Javascript 笑话中的模拟过程方法
我有一个Javascript 笑话中的模拟过程方法,javascript,node.js,unit-testing,electron,jestjs,Javascript,Node.js,Unit Testing,Electron,Jestjs,我有一个electron util.js文件,我想介绍一下测试: const isElectron = "electron" in process.versions; const isUsingAsar = isElectron && process.mainModule && process.mainModule.filename.includes("app.asar"); export const fixPathForAsarUnpack =
electron util.js
文件,我想介绍一下测试:
const isElectron = "electron" in process.versions;
const isUsingAsar =
isElectron &&
process.mainModule &&
process.mainModule.filename.includes("app.asar");
export const fixPathForAsarUnpack = path =>
isUsingAsar ? path.replace("app.asar", "app.asar.unpacked") : path;
为了测试fixPathForAsarUnpack
方法,我需要从过程中模拟版本和主模块。我试着这样做:
import { fixPathForAsarUnpack } from "../src/electron-util";
test("fixes path for Electron", () => {
process.versions = {
electron: "0.0.0",
mainModule: {
filename: "/app.asar/index.html"
}
};
const path =
"/Users/relix/My.app/Contents/Resources/app.asar/node_modules/foo/binary";
expect(fixPathForAsarUnpack(path)).toBe(
"/Users/relix/My.app/Contents/Resources/app.asar.unpack/node_modules/foo/binary"
);
});
但它抛出了一个错误:
● fixes path for Electron
TypeError: Cannot assign to read only property 'versions' of object '[object process]'
4 |
5 | test("fixes path for Electron", () => {
> 6 | process.versions = {
| ^
7 | electron: "0.0.0",
8 | mainModule: {
9 | filename:
at Object.<anonymous>.test (__test__/electron-util.test.js:6:3)
● 确定电子的路径
TypeError:无法分配给对象“[对象进程]”的只读属性“版本”
4 |
5 |测试(“固定电子路径”,()=>{
>6 | process.versions={
| ^
7 |电子:“0.0.0”,
8 |主模块:{
9 |文件名:
at Object..test(_test\u_/electron util.test.js:6:3)
我做错了什么,我应该如何模拟进程
对象?您应该这样模拟进程:
const originalProcess = process
global.proces = {...originalProcess, version: "your code here"}
// do the test
// ...
// restore the original process object for next tests
global.process = originalProcess
您应该以这种方式模拟流程:
const originalProcess = process
global.proces = {...originalProcess, version: "your code here"}
// do the test
// ...
// restore the original process object for next tests
global.process = originalProcess