t.Errorf("Expected success, got failure %s", err)
			}
			if err == nil && testCase.expectedFailure {
				t.Error("Expected failure, got success")
			}
		})
	}
}

func initJWKSServer() *httptest.Server {
	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		const jsonkey = `{"keys":
       [
         {"kty":"RSA",