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denoland-deno/cli/tests/node_compat/test/parallel/test-readline-undefined-columns.js
2023-06-02 15:05:32 +09:00

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// deno-fmt-ignore-file
// deno-lint-ignore-file
// Copyright Joyent and Node contributors. All rights reserved. MIT license.
// Taken from Node 18.12.1
// This file is automatically generated by `tools/node_compat/setup.ts`. Do not modify this file manually.
'use strict';
const common = require('../common');
const assert = require('assert');
const PassThrough = require('stream').PassThrough;
const readline = require('readline');
common.skipIfDumbTerminal();
// 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.match(output, new RegExp(expect));
}));
iStream.write('process.s\t');
// Completion works.
assert.match(output, /process\.std\b/);
// Completion doesnt show all results yet.
assert.doesNotMatch(output, /stdout/);
iStream.write('\t');
oStream.end();