public function testCancelsInFlightRequests()
{
$c = $this->getClient();
$h = new History();
$c->getEmitter()->attach($h);
$p = new Pool($c, [$c->createRequest('GET', 'http://foo.com'), $c->createRequest('GET', 'http://foo.com', ['events' => ['before' => ['fn' => function () use(&$p) {
$this->assertTrue($p->cancel());
}, 'priority' => RequestEvents::EARLY]]])]);
ob_start();
$p->wait();
$contents = ob_get_clean();
$this->assertEquals(1, count($h));
$this->assertEquals('Cancelling', $contents);
}
