s (vs %s)", TypeOf(x), TypeOf(y))
	}
}

func TestArrayOf(t *testing.T) {
	// check construction and use of type not in binary
	tests := []struct {
		n          int
		value      func(i int) any
		comparable bool
		want       string
	}{
		{