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<?php
namespace GuzzleHttp\Tests\Ring\Client;

use GuzzleHttp\Ring\Client\Middleware;
use GuzzleHttp\Ring\Future\CompletedFutureArray;

class MiddlewareTest extends \PHPUnit_Framework_TestCase
{
    public function testFutureCallsDefaultHandler()
    {
        $future = new CompletedFutureArray(['status' => 200]);
        $calledA = false;
        $a = function (array $req) use (&$calledA, $future) {
            $calledA = true;
            return $future;
        };
        $calledB = false;
        $b = function (array $req) use (&$calledB) { $calledB = true; };
        $s = Middleware::wrapFuture($a, $b);
        $s([]);
        $this->assertTrue($calledA);
        $this->assertFalse($calledB);
    }

    public function testFutureCallsStreamingHandler()
    {
        $future = new CompletedFutureArray(['status' => 200]);
        $calledA = false;
        $a = function (array $req) use (&$calledA) { $calledA = true; };
        $calledB = false;
        $b = function (array $req) use (&$calledB, $future) {
            $calledB = true;
            return $future;
        };
        $s = Middleware::wrapFuture($a, $b);
        $result = $s(['client' => ['future' => true]]);
        $this->assertFalse($calledA);
        $this->assertTrue($calledB);
        $this->assertSame($future, $result);
    }

    public function testStreamingCallsDefaultHandler()
    {
        $calledA = false;
        $a = function (array $req) use (&$calledA) { $calledA = true; };
        $calledB = false;
        $b = function (array $req) use (&$calledB) { $calledB = true; };
        $s = Middleware::wrapStreaming($a, $b);
        $s([]);
        $this->assertTrue($calledA);
        $this->assertFalse($calledB);
    }

    public function testStreamingCallsStreamingHandler()
    {
        $calledA = false;
        $a = function (array $req) use (&$calledA) { $calledA = true; };
        $calledB = false;
        $b = function (array $req) use (&$calledB) { $calledB = true; };
        $s = Middleware::wrapStreaming($a, $b);
        $s(['client' => ['stream' => true]]);
        $this->assertFalse($calledA);
        $this->assertTrue($calledB);
    }
}