[英]How to mock 'request' with proxyquire
我有一個文件foo.js
var request = require('request');
module.exports.getRequest = function (url, headers) {
return new Promise((resolve, reject) => {
request(
{
url: url,
method: "GET",
timeout: 30000,
headers: headers,
},
function (error, response, body) {
if (error) {
reject(error);
}
resolve({response, body});
}
);
});
};
我想為它寫一個測試用例。 但我不能寫。 有人可以幫忙嗎? 我試過這樣的事情。
var proxyquire = require('proxyquire')
, assert = require('assert')
, pathStub = {};
describe('Test', () => {
it('1', () => {
var foo = proxyquire('./foo', {'request': pathStub});
pathStub.request = function (file, option) {
console.log("Request Stub");
option(null, "a", "b");
};
let b = foo.getRequest('file.txt');
assert.strictEqual(foo.getRequest('file.txt'), 'EXTERMINATE, EXTERMINATE THE FILE.TXT');
});
});
錯誤 - (node:15344) UnhandledPromiseRejectionWarning: TypeError: request is not a function
您沒有正確存根request
功能。
例如
foo.js
:
var request = require('request');
module.exports.getRequest = function (url, headers) {
return new Promise((resolve, reject) => {
request(
{
url: url,
method: 'GET',
timeout: 30000,
headers: headers,
},
function (error, response, body) {
if (error) {
reject(error);
}
resolve({ response, body });
},
);
});
};
foo.test.js
:
var proxyquire = require('proxyquire'),
assert = require('assert');
describe('Test', () => {
it('1', async () => {
const requestStub = function (option, callback) {
console.log('Request Stub');
callback(null, 'a', 'b');
};
var foo = proxyquire('./foo', { request: requestStub });
var actual = await foo.getRequest('file.txt');
assert.deepStrictEqual(actual, { response: 'a', body: 'b' });
});
});
單元測試結果:
Test
Request Stub
✓ 1 (1378ms)
1 passing (1s)
----------|---------|----------|---------|---------|-------------------
File | % Stmts | % Branch | % Funcs | % Lines | Uncovered Line #s
----------|---------|----------|---------|---------|-------------------
All files | 85.71 | 50 | 100 | 85.71 |
foo.js | 85.71 | 50 | 100 | 85.71 | 14
----------|---------|----------|---------|---------|-------------------
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