techeverri

# The Whop chop: how we cut a Rails test suite and CI time in half

> Evil Martians cut Whop’s Rails test suite and CI time in half using profiling, factory optimizations, and parallelization. Learn how we speed up tests and boost reliability.

- Date: 2025-09-03T00:00:00.000Z
- Authors: Igor Platonov, Travis Turner
- Categories: Developer Community, Rails
- URL: https://evilmartians.com/chronicles/the-whop-chop-how-we-cut-a-rails-test-suite-and-ci-time-in-half

---

techeverri

#!/usr/bin/env node

import path from "path";
import url from "url";

const __dirname = path.dirname(url.fileURLToPath(import.meta.url));

console.log({ __dirname });

techeverri

const { useState, useEffect, useRef } = React;

const GITHUB_USERS_API_URL = "https://api.github.com/users";
const GITHUB_CLIENT_ID = "8b7993e07c6a5750c784";
const GITHUB_CLIENT_SECRET = "fd815b52e8b01fd07995f30ba54f3b799d9ef93e";

const USER_CACHE_MAX_SIZE = 5;

const useCache = (cacheMaxSize) => {
  const { current: cache } = useRef(new Map());

techeverri

<!DOCTYPE html>
<html>
<head>
	<meta charset="utf-8"/>
	<title>Reduce + Spread vs Reduce + Property #jsbench #jsperf</title>
	<script src="https://cdnjs.cloudflare.com/ajax/libs/benchmark/1.0.0/benchmark.min.js"></script>
	<script src="./suite.js"></script>
</head>
<body>
	<h1>Open the console to view the results</h1>

techeverri

<!DOCTYPE html>
<html>

<head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <title>Math Birthdays</title>
    <link rel="stylesheet" href="https://unpkg.com/flatpickr/dist/flatpickr.min.css">
    <link rel="stylesheet" type="text/css" href="https://npmcdn.com/flatpickr/dist/themes/material_green.css">
    <style>

techeverri

(function () {

    'use strict';

    var fs = require('fs');
    var https = require('https');

    var cursor = '';
    var pushes = [];

techeverri

{
    "env": {
        "browser": true
    },
    "extends": "eslint:recommended",
    "rules": {
        "indent": [
            "error",
            4
        ],

techeverri

.github-avatar {
  font-family: Roboto, sans-serif;
}
.header {
  background-color: #2196F3;
  padding: 15px;
  color: white;
}
.user-search {
float: right;

techeverri

@ECHO OFF
SET /A TIMER = 15
:LOOP
SHUTDOWN /A
TIMEOUT /T
GOTO LOOP