JSTests/test262/test/language/expressions/object/dstr/async-gen-meth-ary-ptrn-elision-exhausted.js

// This file was procedurally generated from the following sources:
// - src/dstr-binding/ary-ptrn-elision-exhausted.case
// - src/dstr-binding/default/async-gen-meth.template
/*---
description: Elision accepts exhausted iterator (async generator method)
esid: sec-asyncgenerator-definitions-propertydefinitionevaluation
features: [generators, async-iteration]
flags: [generated, async]
info: |
    AsyncGeneratorMethod :
        async [no LineTerminator here] * PropertyName ( UniqueFormalParameters )
            { AsyncGeneratorBody }

    1. Let propKey be the result of evaluating PropertyName.
    2. ReturnIfAbrupt(propKey).
    3. If the function code for this AsyncGeneratorMethod is strict mode code, let strict be true.
       Otherwise let strict be false.
    4. Let scope be the running execution context's LexicalEnvironment.
    5. Let closure be ! AsyncGeneratorFunctionCreate(Method, UniqueFormalParameters,
       AsyncGeneratorBody, scope, strict).
    [...]


    13.3.3.6 Runtime Semantics: IteratorBindingInitialization

    ArrayBindingPattern : [ Elision ]

    1. Return the result of performing
       IteratorDestructuringAssignmentEvaluation of Elision with iteratorRecord
       as the argument.

    12.14.5.3 Runtime Semantics: IteratorDestructuringAssignmentEvaluation

    Elision : ,

    1. If iteratorRecord.[[done]] is false, then
       [...]
    2. Return NormalCompletion(empty).

---*/
var iter = function*() {}();
iter.next();


var callCount = 0;
var obj = {
  async *method([,]) {
    
    callCount = callCount + 1;
  }
};

obj.method(iter).next().then(() => {
    assert.sameValue(callCount, 1, 'invoked exactly once');
}).then($DONE, $DONE);