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denoland-deno/cli/tests/node_compat/test/parallel/test-readline-interface.js

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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 16.13.0
// This file is automatically generated by "node/_tools/setup.ts". Do not modify this file manually
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
// Flags: --expose-internals
'use strict';
const common = require('../common');
common.skipIfDumbTerminal();
const assert = require('assert');
const readline = require('readline');
const util = require('util');
const {
getStringWidth,
stripVTControlCharacters
} = require('internal/util/inspect');
const { EventEmitter, getEventListeners } = require('events');
const { Writable, Readable } = require('stream');
class FakeInput extends EventEmitter {
resume() {}
pause() {}
write() {}
end() {}
}
function isWarned(emitter) {
for (const name in emitter) {
const listeners = emitter[name];
if (listeners.warned) return true;
}
return false;
}
function getInterface(options) {
const fi = new FakeInput();
const rli = new readline.Interface({
input: fi,
output: fi,
...options,
});
return [rli, fi];
}
function assertCursorRowsAndCols(rli, rows, cols) {
const cursorPos = rli.getCursorPos();
assert.strictEqual(cursorPos.rows, rows);
assert.strictEqual(cursorPos.cols, cols);
}
{
const input = new FakeInput();
const rl = readline.Interface({ input });
assert(rl instanceof readline.Interface);
}
[
undefined,
50,
0,
100.5,
5000,
].forEach((crlfDelay) => {
const [rli] = getInterface({ crlfDelay });
assert.strictEqual(rli.crlfDelay, Math.max(crlfDelay || 100, 100));
rli.close();
});
{
const input = new FakeInput();
// Constructor throws if completer is not a function or undefined
['not an array', 123, 123n, {}, true, Symbol(), null].forEach((invalid) => {
assert.throws(() => {
readline.createInterface({
input,
completer: invalid
});
}, {
name: 'TypeError',
code: 'ERR_INVALID_ARG_VALUE'
});
});
// Constructor throws if history is not an array
['not an array', 123, 123n, {}, true, Symbol(), null].forEach((history) => {
assert.throws(() => {
readline.createInterface({
input,
history,
});
}, {
name: 'TypeError',
code: 'ERR_INVALID_ARG_TYPE'
});
});
// Constructor throws if historySize is not a positive number
['not a number', -1, NaN, {}, true, Symbol(), null].forEach((historySize) => {
assert.throws(() => {
readline.createInterface({
input,
historySize,
});
}, {
name: 'RangeError',
code: 'ERR_INVALID_ARG_VALUE'
});
});
// Check for invalid tab sizes.
assert.throws(
() => new readline.Interface({
input,
tabSize: 0
}),
{
message: 'The value of "tabSize" is out of range. ' +
'It must be >= 1 && < 4294967296. Received 0',
code: 'ERR_OUT_OF_RANGE'
}
);
assert.throws(
() => new readline.Interface({
input,
tabSize: '4'
}),
{ code: 'ERR_INVALID_ARG_TYPE' }
);
assert.throws(
() => new readline.Interface({
input,
tabSize: 4.5
}),
{
code: 'ERR_OUT_OF_RANGE',
message: 'The value of "tabSize" is out of range. ' +
'It must be an integer. Received 4.5'
}
);
}
// Sending a single character with no newline
{
const fi = new FakeInput();
const rli = new readline.Interface(fi, {});
rli.on('line', common.mustNotCall());
fi.emit('data', 'a');
rli.close();
}
// Sending multiple newlines at once that does not end with a new line and a
// `end` event(last line is). \r should behave like \n when alone.
