iter := ValueOf(m).MapRange()
	if got, want := iterateToString(iter), `[one: 1, three: 3, two: 2]`; got != want {
		t.Errorf("iterator returned %s (after sorting), want %s", got, want)
	}
}

func TestMapIterNilMap(t *testing.T) {
	var m map[string]int
	iter := ValueOf(m).MapRange()
	if got, want := iterateToString(iter), `[]`; got != want {