public function testApiSortProviders_ThrowsException_WhenRequiredDependenciesCouldNotBeResolved()
{
$sorter = $this->createSorter();
$before = [$b = new BProvider(), $c = new CProvider(), $d = new DProvider(), $e = new EProvider()];
$this->setExpectedException(ResourceUndefinedException::class);
$sorter->sortProviders($before);
}