src/dstr-binding/default/async-gen-func-decl-dflt.template

// Copyright (C) 2017 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.

/*---
path: language/statements/async-generator/dstr/dflt-
name: async generator function declaration (default parameter)
esid: sec-asyncgenerator-definitions-instantiatefunctionobject
features: [async-iteration]
info: |
    AsyncGeneratorDeclaration : async [no LineTerminator here] function * BindingIdentifier
        ( FormalParameters ) { AsyncGeneratorBody }

        [...]
        3. Let F be ! AsyncGeneratorFunctionCreate(Normal, FormalParameters, AsyncGeneratorBody,
            scope, strict).
        [...]
flags: [async]
---*/

var callCount = 0;
async function* f(/*{ elems }*/ = /*{ vals }*/) {
  /*{ body }*/
  callCount = callCount + 1;
};
f().next().then(() => {
    assert.sameValue(callCount, 1, 'invoked exactly once');
}).then($DONE, $DONE);