async-gen-dstr-const-ary-init-iter-get-err.js (1900B)
1 // |reftest| async 2 // This file was procedurally generated from the following sources: 3 // - src/dstr-binding-for-await/ary-init-iter-get-err.case 4 // - src/dstr-binding-for-await/error/for-await-of-async-gen-const.template 5 /*--- 6 description: Abrupt completion returned by GetIterator (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 13.3.3.5 Runtime Semantics: BindingInitialization 40 41 BindingPattern : ArrayBindingPattern 42 43 1. Let iterator be ? GetIterator(value). 44 45 ---*/ 46 var iter = {}; 47 iter[Symbol.iterator] = function() { 48 throw new Test262Error(); 49 }; 50 51 async function * gen() { 52 for await (const [x] of [iter]) { 53 return; 54 } 55 } 56 57 gen().next() 58 .then(_ => { 59 throw new Test262Error("Expected async function to reject, but resolved."); 60 }, ({ constructor }) => { 61 assert.sameValue(constructor, Test262Error); 62 63 }) 64 .then($DONE, $DONE);