jest-observer

A library for running jest in watch-mode within a system and record the test-output.

This can be used to intergrate jest into your development tool.

Install

yarn add jest-observer

npm install jest-observer

Usage

const observer = require('jest-observer');

observer({
  config: path.join(__dirname, './jest.json')
}, (results) => {
  console.log('\n', results);
});

Options

The observer supports these options:

config

Path to a jest config file same as in jest -c <configfile>

out

Node Stream of jest's normal terminal output (stdout)

err

Node Stream of jest's err terminal output (stderr)

more

TODO

Callback

The callback will receive the jest test-result json identical as jest --json.

The json will only contain data on the tests jest has run, which will only be what is staged. I plan to add an 'run-all-on-first-run' option.

Why make this?

I'm interested in adding real-time jest test-results to react-storybook. And I wanted to learn how to do some process management and communication in nodeJS.

Known issues

If you use the jest config option: testResultsProcessor, it will be ignored, since this is what's being used to capture the test-results.