wait for 30s between each call to the webhooks

src/main/java/fr/sayasoft/fake/zinc/FakeZincController.java

     }
 
     /**
-     * Fake method to test order posting
+     * Fake method to test order posting.<br/>
      * Conventions for testing:
      * <ul>
      * <li>if the unmarshalled OrderRequest has a field clientNotes that is a ZincErrorCode, then a ZincError will be returned.</li>
      * <li>else a response containing the idemPotency in the requestId is returned</li>
+     * <li>when webhooks are given in the OrderRequest in parameter, then these webhooks are called in the order they are written, with a pause
+     * (<code>Thread.sleep</code>) of 30 seconds</li>
      * </ul>
      */
     @SuppressWarnings("unused")
         orderRequest.getWebhooks()
                 .forEach((zincWebhookType, url) -> {
                             log.info("Calling webhook for zincWebhookType: " + zincWebhookType + " and URL: " + url);
+                            try {
+                                Thread.sleep(30000);
+                            } catch (InterruptedException e) {
+                                e.printStackTrace();
+                            }
                             restTemplate.postForObject(url, orderResponse, String.class);
                         }
                 );

src/test/java/fr/sayasoft/fake/zinc/FakeZincControllerUnitTest.java

     }
 
     @Test
-    @Ignore
+    @Ignore("Run this test only when a webserver can receive and handle the request")
     public void postOrder_withWebHooks() throws Exception {
         final String idempotencyKey = "Carina-β-Carinae-Miaplacidus";
         orderRequest.setIdempotencyKey(idempotencyKey);
         orderRequest.setWebhooks(new HashMap<>(2));
-//        orderRequest.getWebhooks().put(ZincWebhookType.statusUpdated, "https://reqres.in/api/users");
-//        orderRequest.getWebhooks().put(ZincWebhookType.requestSucceeded, "https://reqres.in/api/users");
         orderRequest.getWebhooks().put(ZincWebhookType.statusUpdated, "http://localhost:8080/hook/zinc?eventType=statusUpdated&uuid=abcd");
         orderRequest.getWebhooks().put(ZincWebhookType.requestSucceeded, "http://localhost:8080/hook/zinc?eventType=requestSucceeded&uuid=abcd");
         this.mockMvc.perform(post("/v1/order")