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'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 'import("./';
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();
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