// |reftest| async // This file was procedurally generated from the following sources: // - src/dstr-binding/obj-ptrn-empty.case // - src/dstr-binding/default/async-gen-func-decl-dflt.template /*--- description: No property access occurs for an "empty" object binding pattern (async generator function declaration (default parameter)) 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). [...] Runtime Semantics: BindingInitialization ObjectBindingPattern : { } 1. Return NormalCompletion(empty). ---*/ var accessCount = 0; var obj = Object.defineProperty({}, 'attr', { get: function() { accessCount += 1; } }); var callCount = 0; async function* f({} = obj) { assert.sameValue(accessCount, 0); callCount = callCount + 1; }; f().next().then(() => { assert.sameValue(callCount, 1, 'invoked exactly once'); }).then($DONE, $DONE);