{
const [rli, fi] = getInterface({ terminal: true });
const expectedLines = ['foo', 'bar', 'baz', 'bat'];
rli.on('line', common.mustCall((line) => {
assert.strictEqual(line, expectedLines.shift());
}, expectedLines.length - 1));
fi.emit('data', expectedLines.join('\r'));
rli.close();
}
// \r at start of input should output blank line
{
const [rli, fi] = getInterface({ terminal: true });
const expectedLines = ['', 'foo' ];
rli.on('line', common.mustCall((line) => {
assert.strictEqual(line, expectedLines.shift());
}, expectedLines.length));
fi.emit('data', '\rfoo\r');
rli.close();
}
// \t does not become part of the input when there is a completer function
{
const completer = (line) => [[], line];
const [rli, fi] = getInterface({ terminal: true, completer });
rli.on('line', common.mustCall((line) => {
assert.strictEqual(line, 'foo');
}));
for (const character of '\tfo\to\t') {
fi.emit('data', character);
}
fi.emit('data', '\n');
rli.close();
}
// \t when there is no completer function should behave like an ordinary
// character
{
const [rli, fi] = getInterface({ terminal: true });
rli.on('line', common.mustCall((line) => {
assert.strictEqual(line, '\t');
}));
fi.emit('data', '\t');
fi.emit('data', '\n');
rli.close();
}
// Adding history lines should emit the history event with
// the history array
{
const [rli, fi] = getInterface({ terminal: true });
const expectedLines = ['foo', 'bar', 'baz', 'bat'];
rli.on('history', common.mustCall((history) => {
const expectedHistory = expectedLines.slice(0, history.length).reverse();
assert.deepStrictEqual(history, expectedHistory);
}, expectedLines.length));
for (const line of expectedLines) {
fi.emit('data', `${line}\n`);
}
rli.close();
}
// Altering the history array in the listener should not alter
// the line being processed
{
const [rli, fi] = getInterface({ terminal: true });
const expectedLine = 'foo';
rli.on('history', common.mustCall((history) => {
assert.strictEqual(history[0], expectedLine);
history.shift();
}));
rli.on('line', common.mustCall((line) => {
assert.strictEqual(line, expectedLine);
assert.strictEqual(rli.history.length, 0);
}));
fi.emit('data', `${expectedLine}\n`);
rli.close();
}
// Duplicate lines are removed from history when
// `options.removeHistoryDuplicates` is `true`
{
const [rli, fi] = getInterface({
terminal: true,
removeHistoryDuplicates: true
});
const expectedLines = ['foo', 'bar', 'baz', 'bar', 'bat', 'bat'];
// ['foo', 'baz', 'bar', bat'];
let callCount = 0;
rli.on('line', (line) => {
assert.strictEqual(line, expectedLines[callCount]);
callCount++;
});
fi.emit('data', `${expectedLines.join('\n')}\n`);
assert.strictEqual(callCount, expectedLines.length);
fi.emit('keypress', '.', { name: 'up' }); // 'bat'
assert.strictEqual(rli.line, expectedLines[--callCount]);
fi.emit('keypress', '.', { name: 'up' }); // 'bar'
assert.notStrictEqual(rli.line, expectedLines[--callCount]);
assert.strictEqual(rli.line, expectedLines[--callCount]);
fi.emit('keypress', '.', { name: 'up' }); // 'baz'
assert.strictEqual(rli.line, expectedLines[--callCount]);
fi.emit('keypress', '.', { name: 'up' }); // 'foo'
assert.notStrictEqual(rli.line, expectedLines[--callCount]);
assert.strictEqual(rli.line, expectedLines[--callCount]);
assert.strictEqual(callCount, 0);
fi.emit('keypress', '.', { name: 'down' }); // 'baz'
assert.strictEqual(rli.line, 'baz');
assert.strictEqual(rli.historyIndex, 2);
fi.emit('keypress', '.', { name: 'n', ctrl: true }); // 'bar'
assert.strictEqual(rli.line, 'bar');
assert.strictEqual(rli.historyIndex, 1);
fi.emit('keypress', '.', { name: 'n', ctrl: true });
assert.strictEqual(rli.line, 'bat');
assert.strictEqual(rli.historyIndex, 0);
// Activate the substring history search.
fi.emit('keypress', '.', { name: 'down' }); // 'bat'
assert.strictEqual(rli.line, 'bat');
assert.strictEqual(rli.historyIndex, -1);
// Deactivate substring history search.
fi.emit('keypress', '.', { name: 'backspace' }); // 'ba'
assert.strictEqual(rli.historyIndex, -1);
assert.strictEqual(rli.line, 'ba');
// Activate the substring history search.
fi.emit('keypress', '.', { name: 'down' }); // 'ba'
assert.strictEqual(rli.historyIndex, -1);
assert.strictEqual(rli.line, 'ba');
fi.emit('keypress', '.', { name: 'down' }); // 'ba'
assert.strictEqual(rli.historyIndex, -1);
assert.strictEqual(rli.line, 'ba');
fi.emit('keypress', '.', { name: 'up' }); // 'bat'
assert.strictEqual(rli.historyIndex, 0);
assert.strictEqual(rli.line, 'bat');
fi.emit('keypress', '.', { name: 'up' }); // 'bar'
assert.strictEqual(rli.historyIndex, 1);
assert.strictEqual(rli.line, 'bar');
fi.emit('keypress', '.', { name: 'up' }); // 'baz'
assert.strictEqual(rli.historyIndex, 2);
assert.strictEqual(rli.line, 'baz');
fi.emit('keypress', '.', { name: 'up' }); // 'ba'
assert.strictEqual(rli.historyIndex, 4);
assert.strictEqual(rli.line, 'ba');
fi.emit('keypress', '.', { name: 'up' }); // 'ba'
assert.strictEqual(rli.historyIndex, 4);
assert.strictEqual(rli.line, 'ba');
// Deactivate substring history search and reset history index.
