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'use strict';
const common = require('../common');
const assert = require('assert').strict;
/* eslint-disable no-restricted-properties */
const { openSync } = require('fs');
const tty = require('tty');
const { WriteStream } = require('tty');
// Do our best to grab a tty fd.
function getTTYfd() {
const ttyFd = [1, 2, 4, 5].find(tty.isatty);
if (ttyFd === undefined) {
try {
return openSync('/dev/tty');
} catch (e) {
// There aren't any tty fd's available to use.
return -1;
}
}
return ttyFd;
}
const fd = getTTYfd();
// Give up if we did not find a tty
if (fd === -1)
common.skip();
const writeStream = new WriteStream(fd);
let depth = writeStream.getColorDepth();
assert.equal(typeof depth, 'number');
assert(depth >= 1 && depth <= 24);
// If the terminal does not support colors, skip the rest
if (depth === 1)
common.skip();
assert.notEqual(writeStream.getColorDepth({ TERM: 'dumb' }), depth);
// Deactivate colors
const tmp = process.env.NODE_DISABLE_COLORS;
process.env.NODE_DISABLE_COLORS = 1;
depth = writeStream.getColorDepth();
assert.equal(depth, 1);
process.env.NODE_DISABLE_COLORS = tmp;
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