async-func-dstr-let-obj-ptrn-rest-getter.js (1882B)
1 // |reftest| async 2 // This file was procedurally generated from the following sources: 3 // - src/dstr-binding-for-await/obj-ptrn-rest-getter.case 4 // - src/dstr-binding-for-await/default/for-await-of-async-func-let.template 5 /*--- 6 description: Getter is called when obj is being deconstructed to a rest Object (for-await-of statement) 7 esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation 8 features: [object-rest, destructuring-binding, async-iteration] 9 flags: [generated, async] 10 includes: [propertyHelper.js] 11 info: | 12 IterationStatement : 13 for await ( ForDeclaration of AssignmentExpression ) Statement 14 15 [...] 16 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult, 17 lexicalBinding, labelSet, async). 18 19 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation 20 21 [...] 22 4. Let destructuring be IsDestructuring of lhs. 23 [...] 24 6. Repeat 25 [...] 26 j. If destructuring is false, then 27 [...] 28 k. Else 29 i. If lhsKind is assignment, then 30 [...] 31 ii. Else if lhsKind is varBinding, then 32 [...] 33 iii. Else, 34 1. Assert: lhsKind is lexicalBinding. 35 2. Assert: lhs is a ForDeclaration. 36 3. Let status be the result of performing BindingInitialization 37 for lhs passing nextValue and iterationEnv as arguments. 38 [...] 39 ---*/ 40 var count = 0; 41 42 var iterCount = 0; 43 44 async function fn() { 45 for await (let {...x} of [{ get v() { count++; return 2; } }]) { 46 assert.sameValue(x.v, 2); 47 assert.sameValue(count, 1); 48 49 verifyProperty(x, "v", { 50 enumerable: true, 51 writable: true, 52 configurable: true, 53 value: 2 54 }); 55 56 iterCount += 1; 57 } 58 } 59 60 fn() 61 .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE) 62 .then($DONE, $DONE);