Using chalk in AVA tests does not colorize the strings

[KnisterPeter]

I noticed that the following code does work as expected

const chalk = require('chalk');
console.log(chalk.blue('hello world')); // as expected the result is blue

but this doesn't

const test = require('ava');
const chalk = require('chalk');
console.log(chalk.blue('hello world')); // NOT expected the result is grey
test(t => t.fail());

I'm using ava 0.17.0 and chalk 1.1.3.

[sindresorhus]

// @thinkimlazy

[thinkimlazy]

Ye that what I meant. Mine test files with no colors, but my terminal supports color. Sindre got colors.
I'll dig into
#1104

[novemberborn]

@sindresorhus @thinkimlazy what is the actual bug here? Is it AVA overriding the chalk settings on a global basis? That seems like an issue with chalks design more than anything.

[unional]

I figure out the problem. It's in the ansi-styles. This issue happens on windows and ansi-styles does not produce the correct string in that environment.

Windows follow this (or something similar, up to Windows 8):
http://www.termsys.demon.co.uk/vtansi.htm

[unional]

This is what's working for me on windows:
https://github.com/unional/aurelia-logging-color/blob/master/src/AnsiBrush.ts#L31

[Qix-]

@unional We do literally the exact same thing. Nobody else has reported any issues on Windows until this bug. There's no difference here. This is probably a configuration issue happening inside of AVA.

[unional]

Mentioned on the ansi-styles issue. It is not the same.

To see the difference:

npm i -g ava
npm i chalk ava aurelia-logging aurelia-logging-color

// index.js
var chalk = require('chalk')
var logging = require('aurelia-logging')
var color = require('aurelia-logging-color')
var test = require('ava')

logging.setLevel(logging.logLevel.debug)
var log = logging.getLogger('some log')
logging.addAppender(new color.ColorAppender())

test(_t => {
  console.log(chalk.bgGreen('suppose to be green'))
  log.debug('log something')
})

ava index.js

[Qix-]

It is the same. Check supports-color level reports, here. Nobody has reported anything on windows other than in this ticket. This is an AVA issue until I see definitive reasoning for it being an ansi-styles problem.

[unional]

Ok. You are correct. I do see that supports-color turn chalk off in win32 environment.

When I worked on aurelia-logging-color, I can't use ansi-style because after bundling all dependencies the library become quite huge, and I recall seeing the color not rendered correctly. That's why I went in and go through the code and the material to figure out how to get it working in my case.

However, right now I can't reproduce the problem. Everything seems to be working fine for chalk, ansi-style and so on. I must be dreaming back then. 😛

As for the OP, I tried chalk.enabled = true to force coloring and it is working. FYI. 🌷

var chalk = require('chalk')
var test = require('ava')

chalk.enabled = true

test(_t => {
  console.log(`bgBlue: ${chalk.bgBlue('bgBlue')} and yellow: ${chalk.yellow('yellow')}`)
  console.log(chalk.bgCyan('cyan'), chalk.bgGreen('green'))
})

[sindresorhus]

Closing as this is working now.