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# 7. Prefer running QUnit tests in node.js
Date: 2017-03-08
## Status
Accepted
## Context
QUnit tests were set up to run on a browser or phantom.js on top of a running
mediawiki server.
We want to:
* Speed up the test running in a development cycle
* Full page reload every time you change tests or source takes too long
* Leverage common.js in our tests to load our sources and other test helpers
like stubs
* Remove global variables
## Decision
QUnit tests will be migrated from `tests/qunit/ext.popups/` to
`tests/node-qunit/` and will be run by the script `npm run test:unit` in a node
environment with access to QUnit, a fake jsdom, and jQuery. Powered by the node
package `mw-node-qunit`.
Node tests will be run in CI too in the npm job that runs `npm test`.
It is preferred to use the node-qunit test environment, as it is fast,
leverages common.js modules, and isolated.
When impossible because of extreme coupling with mediawiki.js, put the
**integration** tests in `tests/qunit/`.
## Consequences
* README has instructions on how to run different types of tests
* Node based QUnit tests...
* can be run independently of mediawiki
* are isolated and need to stub global variables used in sources
* are run in node.js 6+ which runs in CI on wikimedia infrastructure
* which means they leverage that platforms advantages (loading files with
common.js, using es6, using the node stdlib if necessary)
* Most tests are migrated to `tests/node-qunit` and only the ones that strictly
need it remain in `tests/qunit` (`processLinks.test.js` for example, see
comment in file)

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