node/test/parallel/test-repl-definecommand.js
Rich Trott dcc368f4be tools,lib,test: enable ESLint no-regex-spaces rule
PR-URL: https://github.com/nodejs/node/pull/41463
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Geoffrey Booth <webadmin@geoffreybooth.com>
2022-01-13 17:12:05 -08:00

50 lines
1.3 KiB
JavaScript

'use strict';
require('../common');
const stream = require('stream');
const assert = require('assert');
const repl = require('repl');
let output = '';
const inputStream = new stream.PassThrough();
const outputStream = new stream.PassThrough();
outputStream.on('data', function(d) {
output += d;
});
const r = repl.start({
input: inputStream,
output: outputStream,
terminal: true
});
r.defineCommand('say1', {
help: 'help for say1',
action: function(thing) {
output = '';
this.output.write(`hello ${thing}\n`);
this.displayPrompt();
}
});
r.defineCommand('say2', function() {
output = '';
this.output.write('hello from say2\n');
this.displayPrompt();
});
inputStream.write('.help\n');
assert.match(output, /\n\.say1 {5}help for say1\n/);
assert.match(output, /\n\.say2\n/);
inputStream.write('.say1 node developer\n');
assert.ok(output.startsWith('hello node developer\n'),
`say1 output starts incorrectly: "${output}"`);
assert.ok(output.includes('> '),
`say1 output does not include prompt: "${output}"`);
inputStream.write('.say2 node developer\n');
assert.ok(output.startsWith('hello from say2\n'),
`say2 output starts incorrectly: "${output}"`);
assert.ok(output.includes('> '),
`say2 output does not include prompt: "${output}"`);