fixing network and network test error

frontend/app/gallery/grid/grid.gallery.component.ts

@@ -131,14 +131,18 @@ export class GalleryGridComponent implements OnChanges, AfterViewInit {
   private renderedPhotoIndex: number = 0;
 
   private renderPhotos(numberOfPhotos: number = 0) {
-    if (this.containerWidth == 0 || this.renderedPhotoIndex >= this.photos.length || !this.shouldRenderMore()) {
+    if (this.containerWidth == 0 ||
+      this.renderedPhotoIndex >= this.photos.length ||
+      !this.shouldRenderMore()) {
       return;
     }
 
 
     let renderedContentHeight = 0;
 
-    while (this.renderedPhotoIndex < this.photos.length && (this.shouldRenderMore(renderedContentHeight) === true || this.renderedPhotoIndex < numberOfPhotos)) {
+    while (this.renderedPhotoIndex < this.photos.length &&
+    (this.shouldRenderMore(renderedContentHeight) === true ||
+    this.renderedPhotoIndex < numberOfPhotos)) {
       let ret = this.renderARow();
       if (ret === null) {
         throw new Error("Gridphotos rendering failed");
@@ -150,7 +154,7 @@ export class GalleryGridComponent implements OnChanges, AfterViewInit {
 
   /**
    * Returns true, if scroll is >= 70% to render more images.
-   * Or of onscroll renderin is off: return always to render all the images at once
+   * Or of onscroll rendering is off: return always to render all the images at once
    * @param offset Add height to the client height (conent is not yet added to the dom, but calculate with it)
    * @returns {boolean}
    */

frontend/app/model/network/network.service.spec.ts

@@ -4,6 +4,7 @@ import {MockBackend, MockConnection} from "@angular/http/testing";
 import "rxjs/Rx";
 import {NetworkService} from "./network.service";
 import {Message} from "../../../../common/entities/Message";
+import {SlimLoadingBarService} from "ng2-slim-loading-bar";
 
 
 describe('NetworkService Success tests', () => {
@@ -20,6 +21,7 @@ describe('NetworkService Success tests', () => {
       providers: [
         MockBackend,
         BaseRequestOptions,
+        SlimLoadingBarService,
         {
           provide: Http, useFactory: (backend, options) => {
           return new Http(backend, options);
@@ -108,6 +110,8 @@ describe('NetworkService Fail tests', () => {
       providers: [
         MockBackend,
         BaseRequestOptions,
+        SlimLoadingBarService,
+
         {
           provide: Http, useFactory: (backend, options) => {
           return new Http(backend, options);

frontend/app/model/network/network.service.ts

@@ -1,9 +1,9 @@
 import {Injectable} from "@angular/core";
 import {Headers, Http, RequestOptions} from "@angular/http";
 import {Message} from "../../../../common/entities/Message";
+import {SlimLoadingBarService} from "ng2-slim-loading-bar";
 import "rxjs/Rx";
 
-import {SlimLoadingBarService} from "ng2-slim-loading-bar";
 @Injectable()
 export class NetworkService {
 
@@ -28,8 +28,8 @@ export class NetworkService {
     };
 
     const err = (err) => {
-      NetworkService.handleError(err);
       this.slimLoadingBarService.complete();
+      return NetworkService.handleError(err);
     };
 
     if (method == "get" || method == "delete") {