node/test/parallel/test-memory-usage.js
Matheus Marchini 86f146a2c0 test: make test-memory-usage predictable
The current test relies on undeterministic behavior from V8 GC, and on
newer versions of V8 this test ocasionally fails because that behavior
changed.  Prevent that from happening using --predictable-gc-schedule.
If this test fails in the future, it should fail consistently instead of
ocasionally, which should help debug.

Ref: https://github.com/nodejs/node-v8/issues/144#issuecomment-597945219
Signed-off-by: Matheus Marchini <mmarchini@netflix.com>

PR-URL: https://github.com/nodejs/node/pull/32239
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Jiawen Geng <technicalcute@gmail.com>
Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com>
2020-03-15 10:40:15 +05:30

47 lines
1.9 KiB
JavaScript

// 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: --predictable-gc-schedule
'use strict';
const common = require('../common');
const assert = require('assert');
const r = process.memoryUsage();
// On IBMi, the rss memory always returns zero
if (!common.isIBMi)
assert.ok(r.rss > 0);
assert.ok(r.heapTotal > 0);
assert.ok(r.heapUsed > 0);
assert.ok(r.external > 0);
assert.strictEqual(typeof r.arrayBuffers, 'number');
if (r.arrayBuffers > 0) {
const size = 10 * 1024 * 1024;
// eslint-disable-next-line no-unused-vars
const ab = new ArrayBuffer(size);
const after = process.memoryUsage();
assert(after.external - r.external >= size,
`${after.external} - ${r.external} >= ${size}`);
assert.strictEqual(after.arrayBuffers - r.arrayBuffers, size,
`${after.arrayBuffers} - ${r.arrayBuffers} === ${size}`);
}