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comparison: js/src/tests/ecma_6/Generators/delegating-yield-9.js
js/src/tests/ecma_6/Generators/delegating-yield-9.js
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| -1:000000000000 | 0:11d860593ae5 |
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| 1 // Test that yield* can appear in a loop, and inside yield. | |
| 2 | |
| 3 function* countdown(n) { | |
| 4 while (n > 0) { | |
| 5 yield (yield* countdown(--n)); | |
| 6 } | |
| 7 return 34; | |
| 8 } | |
| 9 | |
| 10 function collect_results(iter) { | |
| 11 var ret = []; | |
| 12 var result; | |
| 13 do { | |
| 14 result = iter.next(); | |
| 15 ret.push(result); | |
| 16 } while (!result.done); | |
| 17 return ret; | |
| 18 } | |
| 19 | |
| 20 var expected = [ | |
| 21 // Only 34 yielded from the "yield" and the last return make it out. | |
| 22 // Three yields in countdown(3), two in countdown(2), and one in | |
| 23 // countdown(1) (called twice). | |
| 24 {value: 34, done: false}, | |
| 25 {value: 34, done: false}, | |
| 26 {value: 34, done: false}, | |
| 27 {value: 34, done: false}, | |
| 28 {value: 34, done: false}, | |
| 29 {value: 34, done: false}, | |
| 30 {value: 34, done: false}, | |
| 31 {value: 34, done: true}, // final | |
| 32 ]; | |
| 33 | |
| 34 assertDeepEq(collect_results(countdown(3)), expected); | |
| 35 | |
| 36 if (typeof reportCompare == "function") | |
| 37 reportCompare(true, true); |
