| // This file was procedurally generated from the following sources: |
| // - src/dstr-binding/ary-ptrn-elem-id-iter-val-err.case |
| // - src/dstr-binding/error/async-gen-func-expr-dflt.template |
| /*--- |
| description: Error forwarding when IteratorValue returns an abrupt completion (async generator function expression (default parameter)) |
| esid: sec-asyncgenerator-definitions-evaluation |
| features: [Symbol.iterator, async-iteration] |
| flags: [generated] |
| info: | |
| AsyncGeneratorExpression : async [no LineTerminator here] function * ( FormalParameters ) { |
| AsyncGeneratorBody } |
| |
| [...] |
| 3. Let closure be ! AsyncGeneratorFunctionCreate(Normal, FormalParameters, |
| AsyncGeneratorBody, scope, strict). |
| [...] |
| |
| 13.3.3.6 Runtime Semantics: IteratorBindingInitialization |
| |
| SingleNameBinding : BindingIdentifier Initializeropt |
| |
| [...] |
| 4. If iteratorRecord.[[done]] is false, then |
| a. Let next be IteratorStep(iteratorRecord.[[iterator]]). |
| b. If next is an abrupt completion, set iteratorRecord.[[done]] to true. |
| c. ReturnIfAbrupt(next). |
| d. If next is false, set iteratorRecord.[[done]] to true. |
| e. Else, |
| i. Let v be IteratorValue(next). |
| ii. If v is an abrupt completion, set iteratorRecord.[[done]] to |
| true. |
| iii. ReturnIfAbrupt(v). |
| |
| ---*/ |
| var poisonedValue = Object.defineProperty({}, 'value', { |
| get: function() { |
| throw new Test262Error(); |
| } |
| }); |
| var g = {}; |
| g[Symbol.iterator] = function() { |
| return { |
| next: function() { |
| return poisonedValue; |
| } |
| }; |
| }; |
| |
| |
| var f = async function*([x] = g) { |
| |
| }; |
| |
| assert.throws(Test262Error, function() { |
| f(); |
| }); |