fi.emit('keypress', '.', { name: 'right' }); // 'ba'
assert.strictEqual(rli.historyIndex, -1);
assert.strictEqual(rli.line, 'ba');
// Substring history search activated.
fi.emit('keypress', '.', { name: 'up' }); // 'ba'
assert.strictEqual(rli.historyIndex, 0);
assert.strictEqual(rli.line, 'bat');
rli.close();
}
// Duplicate lines are not removed from history when
// `options.removeHistoryDuplicates` is `false`
{
const [rli, fi] = getInterface({
terminal: true,
removeHistoryDuplicates: false
});
const expectedLines = ['foo', 'bar', 'baz', 'bar', 'bat', 'bat'];
let callCount = 0;
rli.on('line', (line) => {
assert.strictEqual(line, expectedLines[callCount]);
callCount++;
});
fi.emit('data', `${expectedLines.join('\n')}\n`);
assert.strictEqual(callCount, expectedLines.length);
fi.emit('keypress', '.', { name: 'up' }); // 'bat'
assert.strictEqual(rli.line, expectedLines[--callCount]);
fi.emit('keypress', '.', { name: 'up' }); // 'bar'
assert.notStrictEqual(rli.line, expectedLines[--callCount]);
assert.strictEqual(rli.line, expectedLines[--callCount]);
fi.emit('keypress', '.', { name: 'up' }); // 'baz'
assert.strictEqual(rli.line, expectedLines[--callCount]);
fi.emit('keypress', '.', { name: 'up' }); // 'bar'
assert.strictEqual(rli.line, expectedLines[--callCount]);
fi.emit('keypress', '.', { name: 'up' }); // 'foo'
assert.strictEqual(rli.line, expectedLines[--callCount]);
assert.strictEqual(callCount, 0);
rli.close();
}
// Regression test for repl freeze, #1968:
// check that nothing fails if 'keypress' event throws.
{
const [rli, fi] = getInterface({ terminal: true });
const keys = [];
const err = new Error('bad thing happened');
fi.on('keypress', (key) => {
keys.push(key);
if (key === 'X') {
throw err;
}
});
assert.throws(
() => fi.emit('data', 'fooX'),
(e) => {
assert.strictEqual(e, err);
return true;
}
);
fi.emit('data', 'bar');
assert.strictEqual(keys.join(''), 'fooXbar');
rli.close();
}
// History is bound
{
const [rli, fi] = getInterface({ terminal: true, historySize: 2 });
const lines = ['line 1', 'line 2', 'line 3'];
fi.emit('data', lines.join('\n') + '\n');
assert.strictEqual(rli.history.length, 2);
assert.strictEqual(rli.history[0], 'line 3');
assert.strictEqual(rli.history[1], 'line 2');
}
// Question
{
const [rli] = getInterface({ terminal: true });
const expectedLines = ['foo'];
rli.question(expectedLines[0], () => rli.close());
assertCursorRowsAndCols(rli, 0, expectedLines[0].length);
rli.close();
}
// Sending a multi-line question
{
const [rli] = getInterface({ terminal: true });
const expectedLines = ['foo', 'bar'];
rli.question(expectedLines.join('\n'), () => rli.close());
assertCursorRowsAndCols(
rli, expectedLines.length - 1, expectedLines.slice(-1)[0].length);
rli.close();
}
{
// Beginning and end of line
const [rli, fi] = getInterface({ terminal: true, prompt: '' });
fi.emit('data', 'the quick brown fox');
fi.emit('keypress', '.', { ctrl: true, name: 'a' });
assertCursorRowsAndCols(rli, 0, 0);
fi.emit('keypress', '.', { ctrl: true, name: 'e' });
assertCursorRowsAndCols(rli, 0, 19);
rli.close();
}
{
// Back and Forward one character
const [rli, fi] = getInterface({ terminal: true, prompt: '' });
fi.emit('data', 'the quick brown fox');
assertCursorRowsAndCols(rli, 0, 19);
// Back one character
fi.emit('keypress', '.', { ctrl: true, name: 'b' });
assertCursorRowsAndCols(rli, 0, 18);
// Back one character
fi.emit('keypress', '.', { ctrl: true, name: 'b' });
assertCursorRowsAndCols(rli, 0, 17);
// Forward one character
fi.emit('keypress', '.', { ctrl: true, name: 'f' });
assertCursorRowsAndCols(rli, 0, 18);
// Forward one character
fi.emit('keypress', '.', { ctrl: true, name: 'f' });
assertCursorRowsAndCols(rli, 0, 19);
rli.close();
}
// Back and Forward one astral character
{
const [rli, fi] = getInterface({ terminal: true, prompt: '' });
fi.emit('data', '💻');
