我得到了这个错误
Cannot find module 'httpsGet' from 'functions/getSecureString.test.js'
httpsGet()
是我自己的函数,位于getSecureString.js
按钮上,由getSecureString()
调用。httpsGet()
使用https
模块从需要客户端证书的网站获取内容。
我试图模拟httpsget()
,我猜我遇到的问题是因为它没有包含在require()
中,因此jest.mock('httpsget')
失败。
有没有人知道是不是这样的,我该怎么解决呢?
现场示例:https://repl./@sandraschlichti/jest-playground-4
GetSecureString.test.js
const getStatusCode = require('./getSectureString');
jest.mock('httpsGet');
describe("getSecureString ", () => {
describe('when httpsGet returns expected statusCode and body includes expected string', () => {
let result;
beforeAll(async () => {
httpsGet.mockResolvedValue({
statusCode: 200,
body: 'xyz secret_string xyz'
})
result = await getSecureString({
hostname: 'encrypted.google.com',
path: '/',
string: 'secret_string',
statusCode: 200,
aftaleId: 1234,
certFile: 1234,
keyFile: 1234,
timeout: 1000,
})
});
it('should return 1', () => {
expect(result).toEqual(1)
})
});
describe('when httpsGet returns expected statusCode and body includes expected string', () => {
let result;
beforeAll(async () => {
httpsGet.mockResolvedValue({
statusCode: 200,
body: 'xyz secret_string xyz'
})
result = await getSecureString({
hostname: 'encrypted.google.com',
path: '/',
string: 'not_secret_string',
statusCode: 201,
aftaleId: 1234,
certFile: 1234,
keyFile: 1234,
timeout: 1000,
})
});
it('should return 0', () => {
expect(result).toEqual(0)
})
});
describe("when an exception is thrown", () => {
let result;
beforeAll(async () => {
// mockRejected value returns rejected promise
// which will be handled by the try/catch
httpsGet.mockRejectedValue({
statusCode: 200,
body: 'xyz secret_string xyz'
})
result = await getSecureString();
})
it('should return -1', () => {
expect(result).toEqual(-1)
})
});
});
GetSecureString.js
const fs = require('fs');
const https = require('https');
var uuid = require('uuid');
const {v4: uuidv4} = require('uuid');
module.exports = async function getSecureString(options) {
options = options || {};
options.hostname = options.hostname || {};
options.path = options.path || '/';
options.string = options.string || {};
options.statusCode = options.statusCode || {};
options.aftaleId = options.aftaleId || {};
options.certFile = options.certFile || {};
options.keyFile = options.keyFile || {};
options.timeout = options.timeout || 0;
const opt = {
hostname: options.hostname,
port: 443,
path: options.path,
method: 'GET',
cert: fs.readFileSync(options.certFile),
key: fs.readFileSync(options.keyFile),
headers: {'AID': options.aftaleId
},
};
opt.agent = new https.Agent(opt);
try {
const r = await httpsGet(opt, options.timeout);
return (r.statusCode === options.statusCode && r.body.includes(options.string)) ? 1 : 0;
} catch (error) {
console.error(error);
}
};
function httpsGet(opts, timeout) {
return new Promise((resolve, reject) => {
const req = https.get(opts, (res) => {
let body = '';
res.on('data', (data) => {
body += data.toString();
});
res.on('end', () => {
resolve({body, statusCode: res.statusCode});
});
});
req.setTimeout(timeout, function() {
req.destroy('error');
});
req.on('error', (e) => {
console.error(e);
reject(e);
});
});
};
在被声明的同一模块中使用的函数不能被监视和模仿,除非它一致地作为某个对象的方法,这是累赘的,并且与ES模块不兼容:
module.exports.httpsGet = ...
...
module.exports.httpsGet(...);
否则,应该将一个函数移到另一个模块中,该模块可以被模仿,或者应该按原样进行测试。在这种情况下,底层API(https.get
)可以被模仿。