CircleCI Teachback

This repo will be used for TSM's to practice implementing CircleCI features on a basic Node application. We will meet as a group and have the TSMs explain how they implemented these features.

Objectives

The objective of this activity is to have TSMs practice implementing the following:

• Test splitting
• Contexts
• Uploading test results

How this Repo Works

This repo is broken down by branches.

• 0: This is the starter branch with a basic build, test, deploy, workflow. The task is to take this branch and add test splitting, upload the test results, and add contexts for the deployment secrets.

Prerequisites

1. Fork this repository to your personal GitHub account.
2. Setup the CircleCI project in your account
   • Point to the branch titled 0 for the config file
3. Setup a Google App Engine app.

Instructions

The premise of this activity is that you have created a basic Node.js application and have a workflow on CircleCI that builds, tests, and deploys that application. The platform team you are a part of wants to implement a few CircleCI features to improve the CI/CD pipeline. Your job is to add contexts to the project to keep the organizations secrets safe, add test splitting to improve workflow run time, and store test results to detect any flaky tests and make improvements over time.

Inside this repo are several directories and files. Below is a quick explaination of what they are. You will only make edits to the .circleci/config.yml file, however.

• test : this directory contains the test files. You will need to point CircleCI to this directory when test splitting.

• node_modules: contains all node modules needed to run this application

• public: this directory contains the website page files

• app.js: this JavaScript contains the code to navigate the website

• package.json: contains required packages for the app

• server.js: this JavaScript runs the application

Add a new Context

Implement Test Splitting

Upload Test Results

Right Size Compute