Testing Angular Service with Jest

I am trying to test the following method

  const httpOptions = {
    headers: new HttpHeaders({
      'Content-Type': 'application/json'
    })
  };

  login(user, password) {
    this.loadingLogin.next(true);
    return this.http.post(this.loginUrl, JSON.stringify({
      user,
      password
    }), this.httpOptions)
      .pipe(
        catchError(error => this.errorHandleService.handleError('login', error)),
        finalize(() => this.loadingLogin.next(false))
      );
  }

expect(httpMock.post.mock.calls[0][2]).toBe(httpOptions);

but when I go to run it, it gives the following error Object.is equality

- Expected  - 1
+ Received  + 3

- HttpHeaders {
+ Object {
+   "headers": HttpHeaders {
      "lazyInit": [Function anonymous],
      "lazyUpdate": null,
      "normalizedNames": Map {},
+   },
  }

what would be the correct syntax?