metadata service

src/app/shared/mocks/mock-host-window-service.ts

@@ -0,0 +1,19 @@
+import { Observable } from 'rxjs/Observable';
+
+// declare a stub service
+export class MockHostWindowService {
+
+  private width: number;
+
+  constructor(width) {
+    this.setWidth(width);
+  }
+
+  setWidth(width) {
+    this.width = width;
+  }
+
+  isXs(): Observable<boolean> {
+    return Observable.of(this.width < 576);
+  }
+}