// Move left one character/code point
fi.emit('keypress', '.', { name: 'left' });
assertCursorRowsAndCols(rli, 0, 0);
// Move right one character/code point
fi.emit('keypress', '.', { name: 'right' });
assertCursorRowsAndCols(rli, 0, 2);
rli.on('line', common.mustCall((line) => {
assert.strictEqual(line, '💻');
}));
fi.emit('data', '\n');
rli.close();
}
// Two astral characters left
{
const [rli, fi] = getInterface({ terminal: true, prompt: '' });
fi.emit('data', '💻');
// Move left one character/code point
fi.emit('keypress', '.', { name: 'left' });
assertCursorRowsAndCols(rli, 0, 0);
fi.emit('data', '🐕');
assertCursorRowsAndCols(rli, 0, 2);
rli.on('line', common.mustCall((line) => {
assert.strictEqual(line, '🐕💻');
}));
fi.emit('data', '\n');
rli.close();
}
// Two astral characters right
{
const [rli, fi] = getInterface({ terminal: true, prompt: '' });
fi.emit('data', '💻');
// Move left one character/code point
fi.emit('keypress', '.', { name: 'right' });
assertCursorRowsAndCols(rli, 0, 2);
fi.emit('data', '🐕');
assertCursorRowsAndCols(rli, 0, 4);
rli.on('line', common.mustCall((line) => {
assert.strictEqual(line, '💻🐕');
}));
fi.emit('data', '\n');
rli.close();
}
{
// `wordLeft` and `wordRight`
const [rli, fi] = getInterface({ terminal: true, prompt: '' });
fi.emit('data', 'the quick brown fox');
fi.emit('keypress', '.', { ctrl: true, name: 'left' });
assertCursorRowsAndCols(rli, 0, 16);
fi.emit('keypress', '.', { meta: true, name: 'b' });
assertCursorRowsAndCols(rli, 0, 10);
fi.emit('keypress', '.', { ctrl: true, name: 'right' });
assertCursorRowsAndCols(rli, 0, 16);
fi.emit('keypress', '.', { meta: true, name: 'f' });
assertCursorRowsAndCols(rli, 0, 19);
rli.close();
}
// `deleteWordLeft`
[
{ ctrl: true, name: 'w' },
{ ctrl: true, name: 'backspace' },
{ meta: true, name: 'backspace' },
].forEach((deleteWordLeftKey) => {
let [rli, fi] = getInterface({ terminal: true, prompt: '' });
fi.emit('data', 'the quick brown fox');
fi.emit('keypress', '.', { ctrl: true, name: 'left' });
rli.on('line', common.mustCall((line) => {
assert.strictEqual(line, 'the quick fox');
}));
fi.emit('keypress', '.', deleteWordLeftKey);
fi.emit('data', '\n');
rli.close();
// No effect if pressed at beginning of line
[rli, fi] = getInterface({ terminal: true, prompt: '' });
fi.emit('data', 'the quick brown fox');
fi.emit('keypress', '.', { ctrl: true, name: 'a' });
rli.on('line', common.mustCall((line) => {
assert.strictEqual(line, 'the quick brown fox');
}));
fi.emit('keypress', '.', deleteWordLeftKey);
fi.emit('data', '\n');
rli.close();
});
// `deleteWordRight`
[
{ ctrl: true, name: 'delete' },
{ meta: true, name: 'delete' },
{ meta: true, name: 'd' },
].forEach((deleteWordRightKey) => {
let [rli, fi] = getInterface({ terminal: true, prompt: '' });
fi.emit('data', 'the quick brown fox');
fi.emit('keypress', '.', { ctrl: true, name: 'left' });
fi.emit('keypress', '.', { ctrl: true, name: 'left' });
rli.on('line', common.mustCall((line) => {
assert.strictEqual(line, 'the quick fox');
}));
fi.emit('keypress', '.', deleteWordRightKey);
fi.emit('data', '\n');
rli.close();
// No effect if pressed at end of line
[rli, fi] = getInterface({ terminal: true, prompt: '' });
fi.emit('data', 'the quick brown fox');
rli.on('line', common.mustCall((line) => {
assert.strictEqual(line, 'the quick brown fox');
}));
fi.emit('keypress', '.', deleteWordRightKey);
fi.emit('data', '\n');
rli.close();
});
// deleteLeft
{
const [rli, fi] = getInterface({ terminal: true, prompt: '' });
fi.emit('data', 'the quick brown fox');
assertCursorRowsAndCols(rli, 0, 19);
// Delete left character
fi.emit('keypress', '.', { ctrl: true, name: 'h' });
assertCursorRowsAndCols(rli, 0, 18);
rli.on('line', common.mustCall((line) => {
assert.strictEqual(line, 'the quick brown fo');
}));
fi.emit('data', '\n');
rli.close();
}
// deleteLeft astral character
