import * as io from 'socket.io-client';
import Bluebird from 'bluebird';
import express from 'express';
import socketIo from 'socket.io';
import http from 'http';

import data from './socket.io.json';

describe('Socket.io', () => {
  it('200 thousand requests', async () => {
    const limit = 200 * 1000;

    //  add configurations for this test Edit Configurations -> Node options -> --expose-gc (WebStorm)
    setInterval(() => {
      global.gc();
      console.error(new Date(), process.memoryUsage());
    }, 1000);

    // Server
    const app = express();
    const server = http.createServer(app);
    server.listen(20017, 'localhost');

    const ioMain = socketIo.listen(server);

    ioMain.sockets.on('connection', (socket) => {
      socket.on('some_route', async (args) => {
        return;
      });
    });

    // Client
    const socket = io.connect('ws://localhost:20017', {
      transports: ['websocket'],
      rejectUnauthorized: false,
      query: {key: 'key'}
    });

    await Bluebird.delay(3 * 1000);

    for (let i = 0; i < limit; i++) {
      socket.emit('some_route', ['some_data', 7777, data]);
    }

    await Bluebird.delay(3 * 1000);
  });
});

2019-08-15T07:57:26.345Z { rss: 101449728,
  heapTotal: 69914624,
  heapUsed: 28566952,
  external: 31683 }
2019-08-15T07:57:27.345Z { rss: 91463680,
  heapTotal: 69914624,
  heapUsed: 27574720,
  external: 20968 }
2019-08-15T07:57:28.349Z { rss: 91475968,
  heapTotal: 69914624,
  heapUsed: 26643376,
  external: 20968 }
2019-08-15T07:57:34.580Z { rss: 1773096960,
  heapTotal: 921309184,
  heapUsed: 866143944,
  external: 819505496 }

FATAL ERROR: Ineffective mark-compacts near heap limit Allocation failed - JavaScript heap out of memory

<--- Last few GCs --->

[5377:0x102802800]    13083 ms: Scavenge 1396.7 (1424.6) -> 1396.2 (1425.1) MB, 2.0 / 0.0 ms  (average mu = 0.155, current mu = 0.069) allocation failure 
[5377:0x102802800]    13257 ms: Mark-sweep 1396.9 (1425.1) -> 1396.4 (1425.1) MB, 173.1 / 0.0 ms  (average mu = 0.093, current mu = 0.028) allocation failure scavenge might not succeed


<--- JS stacktrace --->

==== JS stack trace =========================================

    0: ExitFrame [pc: 0x3b4c160dbe3d]
Security context: 0x167f40a1e6e9 <JSObject>
    1: hasBinary [0x167f40c16b71] [/Users/denis/api/node_modules/has-binary2/index.js:~30] [pc=0x3b4c1617e245](this=0x167fb3f9ad81 <JSGlobal Object>,obj=0x167f2e2dd279 <Object map = 0x167f3307a4f1>)
    2: hasBinary [0x167f40c16b71] [/Users/denis/api/node_modules/has-binary2/index.js:~30] [pc=0x3b4c1617e0fa](this=0...

 1: 0x10003c597 node::Abort() [/usr/local/bin/node]
 2: 0x10003c7a1 node::OnFatalError(char const*, char const*) [/usr/local/bin/node]
 3: 0x1001ad575 v8::internal::V8::FatalProcessOutOfMemory(v8::internal::Isolate*, char const*, bool) [/usr/local/bin/node]
 4: 0x100579242 v8::internal::Heap::FatalProcessOutOfMemory(char const*) [/usr/local/bin/node]
 5: 0x10057bd15 v8::internal::Heap::CheckIneffectiveMarkCompact(unsigned long, double) [/usr/local/bin/node]
 6: 0x100577bbf v8::internal::Heap::PerformGarbageCollection(v8::internal::GarbageCollector, v8::GCCallbackFlags) [/usr/local/bin/node]
 7: 0x100575d94 v8::internal::Heap::CollectGarbage(v8::internal::AllocationSpace, v8::internal::GarbageCollectionReason, v8::GCCallbackFlags) [/usr/local/bin/node]
 8: 0x10058262c v8::internal::Heap::AllocateRawWithLigthRetry(int, v8::internal::AllocationSpace, v8::internal::AllocationAlignment) [/usr/local/bin/node]
 9: 0x1005826af v8::internal::Heap::AllocateRawWithRetryOrFail(int, v8::internal::AllocationSpace, v8::internal::AllocationAlignment) [/usr/local/bin/node]
10: 0x100551ff4 v8::internal::Factory::NewFillerObject(int, bool, v8::internal::AllocationSpace) [/usr/local/bin/node]
11: 0x1007da044 v8::internal::Runtime_AllocateInNewSpace(int, v8::internal::Object**, v8::internal::Isolate*) [/usr/local/bin/node]
12: 0x3b4c160dbe3d 
13: 0x3b4c1617e245 

Process finished with exit code 134 (interrupted by signal 6: SIGABRT)