| // 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); |