vuejs-test-utils-plugin-vuex-memory-issue

Attempting to replicate an issue I have seen in a larger project (8,000+ tests) that runs out of heap memory during full test suite run.

See this vuejs/test-tils issue for more details.

This project was created from from vue-cli v4 (webpack, vuex, mocha). I have modified the one and only test in that project to attempt to demonstrate the issue:

1. Looped single test many times
2. Created a store and added to global.plugins for each test.
   1. I used this exmaple to create/add the store.
3. Added unmount at the end of each test

I am testing by running npm run unitI then inspecting with chrome devtools. I observe that

• The togal JS heap size continues to grow
• When looking at Allocation instrumentation on timeline, each test seems to leak memory

When I run the original test (no store, no plugins) I do not see this memory leak.

Project setup

Currently running with

• node v14.18.1
• npm 6.14.15

npm install

Compiles and hot-reloads for development

npm run serve

Compiles and minifies for production

npm run build

Run your unit tests

npm run unit

Run with --inspect-brk and long timeout to accommodate profiling overhead

npm run unitI

Lints and fixes files

npm run lint

Customize configuration

See Configuration Reference.