blob: b591f1746b62d4ca3862fefd27e74047b7781690 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
|
'use strict';
// We've experienced a regression where the module loader stats a bunch of
// directories on require() even if it's been called before. The require()
// should caching the request.
const common = require('../common');
const fs = require('fs');
const assert = require('assert');
let counter = 0;
// Switch out the two stat implementations so that they increase a counter
// each time they are called.
const _statSync = fs.statSync;
const _stat = fs.stat;
fs.statSync = function() {
counter++;
return _statSync.apply(this, arguments);
};
fs.stat = function() {
counter++;
return _stat.apply(this, arguments);
};
// Load the module 'a' and 'http' once. It should become cached.
require(common.fixturesDir + '/a');
require('../fixtures/a.js');
require('./../fixtures/a.js');
require('http');
console.log('counterBefore = %d', counter);
const counterBefore = counter;
// Now load the module a bunch of times with equivalent paths.
// stat should not be called.
for (let i = 0; i < 100; i++) {
require(common.fixturesDir + '/a');
require('../fixtures/a.js');
require('./../fixtures/a.js');
}
// Do the same with a built-in module
for (let i = 0; i < 100; i++) {
require('http');
}
console.log('counterAfter = %d', counter);
const counterAfter = counter;
assert.equal(counterBefore, counterAfter);
|
