[英]Best practices for using sinon for nodeJS unit testing
我来自 Spring 框架的 Java 经验,正在寻找在 nodejs 中使用模拟编写测试的最优雅方式。
对于java,它看起来像这样:
@RunWith(SpringJUnit4ClassRunner.class)
public class AccountManagerFacadeTest {
@InjectMocks
AccountManagerFacade accountManagerFacade;
@Mock
IService service
@Test
public void test() {
//before
here you define specific mock behavior
//when
//then
}
}
为 nodeJS 寻找类似的东西,有什么建议吗?
由于 javascript 的灵活性,使用 node.js 进行模拟比 Java 容易得多。
这是类模拟的完整示例,具有以下类:
// lib/accountManager.js
class AccountManager {
create (name) {
this._privateCreate(name);
}
update () {
console.log('update')
}
delete () {
console.log('delete')
}
_privateCreate() {
console.log('_privateCreate')
}
}
module.exports = AccountManager
你可以像这样嘲笑它:
// test/accountManager.test.js
const
sinon = require('sinon'),
should = require('should')
AccountManager = require('../lib/accountManager');
require('should-sinon'); // Required to use sinon helpers with should
describe('AccountManager', () => {
let
accountManager,
accountManagerMock;
beforeEach(() => {
accountManagerMock = {
_privateCreate: sinon.stub() // Mock only desired methods
};
accountManager = Object.assign(new AccountManager(), accountManagerMock);
});
describe('#create', () => {
it('call _privateCreate method with good arguments', () => {
accountManager.create('aschen');
should(accountManagerMock._privateCreate).be.calledOnce();
should(accountManagerMock._privateCreate).be.calledWith('aschen');
})
});
});
在这里你可以找到更多关于模拟类和依赖项的例子: https : //github.com/Aschen/workshop-tdd/blob/master/step2/test/file.test.js
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