async-func-dstr-const-ary-ptrn-elem-id-iter-step-err.js (2168B)
1 // |reftest| async 2 // This file was procedurally generated from the following sources: 3 // - src/dstr-binding-for-await/ary-ptrn-elem-id-iter-step-err.case 4 // - src/dstr-binding-for-await/error/for-await-of-async-func-const.template 5 /*--- 6 description: Error forwarding when IteratorStep returns an abrupt completion (for-await-of statement) 7 esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation 8 features: [Symbol.iterator, destructuring-binding, async-iteration] 9 flags: [generated, async] 10 info: | 11 IterationStatement : 12 for await ( ForDeclaration of AssignmentExpression ) Statement 13 14 [...] 15 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult, 16 lexicalBinding, labelSet, async). 17 18 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation 19 20 [...] 21 4. Let destructuring be IsDestructuring of lhs. 22 [...] 23 6. Repeat 24 [...] 25 j. If destructuring is false, then 26 [...] 27 k. Else 28 i. If lhsKind is assignment, then 29 [...] 30 ii. Else if lhsKind is varBinding, then 31 [...] 32 iii. Else, 33 1. Assert: lhsKind is lexicalBinding. 34 2. Assert: lhs is a ForDeclaration. 35 3. Let status be the result of performing BindingInitialization 36 for lhs passing nextValue and iterationEnv as arguments. 37 [...] 38 39 13.3.3.6 Runtime Semantics: IteratorBindingInitialization 40 41 SingleNameBinding : BindingIdentifier Initializer_opt 42 43 [...] 44 3. If iteratorRecord.[[done]] is false, then 45 a. Let next be IteratorStep(iteratorRecord.[[iterator]]). 46 b. If next is an abrupt completion, set iteratorRecord.[[done]] to true. 47 c. ReturnIfAbrupt(next). 48 49 ---*/ 50 var g = {}; 51 g[Symbol.iterator] = function() { 52 return { 53 next() { 54 throw new Test262Error(); 55 } 56 }; 57 }; 58 59 async function fn() { 60 for await (const [x] of [g]) { 61 return; 62 } 63 } 64 65 fn() 66 .then(_ => { 67 throw new Test262Error("Expected async function to reject, but resolved."); 68 }, ({ constructor }) => { 69 assert.sameValue(constructor, Test262Error); 70 71 }) 72 .then($DONE, $DONE);