Send your Mocha test suite's progress to Atom and display it using Atom-IDE-UI components

atom, atom-ide, atom-package, javascript, mocha, mocha-reporter
apm install ide-mocha@1.6.0



Stream Mocha progress to Atom ☕️ + ⚛️ = 🚀


This package allows Mocha to send its progress reports (which are normally shown on your Terminal window) to Atom and then do all kinds of interesting things with it, like

  • showing progress logs in the Console
  • spinning the busy signal while Mocha is crunching your tests
  • displaying Diagnostics messages when tests fail, complete with stack traces and code locations 😍

IDE-Mocha in action


  • Make sure you have Atom-IDE-UI installed
  • Install IDE-Mocha: apm install ide-mocha
  • Install a Mocha reporter which feeds the progress data to Atom: npm i --save-dev mocha-reporter-remote

Now you can use the custom reporter. The reporter needs to know where to send the progress data. The easiest way to see how to run Mocha is to execute ide-mocha:show-help from the command pallete. 💪 Generally this looks like this:

# Using Unix socket connections
npx mocha --reporter mocha-reporter-remote --reporter-options address=/var/folders/np/yp1y_nk504b0k61prl2pk4b40000gn/T/mocha-reporter-remote.sock

# Using TCP connections
npx mocha --reporter mocha-reporter-remote --reporter-options address=12345

Each project uses its own socket and port which remains stable even if you quit Atom, so it's safe to persist the socket/port info in your project config/environment variables or any other suitable place. If you don't have "any other suitable place" you can always use ide-mocha:copy-receiver-address from the command pallete to get the socket path/port number for your current session, or ide-mocha:copy-mocha-command to get the full command which you can just paste into a terminal. 💪


None 😇, but I suspect some will appear eventually, especially in these areas:

  • Windows & sockets: I am not sure how sockets work on Windows and I did not make any effort to ensure socket connections (pipes) work. If you are on Windows, make sure to select IP as the preferred interface type from the package settings - standard TCP networking should work just fine.
  • Diagnostics & placement: I did my best to come up with something general enough for determining where to place the error in case of a failed test but there are possibilities where the error will get misplaced on some irrelevant location in code or won't be placed at all. This is definitely something I'd like to keep fixing as I discover edge cases. If you encounter one, please share as much as possible about the error, its actual and reported location so I can pinpoint the problem.

... but why?

Because existing Mocha integrations for Atom kinda suck. They either do not work at all, implement custom UI elements which look weird and do not integrate well into Atom (or your current theme 🎨), or force you into giving up your test toolchain because they want to spawn Mocha for you in unexpected ways. This package has no such restrictions - all you need on your end is to install one dev dependency and pass two flags to Mocha to make the whole thing work. And the test suite could be started with a custom binary, make, or heck, even from inside a Docker container (disclaimer: untested but should work in theory)! As long as Mocha can connect to the local socket or TCP port this is guaranteed to work. 💪

Ugly gif

One picture is worth a thousand words, and a gif has many pictures... It's ugly, but it shows all the bits & pieces of this thing.

ide-mocha in action


Please do! 🙏 If you have feedback, problems, or ideas, please open an issue and I'll do my best to help you out.

Future plans

  • Test suite 🤦
  • Verify that the stack traces get properly placed if enough information about the error is available
  • Monitor the general stability of the package and fix potential issues
  • Tweak and enhance general usability (ie. an Atom command to paste the Mocha command to the IDE Terminal? Or an Atom command which actually, optionally, spawns the Mocha process, just as a convenience? 🤔)
  • ... profit! 💰


See the LICENSE file for information.