{
const [rli, fi] = getInterface({ terminal: true, prompt: '' });
fi.emit('data', '💻');
assertCursorRowsAndCols(rli, 0, 2);
// Delete left character
fi.emit('keypress', '.', { ctrl: true, name: 'h' });
assertCursorRowsAndCols(rli, 0, 0);
rli.on('line', common.mustCall((line) => {
assert.strictEqual(line, '');
}));
fi.emit('data', '\n');
rli.close();
}
// deleteRight
{
const [rli, fi] = getInterface({ terminal: true, prompt: '' });
fi.emit('data', 'the quick brown fox');
// Go to the start of the line
fi.emit('keypress', '.', { ctrl: true, name: 'a' });
assertCursorRowsAndCols(rli, 0, 0);
// Delete right character
fi.emit('keypress', '.', { ctrl: true, name: 'd' });
assertCursorRowsAndCols(rli, 0, 0);
rli.on('line', common.mustCall((line) => {
assert.strictEqual(line, 'he quick brown fox');
}));
fi.emit('data', '\n');
rli.close();
}
// deleteRight astral character
{
const [rli, fi] = getInterface({ terminal: true, prompt: '' });
fi.emit('data', '💻');
// Go to the start of the line
fi.emit('keypress', '.', { ctrl: true, name: 'a' });
assertCursorRowsAndCols(rli, 0, 0);
// Delete right character
fi.emit('keypress', '.', { ctrl: true, name: 'd' });
assertCursorRowsAndCols(rli, 0, 0);
rli.on('line', common.mustCall((line) => {
assert.strictEqual(line, '');
}));
fi.emit('data', '\n');
rli.close();
}
// deleteLineLeft
{
const [rli, fi] = getInterface({ terminal: true, prompt: '' });
fi.emit('data', 'the quick brown fox');
assertCursorRowsAndCols(rli, 0, 19);
// Delete from current to start of line
fi.emit('keypress', '.', { ctrl: true, shift: true, name: 'backspace' });
assertCursorRowsAndCols(rli, 0, 0);
rli.on('line', common.mustCall((line) => {
assert.strictEqual(line, '');
}));
fi.emit('data', '\n');
rli.close();
}
// deleteLineRight
{
const [rli, fi] = getInterface({ terminal: true, prompt: '' });
fi.emit('data', 'the quick brown fox');
// Go to the start of the line
fi.emit('keypress', '.', { ctrl: true, name: 'a' });
assertCursorRowsAndCols(rli, 0, 0);
// Delete from current to end of line
fi.emit('keypress', '.', { ctrl: true, shift: true, name: 'delete' });
assertCursorRowsAndCols(rli, 0, 0);
rli.on('line', common.mustCall((line) => {
assert.strictEqual(line, '');
}));
fi.emit('data', '\n');
rli.close();
}
// Close readline interface
{
const [rli, fi] = getInterface({ terminal: true, prompt: '' });
fi.emit('keypress', '.', { ctrl: true, name: 'c' });
assert(rli.closed);
}
// Multi-line input cursor position
{
const [rli, fi] = getInterface({ terminal: true, prompt: '' });
fi.columns = 10;
fi.emit('data', 'multi-line text');
assertCursorRowsAndCols(rli, 1, 5);
rli.close();
}
// Multi-line input cursor position and long tabs
{
const [rli, fi] = getInterface({ tabSize: 16, terminal: true, prompt: '' });
fi.columns = 10;
fi.emit('data', 'multi-line\ttext \t');
assert.strictEqual(rli.cursor, 17);
assertCursorRowsAndCols(rli, 3, 2);
rli.close();
}
// Check for the default tab size.
{
const [rli, fi] = getInterface({ terminal: true, prompt: '' });
fi.emit('data', 'the quick\tbrown\tfox');
assert.strictEqual(rli.cursor, 19);
// The first tab is 7 spaces long, the second one 3 spaces.
assertCursorRowsAndCols(rli, 0, 27);
}
// Multi-line prompt cursor position
{
const [rli, fi] = getInterface({
terminal: true,
prompt: '\nfilledline\nwraping text\n> '
});
fi.columns = 10;
fi.emit('data', 't');
assertCursorRowsAndCols(rli, 4, 3);
rli.close();
}
// Clear the whole screen
{
const [rli, fi] = getInterface({ terminal: true, prompt: '' });
const lines = ['line 1', 'line 2', 'line 3'];
fi.emit('data', lines.join('\n'));
fi.emit('keypress', '.', { ctrl: true, name: 'l' });
assertCursorRowsAndCols(rli, 0, 6);
rli.on('line', common.mustCall((line) => {
assert.strictEqual(line, 'line 3');
}));
fi.emit('data', '\n');
rli.close();
}
// Wide characters should be treated as two columns.
