javascript - 如何使用 visual studio 代码调试 javascript 中的 mocha 测试？

Question

如果你使用的是node，调试起来很容易:

//.vscode/launch.json
"configurations": [
    {
        "name": "Launch",
        "type": "node",
        "request": "launch",
        ...

但是如果我使用的是 mocha 测试，我该如何调试呢？

我尝试过使用:

"configurations": [
    {
        "name": "Launch",
        "type": "mocha",
        "request": "launch",

但这是无效的。有人知道吗？

Answer 1

1. 在 .vscode/launch.json 中创建这个新的调试目标

   {
       "name": "Unit tests",
       "type": "node",
       "program": "${workspaceRoot}/mocha.js",
       "stopOnEntry": true,
       "args": ["${workspaceRoot}/TESTTODEBUG.js"],
       "runtimeExecutable": null,
       "env": {
           "NODE_ENV": "test"
        }
   

2. 创建文件 mocha.js

   'use strict';
   
   // Dependencies
   var Mocha = require('mocha');
   
   // Determine which tests to run based on argument passed to runner
   var args = process.argv.splice(2);
   //var args = ["./tests/unit/services/supra-statement.service.test.js"];
   var files;
   
   
   
   //Define Mocha
   var mocha = new Mocha({
     timeout: 60000,
     reporter: 'spec',
     globals: ['Associations', 'CREATE_TEST_WATERLINE', 'DELETE_TEST_WATERLINE']
   });
   
   args.forEach(mocha.addFile.bind(mocha));
   
   //Run unit tests
   mocha.run(function (failures) {
       process.exit(failures);
   });
   

3. 使用单元测试选项运行调试器