'use strict';

const common = require('../common');

const assert = require('assert').strict;

/* eslint-disable no-restricted-properties */

const { WriteStream } = require('tty');

const fd = common.getTTYfd();

const writeStream = new WriteStream(fd);

{

const depth = writeStream.getColorDepth();

assert.equal(typeof depth, 'number');

assert(depth >= 1 && depth <= 24);

if (depth === 1) {

// Terminal does not support colors, compare to a value that would.

assert.notEqual(writeStream.getColorDepth({ COLORTERM: '1' }), depth);

} else {

// Terminal supports colors, compare to a value that would not.

assert.notEqual(writeStream.getColorDepth({ TERM: 'dumb' }), depth);

}

}

// Deactivate colors

{

const tmp = process.env.NODE_DISABLE_COLORS;

process.env.NODE_DISABLE_COLORS = 1;

const depth = writeStream.getColorDepth();

assert.equal(depth, 1);

process.env.NODE_DISABLE_COLORS = tmp;

}