alias-to-async-iterator-returns-passes-arguments.js

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// |jit-test| skip-if: !getBuildConfiguration("explicit-resource-management"); --enable-explicit-resource-management

async function* generator() {}

const AsyncIteratorPrototype = Object.getPrototypeOf(

  Object.getPrototypeOf(generator.prototype)

);

const asyncDispose = AsyncIteratorPrototype[Symbol.asyncDispose];

let len = null;

let arg0 = null;

asyncDispose.call({

  return() {

    len = arguments.length;

    arg0 = arguments[0];

    return;

},

});

drainJobQueue();

// The spec mentions that calls to the return method should pass one\

// undefined argument.

//

// Explicit Resource Management Proposal

// 27.1.3.1 %AsyncIteratorPrototype% [ @@asyncDispose ] ( )

// https://arai-a.github.io/ecma262-compare/?pr=3000&id=sec-%25asynciteratorprototype%25-%40%40asyncdispose

// Step 6.a. Perform ! Call(promiseCapability.[[Resolve]], undefined, « undefined »).

assertEq(len, 1);

assertEq(arg0, undefined);