chalk/test/level.js

import path from 'path';
import test from 'ava';
import execa from 'execa';

// Spoof supports-color
require('./_supports-color')(__dirname);

const chalk = require('../source');

test('don\'t output colors when manually disabled', t => {
	const oldLevel = chalk.level;
	chalk.level = 0;
	t.is(chalk.red('foo'), 'foo');
	chalk.level = oldLevel;
});

test('enable/disable colors based on overall chalk .level property, not individual instances', t => {
	const oldLevel = chalk.level;
	chalk.level = 1;
	const {red} = chalk;
	t.is(red.level, 1);
	chalk.level = 0;
	t.is(red.level, chalk.level);
	chalk.level = oldLevel;
});

test('propagate enable/disable changes from child colors', t => {
	const oldLevel = chalk.level;
	chalk.level = 1;
	const {red} = chalk;
	t.is(red.level, 1);
	t.is(chalk.level, 1);
	red.level = 0;
	t.is(red.level, 0);
	t.is(chalk.level, 0);
	chalk.level = 1;
	t.is(red.level, 1);
	t.is(chalk.level, 1);
	chalk.level = oldLevel;
});

test('disable colors if they are not supported', async t => {
	const {stdout} = await execa.node(path.join(__dirname, '_fixture'));
	t.is(stdout, 'testout testerr');
});

test('chalk.Level enum object', t => {
	const {Level} = chalk;
	t.is(Level.None, 0);
	t.is(Level.Basic, 1);
	t.is(Level.Ansi256, 2);
	t.is(Level.TrueColor, 3);
	t.is(Level[Level.None], 'None');
	t.is(Level[Level.Basic], 'Basic');
	t.is(Level[Level.Ansi256], 'Ansi256');
	t.is(Level[Level.TrueColor], 'TrueColor');
});