mpyw\Co\Co::all PHP Method

    public static function all($value)
    {
        (yield Co::RETURN_WITH => (yield $value));
        // @codeCoverageIgnoreStart
    }

 public function testAll()
 {
     $a = new DummyCurl('A', 3);
     $b = new DummyCurl('B', 2);
     $r = Co::wait(Co::all([$a, $b]));
     $this->assertEquals('Response[A]', $r[0]);
     $this->assertEquals('Response[B]', $r[1]);
 }