### Question:
Sol003PackageManagementSubscriptionController { @DeleteMapping(value = "/subscriptions/{subscriptionId}") public ResponseEntity<?> deleteSubscription(@PathVariable("subscriptionId") final String subscriptionId) { if (subscriptionManager.deleteSubscription(subscriptionId)) { logger.debug("Successfully deleted subscription with id {}", subscriptionId); return ResponseEntity.noContent().build(); } final String errorMessage = "The requested subscription: " + subscriptionId + " was not found on call deleteSubscription"; logger.error(errorMessage); return ResponseEntity.status(HttpStatus.NOT_FOUND).body(new ProblemDetails().detail(errorMessage)); } @Autowired  Sol003PackageManagementSubscriptionController(final SubscriptionManager subscriptionManager); @PostMapping(value = "/subscriptions") ResponseEntity<?> postSubscriptionRequest(@RequestBody final PkgmSubscriptionRequest pkgmSubscriptionRequest); @GetMapping(value = "/subscriptions") ResponseEntity<List<InlineResponse201>> getSubscriptions(); @GetMapping(value = "/subscriptions/{subscriptionId}") ResponseEntity<?> getSubscription(@PathVariable("subscriptionId") final String subscriptionId); @DeleteMapping(value = "/subscriptions/{subscriptionId}") ResponseEntity<?> deleteSubscription(@PathVariable("subscriptionId") final String subscriptionId);  }### Answer:
@Test public void testFailDeleteSubscriptionWithInvalidSubscriptionId() throws URISyntaxException, InterruptedException { final ResponseEntity<Void> responseDelete = (ResponseEntity<Void>) sol003PackageManagementSubscriptionController .deleteSubscription("invalidSubscriptionId"); assertEquals(HttpStatus.NOT_FOUND, responseDelete.getStatusCode()); }