React\Promise\FunctionMapTest::shouldMapInputPromisesArray PHP Method

    public function shouldMapInputPromisesArray()
    {
        $mock = $this->createCallableMock();
        $mock->expects($this->once())->method('__invoke')->with($this->identicalTo([2, 4, 6]));
        map([resolve(1), resolve(2), resolve(3)], $this->mapper())->then($mock);
    }