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<?php
namespace GuzzleHttp\Tests\Promise;
use GuzzleHttp\Promise\Promise;
use GuzzleHttp\Promise\FulfilledPromise;
class FulfilledPromiseTest extends \PHPUnit_Framework_TestCase
{
public function testReturnsValueWhenWaitedUpon()
{
$p = new FulfilledPromise('foo');
$this->assertEquals('fulfilled', $p->getState());
$this->assertEquals('foo', $p->wait(true));
}
public function testCannotCancel()
{
$p = new FulfilledPromise('foo');
$this->assertEquals('fulfilled', $p->getState());
$p->cancel();
$this->assertEquals('foo', $p->wait());
}
public function testCannotResolve()
{
$p = new FulfilledPromise('foo');
$p->resolve('bar');
}
public function testCannotReject()
{
$p = new FulfilledPromise('foo');
$p->reject('bar');
}
public function testCanResolveWithSameValue()
{
$p = new FulfilledPromise('foo');
$p->resolve('foo');
}
public function testCannotResolveWithPromise()
{
new FulfilledPromise(new Promise());
}
public function testReturnsSelfWhenNoOnFulfilled()
{
$p = new FulfilledPromise('a');
$this->assertSame($p, $p->then());
}
public function testAsynchronouslyInvokesOnFulfilled()
{
$p = new FulfilledPromise('a');
$r = null;
$f = function ($d) use (&$r) { $r = $d; };
$p2 = $p->then($f);
$this->assertNotSame($p, $p2);
$this->assertNull($r);
\GuzzleHttp\Promise\queue()->run();
$this->assertEquals('a', $r);
}
public function testReturnsNewRejectedWhenOnFulfilledFails()
{
$p = new FulfilledPromise('a');
$f = function () { throw new \Exception('b'); };
$p2 = $p->then($f);
$this->assertNotSame($p, $p2);
try {
$p2->wait();
$this->fail();
} catch (\Exception $e) {
$this->assertEquals('b', $e->getMessage());
}
}
public function testOtherwiseIsSugarForRejections()
{
$c = null;
$p = new FulfilledPromise('foo');
$p->otherwise(function ($v) use (&$c) { $c = $v; });
$this->assertNull($c);
}
public function testDoesNotTryToFulfillTwiceDuringTrampoline()
{
$fp = new FulfilledPromise('a');
$t1 = $fp->then(function ($v) { return $v . ' b'; });
$t1->resolve('why!');
$this->assertEquals('why!', $t1->wait());
}
}