单元测试express.js路线

Question

我对表达很陌生，对单元测试也很陌生。考虑以下代码：

var express = require('express');
var router = express.Router();

var bookingsController = require ("../controllers/bookings");

router
   .route('/')
   .get(bookingsController.bookings_get)
   .post(bookingsController.bookings_post)


router
   .route('/:id')
   .get(bookingsController.bookings_get_id)
   .put(bookingsController.bookings_put_id)
   .delete(bookingsController.bookings_delete_id)

module.exports = router;

为此编写单元测试的正确/推荐方法是什么？例如，我希望能够测试router.route('/:id')不接受 POST 调用。

我知道我可以使用超级测试来做到这一点，但我相信这将被视为集成测试，因为超级测试将启动应用程序来运行测试。

我已经阅读并尝试了多个 node.js/express.js 测试教程，但找不到答案。非常欢迎任何指向现有教程的指示。这里直接回答，甚至更多:)

Answer 1

sinon.js这是使用存根express.Router函数并进行断言的单元测试解决方案。

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router.js：

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var express = require(\'express\');\nvar router = express.Router();\n\nvar bookingsController = require(\'./controllers/bookings\');\n\nrouter\n  .route(\'/\')\n  .get(bookingsController.bookings_get)\n  .post(bookingsController.bookings_post);\n\nrouter\n  .route(\'/:id\')\n  .get(bookingsController.bookings_get_id)\n  .put(bookingsController.bookings_put_id)\n  .delete(bookingsController.bookings_delete_id);\n\nmodule.exports = router;\n

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./controller/bookings.js：

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module.exports = {\n  bookings_get() {},\n  bookings_post() {},\n  bookings_get_id() {},\n  bookings_put_id() {},\n  bookings_delete_id() {},\n};\n

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router.test.js：

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var sinon = require(\'sinon\');\nvar express = require(\'express\');\n\ndescribe(\'61529619\', () => {\n  it(\'should pass\', () => {\n    const routerStub = {\n      route: sinon.stub().returnsThis(),\n      post: sinon.stub().returnsThis(),\n      get: sinon.stub().returnsThis(),\n      put: sinon.stub().returnsThis(),\n      delete: sinon.stub().returnsThis(),\n    };\n    sinon.stub(express, \'Router\').callsFake(() => routerStub);\n    require(\'./router\');\n    sinon.assert.calledWith(routerStub.route, \'/\');\n    sinon.assert.calledWith(routerStub.route, \'/:id\');\n    sinon.assert.calledWith(routerStub.get, sinon.match.func);\n    sinon.assert.calledWith(routerStub.post, sinon.match.func);\n    sinon.assert.calledWith(routerStub.put, sinon.match.func);\n    sinon.assert.calledWith(routerStub.delete, sinon.match.func);\n  });\n});\n

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100%覆盖率的单元测试结果：

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  61529619\n    \xe2\x9c\x93 should pass (869ms)\n\n\n  1 passing (881ms)\n\n----------------------|---------|----------|---------|---------|-------------------\nFile                  | % Stmts | % Branch | % Funcs | % Lines | Uncovered Line #s \n----------------------|---------|----------|---------|---------|-------------------\nAll files             |     100 |      100 |       0 |     100 |                   \n 61529619             |     100 |      100 |     100 |     100 |                   \n  router.js           |     100 |      100 |     100 |     100 |                   \n 61529619/controllers |     100 |      100 |       0 |     100 |                   \n  bookings.js         |     100 |      100 |       0 |     100 |                   \n----------------------|---------|----------|---------|---------|------------------\n

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