async-gen-decl-dstr-array-elem-put-prop-ref-user-err.js (1617B)
1 // |reftest| async 2 // This file was procedurally generated from the following sources: 3 // - src/dstr-assignment-for-await/array-elem-put-prop-ref-user-err.case 4 // - src/dstr-assignment-for-await/default/async-gen-decl.template 5 /*--- 6 description: Any error raised as a result of setting the value should be forwarded to the runtime. (for-await-of statement in an async generator declaration) 7 esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation 8 features: [destructuring-binding, async-iteration] 9 flags: [generated, async] 10 info: | 11 IterationStatement : 12 for await ( LeftHandSideExpression of AssignmentExpression ) Statement 13 14 1. Let keyResult be the result of performing ? ForIn/OfHeadEvaluation(« », 15 AssignmentExpression, iterate). 16 2. Return ? ForIn/OfBodyEvaluation(LeftHandSideExpression, Statement, 17 keyResult, assignment, labelSet). 18 19 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation 20 21 [...] 22 5. If destructuring is true and if lhsKind is assignment, then 23 a. Assert: lhs is a LeftHandSideExpression. 24 b. Let assignmentPattern be the parse of the source text corresponding to 25 lhs using AssignmentPattern as the goal symbol. 26 [...] 27 ---*/ 28 let x = { 29 set y(val) { 30 throw new Test262Error(); 31 } 32 }; 33 34 let iterCount = 0; 35 async function * fn() { 36 for await ([x.y] of [[23] 37 ]) { 38 39 iterCount += 1; 40 } 41 } 42 43 let promise = fn().next(); 44 45 promise.then(() => $DONE('Promise incorrectly fulfilled.'), ({ constructor }) => { 46 assert.sameValue(iterCount, 0); 47 assert.sameValue(constructor, Test262Error); 48 }).then($DONE, $DONE);