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'use strict';
const common = require('../common');
const assert = require('assert').strict;
const { WriteStream } = require('tty');
const fd = common.getTTYfd();
const writeStream = new WriteStream(fd);
{
const depth = writeStream.getColorDepth();
assert.strictEqual(typeof depth, 'number');
assert(depth >= 1 && depth <= 24);
}
// Check different environment variables.
[
[{ COLORTERM: '1' }, 4],
[{ TMUX: '1' }, 8],
[{ CI: '1' }, 1],
[{ CI: '1', TRAVIS: '1' }, 8],
[{ CI: '1', CIRCLECI: '1' }, 8],
[{ CI: '1', APPVEYOR: '1' }, 8],
[{ CI: '1', GITLAB_CI: '1' }, 8],
[{ CI: '1', CI_NAME: 'codeship' }, 8],
[{ TEAMCITY_VERSION: '1.0.0' }, 1],
[{ TEAMCITY_VERSION: '9.11.0' }, 4],
[{ TERM_PROGRAM: 'iTerm.app' }, 8],
[{ TERM_PROGRAM: 'iTerm.app', TERM_PROGRAM_VERSION: '3.0' }, 24],
[{ TERM_PROGRAM: 'iTerm.app', TERM_PROGRAM_VERSION: '2.0' }, 8],
[{ TERM_PROGRAM: 'HyperTerm' }, 24],
[{ TERM_PROGRAM: 'Hyper' }, 24],
[{ TERM_PROGRAM: 'MacTerm' }, 24],
[{ TERM_PROGRAM: 'Apple_Terminal' }, 8],
[{ TERM: 'xterm-256' }, 8],
[{ TERM: 'ansi' }, 4],
[{ TERM: 'ANSI' }, 4],
[{ TERM: 'color' }, 4],
[{ TERM: 'linux' }, 4],
[{ TERM: 'fail' }, 1],
[{ NODE_DISABLE_COLORS: '1' }, 1],
[{ TERM: 'dumb' }, 1],
[{ TERM: 'dumb', COLORTERM: '1' }, 4],
].forEach(([env, depth], i) => {
const actual = writeStream.getColorDepth(env);
assert.strictEqual(
actual,
depth,
`i: ${i}, expected: ${depth}, actual: ${actual}, env: ${env}`
);
});
// OS settings
{
const platform = Object.getOwnPropertyDescriptor(process, 'platform');
const [ value, depth1, depth2 ] = process.platform !== 'win32' ?
['win32', 1, 4] : ['linux', 4, 1];
assert.strictEqual(writeStream.getColorDepth({}), depth1);
Object.defineProperty(process, 'platform', { value });
assert.strictEqual(writeStream.getColorDepth({}), depth2);
Object.defineProperty(process, 'platform', platform);
}
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