async-func-dstr-const-obj-ptrn-prop-id-init-throws.js (2018B)
1 // |reftest| async 2 // This file was procedurally generated from the following sources: 3 // - src/dstr-binding-for-await/obj-ptrn-prop-id-init-throws.case 4 // - src/dstr-binding-for-await/error/for-await-of-async-func-const.template 5 /*--- 6 description: Error thrown when evaluating the initializer (for-await-of statement) 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 ( 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 13.3.3.7 Runtime Semantics: KeyedBindingInitialization 40 41 BindingElement : BindingPattern Initializer_opt 42 43 [...] 44 4. If Initializer is present and v is undefined, then 45 a. Let defaultValue be the result of evaluating Initializer. 46 b. Set v to ? GetValue(defaultValue). 47 ---*/ 48 function thrower() { 49 throw new Test262Error(); 50 } 51 52 async function fn() { 53 for await (const { x: y = thrower() } of [{}]) { 54 return; 55 } 56 } 57 58 fn() 59 .then(_ => { 60 throw new Test262Error("Expected async function to reject, but resolved."); 61 }, ({ constructor }) => { 62 assert.sameValue(constructor, Test262Error); 63 64 }) 65 .then($DONE, $DONE);