ary-ptrn-rest-id-iter-val-err.js (1573B)
1 // This file was procedurally generated from the following sources: 2 // - src/dstr-binding/ary-ptrn-rest-id-iter-val-err.case 3 // - src/dstr-binding/error/async-gen-func-decl.template 4 /*--- 5 description: Error forwarding when IteratorValue returns an abrupt completion (async generator function declaration) 6 esid: sec-asyncgenerator-definitions-instantiatefunctionobject 7 features: [Symbol.iterator, async-iteration] 8 flags: [generated] 9 info: | 10 AsyncGeneratorDeclaration : async [no LineTerminator here] function * BindingIdentifier 11 ( FormalParameters ) { AsyncGeneratorBody } 12 13 [...] 14 3. Let F be ! AsyncGeneratorFunctionCreate(Normal, FormalParameters, AsyncGeneratorBody, 15 scope, strict). 16 [...] 17 18 13.3.3.6 Runtime Semantics: IteratorBindingInitialization 19 BindingRestElement : ... BindingIdentifier 20 1. Let lhs be ResolveBinding(StringValue of BindingIdentifier, 21 environment). 22 2. ReturnIfAbrupt(lhs). 3. Let A be ArrayCreate(0). 4. Let n=0. 5. Repeat, 23 [...] 24 c. Let nextValue be IteratorValue(next). 25 d. If nextValue is an abrupt completion, set iteratorRecord.[[done]] to 26 true. 27 e. ReturnIfAbrupt(nextValue). 28 29 ---*/ 30 var poisonedValue = Object.defineProperty({}, 'value', { 31 get: function() { 32 throw new Test262Error(); 33 } 34 }); 35 var iter = {}; 36 iter[Symbol.iterator] = function() { 37 return { 38 next: function() { 39 return poisonedValue; 40 } 41 }; 42 }; 43 44 45 async function* f([...x]) { 46 47 }; 48 49 assert.throws(Test262Error, function() { 50 f(iter); 51 }); 52 53 reportCompare(0, 0);