1--TEST--
2Valid generator return types
3--FILE--
4<?php
5function test1() : Generator {
6    yield 1;
7}
8
9function test2() : Iterator {
10    yield 2;
11}
12
13function test3() : Traversable {
14    yield 3;
15}
16
17var_dump(
18    test1(),
19    test2(),
20    test3()
21);
22--EXPECTF--
23object(Generator)#%d (%d) {
24}
25object(Generator)#%d (%d) {
26}
27object(Generator)#%d (%d) {
28}
29