| // Copyright (C) 2018 Valerie Young. All rights reserved. |
| // This code is governed by the BSD license found in the LICENSE file. |
| |
| /*--- |
| esid: sec-asyncgenerator-prototype-next |
| description: queue |
| info: > |
| AsyncGenerator.prototype.next ( value ) |
| 1. Let generator be the this value. |
| 2. Let completion be NormalCompletion(value). |
| 3. Return ! AsyncGeneratorEnqueue(generator, completion). |
| |
| AsyncGeneratorEnqueue ( generator, completion ) |
| ... |
| 4. Let queue be generator.[[AsyncGeneratorQueue]]. |
| 5. Let request be AsyncGeneratorRequest{[[Completion]]: completion, |
| [[Capability]]: promiseCapability}. |
| 6. Append request to the end of queue. |
| ... |
| |
| AsyncGeneratorResolve ( generator, value, done ) |
| ... |
| 2. Let queue be generator.[[AsyncGeneratorQueue]]. |
| 3. Assert: queue is not an empty List. |
| 4. Remove the first element from queue and let next be the value of that element. |
| ... |
| |
| flags: [async] |
| features: [async-iteration] |
| ---*/ |
| |
| var order = 0; |
| |
| async function* g() { |
| yield 'first'; |
| yield 'second'; |
| } |
| |
| var iter = g(); |
| |
| var item1 = iter.next(); |
| var item2 = iter.next(); |
| var item3 = iter.next(); |
| |
| var resolvedorder = 0; |
| |
| Promise.all([ |
| |
| item3.then(function(result) { |
| resolvedorder++; |
| assert.sameValue(resolvedorder, 3); |
| assert.sameValue(result.value, undefined); |
| assert.sameValue(result.done, true); |
| }), |
| |
| item2.then(function(result) { |
| resolvedorder++; |
| assert.sameValue(resolvedorder, 2); |
| assert.sameValue(result.value, "second"); |
| assert.sameValue(result.done, false); |
| }), |
| |
| item1.then(function(result) { |
| resolvedorder++; |
| assert.sameValue(resolvedorder, 1); |
| assert.sameValue(result.value, "first"); |
| assert.sameValue(result.done, false); |
| }) |
| |
| ]).then(function() { $DONE(); }, $DONE); |
| |