public function testDoesNotTryToFulfillTwiceDuringTrampoline()
{
$fp = new FulfilledPromise('a');
$t1 = $fp->then(function ($v) {
return $v . ' b';
});
$t1->resolve('why!');
$this->assertEquals('why!', $t1->wait());
}
public static function run(callable $callback, $value = null)
{
$promise = new FulfilledPromise($value);
return $promise->then($callback);
}