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comparison: js/src/tests/ecma_6/Generators/delegating-yield-8.js
js/src/tests/ecma_6/Generators/delegating-yield-8.js
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| -1:000000000000 | 0:405f02d72be4 |
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| 1 // Test that yield* can appear in a loop, and alongside yield. | |
| 2 | |
| 3 function* countdown(n) { | |
| 4 while (n > 0) { | |
| 5 yield n; | |
| 6 yield* countdown(--n); | |
| 7 } | |
| 8 return 34; | |
| 9 } | |
| 10 | |
| 11 function collect_results(iter) { | |
| 12 var ret = []; | |
| 13 var result; | |
| 14 do { | |
| 15 result = iter.next(); | |
| 16 ret.push(result); | |
| 17 } while (!result.done); | |
| 18 return ret; | |
| 19 } | |
| 20 | |
| 21 var expected = [ | |
| 22 // yield in countdown(3), n == 3 | |
| 23 {value: 3, done: false}, | |
| 24 // yield in yield* countdown(2), n == 2 | |
| 25 {value: 2, done: false}, | |
| 26 // yield in nested yield* countdown(1), n == 1 | |
| 27 {value: 1, done: false}, | |
| 28 // countdown(0) yields no values | |
| 29 // second go-through of countdown(2) loop, n == 1 | |
| 30 {value: 1, done: false}, | |
| 31 // second go-through of countdown(3) loop, n == 2 | |
| 32 {value: 2, done: false}, | |
| 33 // yield in yield* countdown(1), n == 1 | |
| 34 {value: 1, done: false}, | |
| 35 // third go-through of countdown(3) loop, n == 1 | |
| 36 {value: 1, done: false}, | |
| 37 // done | |
| 38 {value: 34, done: true} | |
| 39 ]; | |
| 40 | |
| 41 assertDeepEq(expected, collect_results(countdown(3))); | |
| 42 | |
| 43 if (typeof reportCompare == "function") | |
| 44 reportCompare(true, true); |
