React\Promise\LazyPromiseTest::shouldReturnPromiseFromFactory PHP Метод

    public function shouldReturnPromiseFromFactory()
    {
        $factory = $this->createCallableMock();
        $factory->expects($this->once())->method('__invoke')->will($this->returnValue(new FulfilledPromise(1)));
        $onFulfilled = $this->createCallableMock();
        $onFulfilled->expects($this->once())->method('__invoke')->with($this->identicalTo(1));
        $p = new LazyPromise($factory);
        $p->then($onFulfilled);
    }