-
Notifications
You must be signed in to change notification settings - Fork 29.8k
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
repl: refactor to avoid unsafe array iteration
PR-URL: #37188 Reviewed-By: Zijian Liu <lxxyxzj@gmail.com> Reviewed-By: Rich Trott <rtrott@gmail.com> Reviewed-By: Darshan Sen <raisinten@gmail.com>
- Loading branch information
1 parent
eb7ec1b
commit c377834
Showing
3 changed files
with
227 additions
and
12 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,215 @@ | ||
| 'use strict'; | ||
|
|
||
| // Flags: --expose-internals | ||
|
|
||
| const common = require('../common'); | ||
| const stream = require('stream'); | ||
| const REPL = require('internal/repl'); | ||
| const assert = require('assert'); | ||
| const fs = require('fs'); | ||
| const path = require('path'); | ||
| const { inspect } = require('util'); | ||
|
|
||
| common.skipIfDumbTerminal(); | ||
|
|
||
| const tmpdir = require('../common/tmpdir'); | ||
| tmpdir.refresh(); | ||
|
|
||
| process.throwDeprecation = true; | ||
|
|
||
| const defaultHistoryPath = path.join(tmpdir.path, '.node_repl_history'); | ||
|
|
||
| // Create an input stream specialized for testing an array of actions | ||
| class ActionStream extends stream.Stream { | ||
| run(data) { | ||
| const _iter = data[Symbol.iterator](); | ||
| const doAction = () => { | ||
| const next = _iter.next(); | ||
| if (next.done) { | ||
| // Close the repl. Note that it must have a clean prompt to do so. | ||
| this.emit('keypress', '', { ctrl: true, name: 'd' }); | ||
| return; | ||
| } | ||
| const action = next.value; | ||
|
|
||
| if (typeof action === 'object') { | ||
| this.emit('keypress', '', action); | ||
| } else { | ||
| this.emit('data', `${action}`); | ||
| } | ||
| setImmediate(doAction); | ||
| }; | ||
| doAction(); | ||
| } | ||
| resume() {} | ||
| pause() {} | ||
| } | ||
| ActionStream.prototype.readable = true; | ||
|
|
||
| // Mock keys | ||
| const ENTER = { name: 'enter' }; | ||
| const UP = { name: 'up' }; | ||
| const DOWN = { name: 'down' }; | ||
| const LEFT = { name: 'left' }; | ||
| const RIGHT = { name: 'right' }; | ||
| const BACKSPACE = { name: 'backspace' }; | ||
| const TABULATION = { name: 'tab' }; | ||
| const WORD_LEFT = { name: 'left', ctrl: true }; | ||
| const WORD_RIGHT = { name: 'right', ctrl: true }; | ||
| const GO_TO_END = { name: 'end' }; | ||
| const SIGINT = { name: 'c', ctrl: true }; | ||
| const ESCAPE = { name: 'escape', meta: true }; | ||
|
|
||
| const prompt = '> '; | ||
|
|
||
| const tests = [ | ||
| { | ||
| env: { NODE_REPL_HISTORY: defaultHistoryPath }, | ||
| test: (function*() { | ||
| // Deleting Array iterator should not break history feature. | ||
| // | ||
| // Using a generator function instead of an object to allow the test to | ||
| // keep iterating even when Array.prototype[Symbol.iterator] has been | ||
| // deleted. | ||
| yield 'const ArrayIteratorPrototype ='; | ||
| yield ' Object.getPrototypeOf(Array.prototype[Symbol.iterator]());'; | ||
| yield ENTER; | ||
| yield 'const {next} = ArrayIteratorPrototype;'; | ||
| yield ENTER; | ||
| yield 'const realArrayIterator = Array.prototype[Symbol.iterator];'; | ||
| yield ENTER; | ||
| yield 'delete Array.prototype[Symbol.iterator];'; | ||
| yield ENTER; | ||
| yield 'delete ArrayIteratorPrototype.next;'; | ||
