tns test fails with error "ReferenceError: Can't find variable: Zone"

Tell us about the problem

Please, ensure your title is less than 63 characters long and starts with a capital
letter.

Which platform(s) does your issue occur on?

iOS, Android

Please provide the following version numbers that your issue occurs with:

• CLI: (run tns --version to fetch it)
  3.4.0

• Cross-platform modules: (check the 'version' attribute in the
  node_modules/tns-core-modules/package.json file in your project)
  3.3.0

• Runtime(s): (look for the "tns-android" and "tns-ios" properties in the
  package.json file of your project)
  3.0.0

Please tell us how to recreate the issue in as much detail as possible.

• Build a service that requires injection of TranslateService (from ng-translate)
• Inject that service in beforeEach() of a test suite.

Is there code involved? If so, please share the minimal amount of code needed to recreate the problem.

error.service.test.ts

'use strict';

import {ErrorService} from '../services/error.service';
import {inject} from "@angular/core/testing";

declare let assert: Chai.AssertStatic;

describe("ErrorService tests", () => {

    let service = null;

    beforeEach((done) => {
        inject([ErrorService], (injectService: ErrorService) => {
            service = injectService;
            done();
        });
    });

    it("Service exists", (done) => {
        assert.exists(service);
        done();
    });

});

error.service.ts

import { Injectable } from "@angular/core";
import { TranslateService } from "ng2-translate";

@Injectable()
export class ErrorService {

    constructor(private i18n: TranslateService) {
    }
}

Start by reproducing the reported tns test failure using the versions listed for the CLI, modules, and runtimes. Read error.service.test.ts and error.service.ts, focusing on the Angular testing injection in beforeEach(). Done means the service test runs on both iOS and Android without the ReferenceError about Zone.