assert.strictEqual(getStringWidth('a'), 1);
assert.strictEqual(getStringWidth('あ'), 2);
assert.strictEqual(getStringWidth('谢'), 2);
assert.strictEqual(getStringWidth('고'), 2);
assert.strictEqual(getStringWidth(String.fromCodePoint(0x1f251)), 2);
assert.strictEqual(getStringWidth('abcde'), 5);
assert.strictEqual(getStringWidth('古池や'), 6);
assert.strictEqual(getStringWidth('ノード.js'), 9);
assert.strictEqual(getStringWidth('你好'), 4);
assert.strictEqual(getStringWidth('안녕하세요'), 10);
assert.strictEqual(getStringWidth('A\ud83c\ude00BC'), 5);
assert.strictEqual(getStringWidth('👨‍👩‍👦‍👦'), 8);
assert.strictEqual(getStringWidth('🐕𐐷あ💻😀'), 9);
// TODO(BridgeAR): This should have a width of 4.
assert.strictEqual(getStringWidth('⓬⓪'), 2);
assert.strictEqual(getStringWidth('\u0301\u200D\u200E'), 0);
// Check if vt control chars are stripped
assert.strictEqual(stripVTControlCharacters('\u001b[31m> \u001b[39m'), '> ');
assert.strictEqual(
stripVTControlCharacters('\u001b[31m> \u001b[39m> '),
'> > '
);
assert.strictEqual(stripVTControlCharacters('\u001b[31m\u001b[39m'), '');
assert.strictEqual(stripVTControlCharacters('> '), '> ');
assert.strictEqual(getStringWidth('\u001b[31m> \u001b[39m'), 2);
assert.strictEqual(getStringWidth('\u001b[31m> \u001b[39m> '), 4);
assert.strictEqual(getStringWidth('\u001b[31m\u001b[39m'), 0);
assert.strictEqual(getStringWidth('> '), 2);
// FIXME(bartlomieju): this causes hang
// Check EventEmitter memory leak
// for (let i = 0; i < 12; i++) {
// const rl = readline.createInterface({
// input: process.stdin,
// output: process.stdout
// });
// rl.close();
// assert.strictEqual(isWarned(process.stdin._events), false);
// assert.strictEqual(isWarned(process.stdout._events), false);
// }
[true, false].forEach((terminal) => {
// Disable history
{
const [rli, fi] = getInterface({ terminal, historySize: 0 });
assert.strictEqual(rli.historySize, 0);
fi.emit('data', 'asdf\n');
assert.deepStrictEqual(rli.history, []);
rli.close();
}
// Default history size 30
{
const [rli, fi] = getInterface({ terminal });
assert.strictEqual(rli.historySize, 30);
fi.emit('data', 'asdf\n');
assert.deepStrictEqual(rli.history, terminal ? ['asdf'] : []);
rli.close();
}
// Sending a full line
{
const [rli, fi] = getInterface({ terminal });
rli.on('line', common.mustCall((line) => {
assert.strictEqual(line, 'asdf');
}));
fi.emit('data', 'asdf\n');
}
// Sending a blank line
{
const [rli, fi] = getInterface({ terminal });
rli.on('line', common.mustCall((line) => {
assert.strictEqual(line, '');
}));
fi.emit('data', '\n');
}
// Sending a single character with no newline and then a newline
{
const [rli, fi] = getInterface({ terminal });
let called = false;
rli.on('line', (line) => {
called = true;
assert.strictEqual(line, 'a');
});
fi.emit('data', 'a');
assert.ok(!called);
fi.emit('data', '\n');
assert.ok(called);
rli.close();
}
// Sending multiple newlines at once
{
const [rli, fi] = getInterface({ terminal });
const expectedLines = ['foo', 'bar', 'baz'];
rli.on('line', common.mustCall((line) => {
assert.strictEqual(line, expectedLines.shift());
}, expectedLines.length));
fi.emit('data', `${expectedLines.join('\n')}\n`);
rli.close();
}
// Sending multiple newlines at once that does not end with a new line
{
const [rli, fi] = getInterface({ terminal });
const expectedLines = ['foo', 'bar', 'baz', 'bat'];
rli.on('line', common.mustCall((line) => {
assert.strictEqual(line, expectedLines.shift());
}, expectedLines.length - 1));
fi.emit('data', expectedLines.join('\n'));
rli.close();
}
// Sending multiple newlines at once that does not end with a new(empty)
// line and a `end` event
{
const [rli, fi] = getInterface({ terminal });
const expectedLines = ['foo', 'bar', 'baz', ''];
