为 karma 单元测试获取 json 个文件

Get json file for karma unit test

我想在我的单元测试中得到一个 JSON 文件,因为我的测试需要它,但我不知道如何包含该文件

我运行我对业力和茉莉花的考验。我的项目是用 Angular 2.

创建的

我的 JSON 文件的名称是 'www/assets/mocks/emptyCalendarData.JSON'

有人知道如何将 JSON 文件包含到规范文件中吗?

谢谢

更新

我尝试使用 HTTP get 但后来我得到了一个系统

let calendarData: Calendar;
http.get('www/assets/mocks/emptyCalendarData.json')
    .map(res => res.json())
    .subscribe(
        data => calendarData = data,
        err => console.log(JSON.stringify(err))
    );

然后我得到这个错误:

ERROR: Error{stack: null, originalErr: TypeError{stack: 'mergeOptions
get


eval code
eval@[native code]
__exec@http://localhost:9876/base/node_modules/systemjs/dist/system.src.js?18a094f61af9f2ec0577ca3a337760d97719b624:1482:16
execute@http://localhost:9876/base/node_modules/systemjs/dist/system.src.js?18a094f61af9f2ec0577ca3a337760d97719b624:3896:22
linkDynamicModule@http://localhost:9876/base/node_modules/systemjs/dist/system.src.js?18a094f61af9f2ec0577ca3a337760d97719b624:3222:36
link@http://localhost:9876/base/node_modules/systemjs/dist/system.src.js?18a094f61af9f2ec0577ca3a337760d97719b624:3065:28
execute@http://localhost:9876/base/node_modules/systemjs/dist/system.src.js?18a094f61af9f2ec0577ca3a337760d97719b624:3402:17
doDynamicExecute@http://localhost:9876/base/node_modules/systemjs/dist/system.src.js?18a094f61af9f2ec0577ca3a337760d97719b624:796:32
link@http://localhost:9876/base/node_modules/systemjs/dist/system.src.js?18a094f61af9f2ec0577ca3a337760d97719b624:998:36
doLink@http://localhost:9876/base/node_modules/systemjs/dist/system.src.js?18a094f61af9f2ec0577ca3a337760d97719b624:650:11
updateLinkSetOnLoad@http://localhost:9876/base/node_modules/systemjs/dist/system.src.js?18a094f61af9f2ec0577ca3a337760d97719b624:698:24
http://localhost:9876/base/node_modules/systemjs/dist/system.src.js?18a094f61af9f2ec0577ca3a337760d97719b624:510:30
invoke@http://localhost:9876/base/node_modules/zone.js/dist/zone.js?b9a84410301a475a439d6b7b4e7eff0954f5b925:364:34
run@http://localhost:9876/base/node_modules/zone.js/dist/zone.js?b9a84410301a475a439d6b7b4e7eff0954f5b925:257:50
http://localhost:9876/base/node_modules/zone.js/dist/zone.js?b9a84410301a475a439d6b7b4e7eff0954f5b925:609:61
invokeTask@http://localhost:9876/base/node_modules/zone.js/dist/zone.js?b9a84410301a475a439d6b7b4e7eff0954f5b925:397:43
runTask@http://localhost:9876/base/node_modules/zone.js/dist/zone.js?b9a84410301a475a439d6b7b4e7eff0954f5b925:294:58
drainMicroTaskQueue@http://localhost:9876/base/node_modules/zone.js/dist/zone.js?b9a84410301a475a439d6b7b4e7eff0954f5b925:515:43
invoke@http://localhost:9876/base/node_modules/zone.js/dist/zone.js?b9a84410301a475a439d6b7b4e7eff0954f5b925:467:41
http://localhost:9876/base/node_modules/zone.js/dist/zone.js?b9a84410301a475a439d6b7b4e7eff0954f5b925:92:33
invokeTask@http://localhost:9876/base/node_modules/zone.js/dist/zone.js?b9a84410301a475a439d6b7b4e7eff0954f5b925:397:43
runTask@http://localhost:9876/base/node_modules/zone.js/dist/zone.js?b9a84410301a475a439d6b7b4e7eff0954f5b925:294:58
invoke@http://localhost:9876/base/node_modules/zone.js/dist/zone.js?b9a84410301a475a439d6b7b4e7eff0954f5b925:464:41', line: 38}, line: 821, sourceURL: 'http://localhost:9876/base/node_modules/systemjs/dist/system.src.js?18a094f61af9f2ec0577ca3a337760d97719b624'}

我将 Mock JSON 数据像变量一样存储到 ts 文件中。即

export var getMockResponseJSON = { 'key': value };

稍后当我想访问这个变量时,我只需像这样导入它:

import {getMockResponseJSON} from "../JSONs";

并在我的 class

中使用它
expect(getMockResponseJSON.key).not.toEqual(1);

有很多方法可以做到这一点:

  • 导入 json 如果它在您的应用程序中:import * as json from './test'; //will import test.json
  • 使用 Http 下载文件并执行 map(res=>res.json())
  • 对于 webpack 使用 json-loader 插件:var json = require('./my.json')
  • 对于 gulp/grunt 等你可以编写代码生成器

您可以在测试中利用 Angular2 的 Http class 来做到这一点。

这是 beforeAll 函数中的示例:

beforeAll((done) => {
  let injector = Injector.resolveAndCreate([ HTTP_PROVIDERS ]);
  let http = injector.get(Http);
  http.get('app/data.json').subscribe(
    (data) => {
      this.data = data.json();
      done();
    }
  );
});

看到这个 plunkr:https://plnkr.co/edit/k6jxHf?p=preview