test(stderr): test if stderr work

test/_fixture.js

@@ -1,4 +1,6 @@
 'use strict';
 const chalk = require('..');
+const cherr = require('../stderr');
 
 console.log(chalk.hex('#ff6159')('test'));
+console.error(cherr.hex('#ffe861')('test stderr'));

test/_supports-color.js

@@ -7,6 +7,12 @@ const DEFAULT = {
 		hasBasic: true,
 		has256: true,
 		has16m: true
+	},
+	stderr: {
+		level: 3,
+		hasBasic: true,
+		has256: true,
+		has16m: true
 	}
 };
 

test/stderr.js

@@ -0,0 +1,27 @@
+import path from 'path';
+import test from 'ava';
+import execa from 'execa';
+
+// Spoof supports-color
+require('./_supports-color')(__dirname);
+
+const cherr = require('../stderr');
+
+test('stderr don\'t output colors when manually disabled', t => {
+	cherr.enabled = false;
+	t.is(cherr.red('foo'), 'foo');
+	cherr.enabled = true;
+});
+
+test('stderr enable/disable colors based on overall chalk enabled property, not individual instances', t => {
+	cherr.enabled = false;
+	const {red} = cherr;
+	t.false(red.enabled);
+	cherr.enabled = true;
+	t.true(red.enabled);
+	cherr.enabled = true;
+});
+
+test('disable colors if they are not supported', async t => {
+	t.is(await execa.stderr('node', [path.join(__dirname, '_fixture')]), 'test stderr');
+});