import { HttpEvent, HttpHandler, HttpInterceptor, HttpRequest, HttpResponse } from "@angular/common/http";
import { Injectable } from "@angular/core";
import { Observable, of } from "rxjs";
import { BlobAction } from "./blob-action";

// Mock the HttpClient's interceptor so that HTTP requests are handled locally and not in the real back end.
@Injectable()
export class MockHttpInterceptor implements HttpInterceptor {

  private static responseUrl = {
    imageUrl: "imageUrl"
  }
  private static responseKey = {
    blobKey: "blobKey"
  }

  constructor() { }

  // Handles get / post requests
  intercept(req: HttpRequest<any>, next: HttpHandler): Observable<HttpEvent<any>> {

    if (req.method === "GET" && req.url === '/blob-service?blobAction=' + BlobAction.GET_URL) {
      return of(new HttpResponse({ status: 200, body: MockHttpInterceptor.responseUrl }));
    }
    else if (req.method === "POST" && req.url === MockHttpInterceptor.responseUrl.imageUrl) {
      return of(new HttpResponse({ status: 200, body: MockHttpInterceptor.responseKey }));
    }

    next.handle(req);
  }
}
import { HttpEvent, HttpHandler, HttpInterceptor, HttpRequest, HttpResponse } from "@angular/common/http";
import { Injectable } from "@angular/core";
import { Observable, of } from "rxjs";
import { BlobAction } from "./blob-action";

// Mock the HttpClient's interceptor so that HTTP requests are handled locally and not in the real back end.
@Injectable()
export class MockHttpInterceptor implements HttpInterceptor {

  private responseUrl = {
    imageUrl: "imageUrl"
  }
  private responseKey = {
    blobKey: "blobKey"
  }

  constructor() { }

  // Handles get / post requests
  intercept(req: HttpRequest<any>, next: HttpHandler): Observable<HttpEvent<any>> {

    if (req.method === "GET" && req.url === '/blob-service?blobAction=' + BlobAction.GET_URL) {
      return of(new HttpResponse({ status: 200, body: this.responseUrl }));
    }
    else if (req.method === "POST" && req.url === this.responseUrl.imageUrl) {
      return of(new HttpResponse({ status: 200, body: this.responseKey }));
    }

    next.handle(req);
  }
}
--- 
+++ 
@@ -7,10 +7,10 @@
 @Injectable()
 export class MockHttpInterceptor implements HttpInterceptor {
 
-  private responseUrl = {
+  private static responseUrl = {
     imageUrl: "imageUrl"
   }
-  private responseKey = {
+  private static responseKey = {
     blobKey: "blobKey"
   }
 
@@ -20,10 +20,10 @@
   intercept(req: HttpRequest<any>, next: HttpHandler): Observable<HttpEvent<any>> {
 
     if (req.method === "GET" && req.url === '/blob-service?blobAction=' + BlobAction.GET_URL) {
-      return of(new HttpResponse({ status: 200, body: this.responseUrl }));
+      return of(new HttpResponse({ status: 200, body: MockHttpInterceptor.responseUrl }));
     }
-    else if (req.method === "POST" && req.url === this.responseUrl.imageUrl) {
-      return of(new HttpResponse({ status: 200, body: this.responseKey }));
+    else if (req.method === "POST" && req.url === MockHttpInterceptor.responseUrl.imageUrl) {
+      return of(new HttpResponse({ status: 200, body: MockHttpInterceptor.responseKey }));
     }
 
     next.handle(req);
Make constants in MockHttpInterceptor static