rli.on('line', common.mustCall((line) => {
assert.strictEqual(line, expectedLines.shift());
}, expectedLines.length - 1));
rli.on('close', common.mustCall());
fi.emit('data', expectedLines.join('\n'));
fi.emit('end');
rli.close();
}
// Sending a multi-byte utf8 char over multiple writes
{
const buf = Buffer.from('☮', 'utf8');
const [rli, fi] = getInterface({ terminal });
let callCount = 0;
rli.on('line', (line) => {
callCount++;
assert.strictEqual(line, buf.toString('utf8'));
});
for (const i of buf) {
fi.emit('data', Buffer.from([i]));
}
assert.strictEqual(callCount, 0);
fi.emit('data', '\n');
assert.strictEqual(callCount, 1);
rli.close();
}
// Calling readline without `new`
{
const [rli, fi] = getInterface({ terminal });
rli.on('line', common.mustCall((line) => {
assert.strictEqual(line, 'asdf');
}));
fi.emit('data', 'asdf\n');
rli.close();
}
// Calling the question callback
{
const [rli] = getInterface({ terminal });
rli.question('foo?', common.mustCall((answer) => {
assert.strictEqual(answer, 'bar');
}));
rli.write('bar\n');
rli.close();
}
// Calling the question multiple times
{
const [rli] = getInterface({ terminal });
rli.question('foo?', common.mustCall((answer) => {
assert.strictEqual(answer, 'baz');
}));
rli.question('bar?', common.mustNotCall(() => {
}));
rli.write('baz\n');
rli.close();
}
// Calling the promisified question
{
const [rli] = getInterface({ terminal });
const question = util.promisify(rli.question).bind(rli);
question('foo?')
.then(common.mustCall((answer) => {
assert.strictEqual(answer, 'bar');
}));
rli.write('bar\n');
rli.close();
}
// Aborting a question
{
const ac = new AbortController();
const signal = ac.signal;
const [rli] = getInterface({ terminal });
rli.on('line', common.mustCall((line) => {
assert.strictEqual(line, 'bar');
}));
rli.question('hello?', { signal }, common.mustNotCall());
ac.abort();
rli.write('bar\n');
rli.close();
}
// Aborting a promisified question
{
const ac = new AbortController();
const signal = ac.signal;
const [rli] = getInterface({ terminal });
const question = util.promisify(rli.question).bind(rli);
rli.on('line', common.mustCall((line) => {
assert.strictEqual(line, 'bar');
}));
question('hello?', { signal })
.then(common.mustNotCall())
.catch(common.mustCall((error) => {
assert.strictEqual(error.name, 'AbortError');
}));
ac.abort();
rli.write('bar\n');
rli.close();
}
// pre-aborted signal
{
const signal = AbortSignal.abort();
const [rli] = getInterface({ terminal });
rli.pause();
rli.on('resume', common.mustNotCall());
rli.question('hello?', { signal }, common.mustNotCall());
rli.close();
}
// pre-aborted signal promisified question
{
const signal = AbortSignal.abort();
const [rli] = getInterface({ terminal });
const question = util.promisify(rli.question).bind(rli);
rli.on('resume', common.mustNotCall());
rli.pause();
question('hello?', { signal })
.then(common.mustNotCall())
.catch(common.mustCall((error) => {
assert.strictEqual(error.name, 'AbortError');
}));
rli.close();
}
// Can create a new readline Interface with a null output argument
{
const [rli, fi] = getInterface({ output: null, terminal });
rli.on('line', common.mustCall((line) => {
assert.strictEqual(line, 'asdf');
}));
fi.emit('data', 'asdf\n');
rli.setPrompt('ddd> ');
rli.prompt();
rli.write("really shouldn't be seeing this");
rli.question('What do you think of node.js? ', (answer) => {
console.log('Thank you for your valuable feedback:', answer);
rli.close();
});
}
// Calling the getPrompt method
{
const expectedPrompts = ['$ ', '> '];
const [rli] = getInterface({ terminal });
for (const prompt of expectedPrompts) {
rli.setPrompt(prompt);
assert.strictEqual(rli.getPrompt(), prompt);
}
}
{
const expected = terminal ?
