GuzzleHttp\Tests\RetryMiddlewareTest::testCanRetryExceptions PHP Method

    public function testCanRetryExceptions()
    {
        $calls = [];
        $decider = function ($retries, $request, $response, $error) use(&$calls) {
            $calls[] = func_get_args();
            return $error instanceof \Exception;
        };
        $m = Middleware::retry($decider);
        $h = new MockHandler([new \Exception(), new Response(201)]);
        $c = new Client(['handler' => $m($h)]);
        $p = $c->sendAsync(new Request('GET', 'http://test.com'), []);
        $this->assertEquals(201, $p->wait()->getStatusCode());
        $this->assertCount(2, $calls);
        $this->assertEquals(0, $calls[0][0]);
        $this->assertNull($calls[0][2]);
        $this->assertInstanceOf('Exception', $calls[0][3]);
        $this->assertEquals(1, $calls[1][0]);
        $this->assertInstanceOf(Response::class, $calls[1][2]);
        $this->assertNull($calls[1][3]);
    }