node/test/parallel/test-readline-undefined-columns.js
Gibson Fahnestock 7a0e462f9f test: use eslint to fix var->const/let
Manually fix issues that eslint --fix couldn't do automatically.

PR-URL: https://github.com/nodejs/node/pull/10685
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Roman Reiss <me@silverwind.io>
2017-01-11 11:43:52 +00:00

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'use strict';
const common = require('../common');
const assert = require('assert');
const PassThrough = require('stream').PassThrough;
const readline = require('readline');
// Checks that tab completion still works
// when output column size is undefined
const iStream = new PassThrough();
const oStream = new PassThrough();
readline.createInterface({
terminal: true,
input: iStream,
output: oStream,
completer: function(line, cb) {
cb(null, [['process.stdout', 'process.stdin', 'process.stderr'], line]);
}
});
let output = '';
oStream.on('data', function(data) {
output += data;
});
oStream.on('end', common.mustCall(() => {
const expect = 'process.stdout\r\n' +
'process.stdin\r\n' +
'process.stderr';
assert(new RegExp(expect).test(output));
}));
iStream.write('process.s\t');
assert(/process.std\b/.test(output)); // Completion works.
assert(!/stdout/.test(output)); // Completion doesnt show all results yet.
iStream.write('\t');
oStream.end();