GuzzleHttp\Test\Handler\MockHandlerTest::testInvokesOnStatsFunctionForResponse PHP Метод

    public function testInvokesOnStatsFunctionForResponse()
    {
        $res = new Response();
        $mock = new MockHandler([$res]);
        $request = new Request('GET', 'http://example.com');
        $stats = null;
        $onStats = function (TransferStats $s) use(&$stats) {
            $stats = $s;
        };
        $p = $mock($request, ['on_stats' => $onStats]);
        $p->wait();
        $this->assertSame($res, $stats->getResponse());
        $this->assertSame($request, $stats->getRequest());
    }