dispatchResponseEvent example

    public function testLogHandling()
    {
        $handler = $this->createHandler();
        $logger = new Logger('my_logger', [$handler]);

        $logger->warning('This does not look right.');

        $request = new Request();
        $request->headers->set('User-Agent', 'Mozilla/5.0 (FirePHP/1.0)');

        $response = $this->dispatchResponseEvent($handler, $request);

        $logger->error('Something went wrong.');

        self::assertSame(
            [
                'x-wf-1-1-1-1' => ['85|[{"Type":"WARN","File":"","Line":"","Label":"my_logger"},"This does not look right."]|'],
                'x-wf-1-1-1-2' => ['82|[{"Type":"ERROR","File":"","Line":"","Label":"my_logger"},"Something went wrong."]|'],
            ],
            array_filter(
                $response->headers->all(),
                static fn (string $key): bool => str_starts_with($key, 'x-wf-1-1-1'),