async-func-dstr-var-obj-ptrn-rest-skip-non-enumerable.js (1992B)
1 // |reftest| async 2 // This file was procedurally generated from the following sources: 3 // - src/dstr-binding-for-await/obj-ptrn-rest-skip-non-enumerable.case 4 // - src/dstr-binding-for-await/default/for-await-of-async-func-var.template 5 /*--- 6 description: Rest object doesn't contain non-enumerable properties (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 ( var ForBinding of AssignmentExpression ) Statement 14 15 [...] 16 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult, 17 varBinding, 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 1. Assert: lhs is a ForBinding. 33 2. Let status be the result of performing BindingInitialization 34 for lhs passing nextValue and undefined as the arguments. 35 [...] 36 ---*/ 37 var o = {a: 3, b: 4}; 38 Object.defineProperty(o, "x", { value: 4, enumerable: false }); 39 40 var iterCount = 0; 41 42 async function fn() { 43 for await (var {...rest} of [o]) { 44 assert.sameValue(rest.a, 3); 45 assert.sameValue(rest.b, 4); 46 assert.sameValue(rest.x, undefined); 47 48 verifyProperty(rest, "a", { 49 enumerable: true, 50 writable: true, 51 configurable: true, 52 value: 3 53 }); 54 55 verifyProperty(rest, "b", { 56 enumerable: true, 57 writable: true, 58 configurable: true, 59 value: 4 60 }); 61 62 iterCount += 1; 63 } 64 } 65 66 fn() 67 .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE) 68 .then($DONE, $DONE);