GuzzleHttp\Tests\RedirectMiddlewareTest::testInvokesOnRedirectForRedirects PHP Method

    public function testInvokesOnRedirectForRedirects()
    {
        $mock = new MockHandler([new Response(302, ['Location' => 'http://test.com']), new Response(200)]);
        $stack = new HandlerStack($mock);
        $stack->push(Middleware::redirect());
        $handler = $stack->resolve();
        $request = new Request('GET', 'http://example.com?a=b');
        $call = false;
        $promise = $handler($request, ['allow_redirects' => ['max' => 2, 'on_redirect' => function ($request, $response, $uri) use(&$call) {
            $this->assertEquals(302, $response->getStatusCode());
            $this->assertEquals('GET', $request->getMethod());
            $this->assertEquals('http://test.com', (string) $uri);
            $call = true;
        }]]);
        $promise->wait();
        $this->assertTrue($call);
    }