// |reftest| async // This file was procedurally generated from the following sources: // - src/dstr-binding/obj-ptrn-id-init-fn-name-cover.case // - src/dstr-binding/default/async-gen-func-decl.template /*--- description: SingleNameBinding assigns `name` to "anonymous" functions "through" cover grammar (async generator function declaration) esid: sec-asyncgenerator-definitions-instantiatefunctionobject features: [async-iteration] flags: [generated, async] info: | AsyncGeneratorDeclaration : async [no LineTerminator here] function * BindingIdentifier ( FormalParameters ) { AsyncGeneratorBody } [...] 3. Let F be ! AsyncGeneratorFunctionCreate(Normal, FormalParameters, AsyncGeneratorBody, scope, strict). [...] 13.3.3.7 Runtime Semantics: KeyedBindingInitialization SingleNameBinding : BindingIdentifier Initializeropt [...] 6. If Initializer is present and v is undefined, then [...] d. If IsAnonymousFunctionDefinition(Initializer) is true, then i. Let hasNameProperty be HasOwnProperty(v, "name"). ii. ReturnIfAbrupt(hasNameProperty). iii. If hasNameProperty is false, perform SetFunctionName(v, bindingId). ---*/ var callCount = 0; async function* f({ cover = (function () {}), xCover = (0, function() {}) }) { assert.sameValue(cover.name, 'cover'); assert.notSameValue(xCover.name, 'xCover'); callCount = callCount + 1; }; f({}).next().then(() => { assert.sameValue(callCount, 1, 'invoked exactly once'); }).then($DONE, $DONE);