['\u001b[1G', '\u001b[0J', '$ ', '\u001b[3G'] :
['$ '];
const output = new Writable({
write: common.mustCall((chunk, enc, cb) => {
assert.strictEqual(chunk.toString(), expected.shift());
cb();
rl.close();
}, expected.length)
});
const rl = readline.createInterface({
input: new Readable({ read: common.mustCall() }),
output,
prompt: '$ ',
terminal
});
rl.prompt();
assert.strictEqual(rl.getPrompt(), '$ ');
}
{
const fi = new FakeInput();
assert.deepStrictEqual(fi.listeners(terminal ? 'keypress' : 'data'), []);
}
// Emit two line events when the delay
// between \r and \n exceeds crlfDelay
{
const crlfDelay = 200;
const [rli, fi] = getInterface({ terminal, crlfDelay });
let callCount = 0;
rli.on('line', () => {
callCount++;
});
fi.emit('data', '\r');
setTimeout(common.mustCall(() => {
fi.emit('data', '\n');
assert.strictEqual(callCount, 2);
rli.close();
}), crlfDelay + 10);
}
// For the purposes of the following tests, we do not care about the exact
// value of crlfDelay, only that the behaviour conforms to what's expected.
// Setting it to Infinity allows the test to succeed even under extreme
// CPU stress.
const crlfDelay = Infinity;
// Set crlfDelay to `Infinity` is allowed
{
const delay = 200;
const [rli, fi] = getInterface({ terminal, crlfDelay });
let callCount = 0;
rli.on('line', () => {
callCount++;
});
fi.emit('data', '\r');
setTimeout(common.mustCall(() => {
fi.emit('data', '\n');
assert.strictEqual(callCount, 1);
rli.close();
}), delay);
}
// Sending multiple newlines at once that does not end with a new line
// and a `end` event(last line is)
// \r\n should emit one line event, not two
{
const [rli, fi] = getInterface({ terminal, crlfDelay });
const expectedLines = ['foo', 'bar', 'baz', 'bat'];
rli.on('line', common.mustCall((line) => {
assert.strictEqual(line, expectedLines.shift());
}, expectedLines.length - 1));
fi.emit('data', expectedLines.join('\r\n'));
rli.close();
}
// \r\n should emit one line event when split across multiple writes.
{
const [rli, fi] = getInterface({ terminal, crlfDelay });
const expectedLines = ['foo', 'bar', 'baz', 'bat'];
let callCount = 0;
rli.on('line', common.mustCall((line) => {
assert.strictEqual(line, expectedLines[callCount]);
callCount++;
}, expectedLines.length));
expectedLines.forEach((line) => {
fi.emit('data', `${line}\r`);
fi.emit('data', '\n');
});
rli.close();
}
// Emit one line event when the delay between \r and \n is
// over the default crlfDelay but within the setting value.
{
const delay = 125;
const [rli, fi] = getInterface({ terminal, crlfDelay });
let callCount = 0;
rli.on('line', () => callCount++);
fi.emit('data', '\r');
setTimeout(common.mustCall(() => {
fi.emit('data', '\n');
assert.strictEqual(callCount, 1);
rli.close();
}), delay);
}
});
// Ensure that the _wordLeft method works even for large input
{
const input = new Readable({
read() {
this.push('\x1B[1;5D'); // CTRL + Left
this.push(null);
},
});
const output = new Writable({
write: common.mustCall((data, encoding, cb) => {
assert.strictEqual(rl.cursor, rl.line.length - 1);
cb();
}),
});
const rl = new readline.createInterface({
input,
output,
terminal: true,
});
rl.line = `a${' '.repeat(1e6)}a`;
rl.cursor = rl.line.length;
}
// FIXME(bartlomieju): these tests depend on "event_target" module
// {
// const fi = new FakeInput();
// const signal = AbortSignal.abort();
// const rl = readline.createInterface({
// input: fi,
// output: fi,
// signal,
// });
// rl.on('close', common.mustCall());
// assert.strictEqual(getEventListeners(signal, 'abort').length, 0);
// }
// {
// const fi = new FakeInput();
// const ac = new AbortController();
// const { signal } = ac;
// const rl = readline.createInterface({
// input: fi,
// output: fi,
// signal,
// });
// assert.strictEqual(getEventListeners(signal, 'abort').length, 1);
// rl.on('close', common.mustCall());
// ac.abort();
// assert.strictEqual(getEventListeners(signal, 'abort').length, 0);
// }
// {
// const fi = new FakeInput();
// const ac = new AbortController();
// const { signal } = ac;
// const rl = readline.createInterface({
// input: fi,
// output: fi,
// signal,
// });
// assert.strictEqual(getEventListeners(signal, 'abort').length, 1);
// rl.close();
// assert.strictEqual(getEventListeners(signal, 'abort').length, 0);
// }
{
// Constructor throws if signal is not an abort signal
assert.throws(() => {
readline.createInterface({
input: new FakeInput(),
signal: {},
});
}, {
name: 'TypeError',
code: 'ERR_INVALID_ARG_TYPE'
});
}