named-dflt-obj-ptrn-id-init-fn-name-cover.js (1623B)
1 // |reftest| async 2 // This file was procedurally generated from the following sources: 3 // - src/dstr-binding/obj-ptrn-id-init-fn-name-cover.case 4 // - src/dstr-binding/default/async-gen-func-named-expr-dflt.template 5 /*--- 6 description: SingleNameBinding assigns `name` to "anonymous" functions "through" cover grammar (async generator named function expression (default parameter)) 7 esid: sec-asyncgenerator-definitions-evaluation 8 features: [async-iteration] 9 flags: [generated, async] 10 info: | 11 AsyncGeneratorExpression : async [no LineTerminator here] function * BindingIdentifier 12 ( FormalParameters ) { AsyncGeneratorBody } 13 14 [...] 15 7. Let closure be ! AsyncGeneratorFunctionCreate(Normal, FormalParameters, 16 AsyncGeneratorBody, funcEnv, strict). 17 [...] 18 19 20 13.3.3.7 Runtime Semantics: KeyedBindingInitialization 21 22 SingleNameBinding : BindingIdentifier Initializeropt 23 24 [...] 25 6. If Initializer is present and v is undefined, then 26 [...] 27 d. If IsAnonymousFunctionDefinition(Initializer) is true, then 28 i. Let hasNameProperty be HasOwnProperty(v, "name"). 29 ii. ReturnIfAbrupt(hasNameProperty). 30 iii. If hasNameProperty is false, perform SetFunctionName(v, 31 bindingId). 32 ---*/ 33 34 35 var callCount = 0; 36 var f; 37 f = async function* h({ cover = (function () {}), xCover = (0, function() {}) } = {}) { 38 assert.sameValue(cover.name, 'cover'); 39 assert.notSameValue(xCover.name, 'xCover'); 40 callCount = callCount + 1; 41 }; 42 43 f().next().then(() => { 44 assert.sameValue(callCount, 1, 'invoked exactly once'); 45 }).then($DONE, $DONE);