React\Promise\PromiseTest\RejectTestTrait::doneShouldThrowUnhandledRejectionExceptionWhenRejectionHandlerRejects PHP Method

    public function doneShouldThrowUnhandledRejectionExceptionWhenRejectionHandlerRejects()
    {
        $adapter = $this->getPromiseTestAdapter();
        $this->setExpectedException('React\\Promise\\UnhandledRejectionException');
        $this->assertNull($adapter->promise()->done(null, function () {
            return \React\Promise\reject();
        }));
        $adapter->reject(1);
    }