node/test/async-hooks/test-filehandle-no-reuse.js

'use strict';

const common = require('../common');
const initHooks = require('./init-hooks');
const { checkInvocations } = require('./hook-checks');
const fixtures = require('../common/fixtures');
if (!common.hasCrypto)
  common.skip('missing crypto');
const http2 = require('http2');
const assert = require('assert');
const fs = require('fs');

// Checks that the async resource is not reused by FileHandle.
// Test is based on parallel\test-http2-respond-file-fd.js.

const hooks = initHooks();
hooks.enable();

const {
  HTTP2_HEADER_CONTENT_TYPE,
} = http2.constants;

// Use large fixture to get several file operations.
const fname = fixtures.path('person-large.jpg');
const fd = fs.openSync(fname, 'r');

const server = http2.createServer();
server.on('stream', (stream) => {
  stream.respondWithFD(fd, {
    [HTTP2_HEADER_CONTENT_TYPE]: 'text/plain',
  });
});
server.on('close', common.mustCall(() => fs.closeSync(fd)));
server.listen(0, () => {
  const client = http2.connect(`http://localhost:${server.address().port}`);
  const req = client.request();

  req.on('response', common.mustCall());
  req.on('data', () => {});
  req.on('end', common.mustCall(() => {
    client.close();
    server.close();
  }));
  req.end();
});

process.on('exit', onExit);

function onExit() {
  hooks.disable();
  hooks.sanityCheck();
  const activities = hooks.activities;

  // Verify both invocations
  const fsReqs = activities.filter((x) => x.type === 'FSREQCALLBACK');
  assert.ok(fsReqs.length >= 2);

  checkInvocations(fsReqs[0], { init: 1, destroy: 1 }, 'when process exits');
  checkInvocations(fsReqs[1], { init: 1, destroy: 1 }, 'when process exits');

  // Verify reuse handle has been wrapped
  assert.ok(fsReqs[0].handle !== fsReqs[1].handle, 'Resource reused');
  assert.ok(fsReqs[0].handle === fsReqs[1].handle.handle,
            'Resource not wrapped correctly');
}