| yield ENTER; | ||
| yield UP; | ||
| yield UP; | ||
| yield DOWN; | ||
| yield DOWN; | ||
| yield 'fu'; | ||
| yield 'n'; | ||
| yield RIGHT; | ||
| yield BACKSPACE; | ||
| yield LEFT; | ||
| yield LEFT; | ||
| yield 'A'; | ||
| yield BACKSPACE; | ||
| yield GO_TO_END; | ||
| yield BACKSPACE; | ||
| yield WORD_LEFT; | ||
| yield WORD_RIGHT; | ||
| yield ESCAPE; | ||
| yield ENTER; | ||
| yield 'require("./'; | ||
| yield TABULATION; | ||
| yield SIGINT; | ||
| yield 'Array.proto'; | ||
| yield RIGHT; | ||
| yield '.pu'; | ||
| yield ENTER; | ||
| yield 'ArrayIteratorPrototype.next = next;'; | ||
| yield ENTER; | ||
| yield 'Array.prototype[Symbol.iterator] = realArrayIterator;'; | ||
| yield ENTER; | ||
| })(), | ||
| expected: [], | ||
| clean: false | ||
| }, | ||
| ]; | ||
| const numtests = tests.length; | ||
|
|
||
| const runTestWrap = common.mustCall(runTest, numtests); | ||
|
|
||
| function cleanupTmpFile() { | ||
| try { | ||
| // Write over the file, clearing any history | ||
| fs.writeFileSync(defaultHistoryPath, ''); | ||
| } catch (err) { | ||
| if (err.code === 'ENOENT') return true; | ||
| throw err; | ||
| } | ||
| return true; | ||
| } | ||
|
|
||
| function runTest() { | ||
| const opts = tests.shift(); | ||
| if (!opts) return; // All done | ||
|
|
||
| const { expected, skip } = opts; | ||
|
|
||
| // Test unsupported on platform. | ||
| if (skip) { | ||
| setImmediate(runTestWrap, true); | ||
| return; | ||
| } | ||
| const lastChunks = []; | ||
| let i = 0; | ||
|
|
||
| REPL.createInternalRepl(opts.env, { | ||
| input: new ActionStream(), | ||
| output: new stream.Writable({ | ||
| write(chunk, _, next) { | ||
| const output = chunk.toString(); | ||
|
|
||
| if (!opts.showEscapeCodes && | ||
| (output[0] === '\x1B' || /^[\r\n]+$/.test(output))) { | ||
| return next(); | ||
| } | ||
|
|
||
| lastChunks.push(output); | ||
|
|
||
| if (expected.length && !opts.checkTotal) { | ||
| try { | ||
| assert.strictEqual(output, expected[i]); | ||
| } catch (e) { | ||
| console.error(`Failed test # ${numtests - tests.length}`); | ||
| console.error('Last outputs: ' + inspect(lastChunks, { | ||
| breakLength: 5, colors: true | ||
| })); | ||
| throw e; | ||
| } | ||
| // TODO(BridgeAR): Auto close on last chunk! | ||
| i++; | ||
| } | ||
|
|
||
| next(); | ||
| } | ||
| }), | ||
| allowBlockingCompletions: true, | ||
| completer: opts.completer, | ||
| prompt, | ||
| useColors: false, | ||
| preview: opts.preview, | ||
| terminal: true | ||
| }, function(err, repl) { | ||
| if (err) { | ||
| console.error(`Failed test # ${numtests - tests.length}`); | ||
| throw err; | ||
| } | ||
|
|
||
| repl.once('close', () => { | ||
| if (opts.clean) | ||
| cleanupTmpFile(); | ||
|
|
||
| if (opts.checkTotal) { | ||
| assert.deepStrictEqual(lastChunks, expected); | ||
| } else if (expected.length !== i) { | ||
| console.error(tests[numtests - tests.length - 1]); | ||
| throw new Error(`Failed test # ${numtests - tests.length}`); | ||
| } | ||
|
|
||
| setImmediate(runTestWrap, true); | ||
| }); | ||
|
|
||
| if (opts.columns) { | ||
| Object.defineProperty(repl, 'columns', { | ||
| value: opts.columns, | ||
| enumerable: true | ||
| }); | ||
| } | ||
| repl.input.run(opts.test); | ||
| }); | ||
| } | ||
|
|
||
| // run the tests | ||
| runTest(); |