Isolation is not working

[acsvln]

I have no idea why isolation is not working in my project.
I have two files:
Test file:

// process.env.NODE_ENV = 'test';

const HttpStatusCode = require('http-statuscode');
const chai = require('chai');
const chaiHttp = require('chai-http');
const rewiremock = require('rewiremock').default

const should = chai.should();

chai.use(chaiHttp);

const db_mock = require('./mock/db_mock');

rewiremock('../lib/db')
    .with(db_mock);

rewiremock.enable();
rewiremock.isolation();
rewiremock.passBy(/node_modules/);

const app = require('../src/app');
// const route = require('../src/route/index');

rewiremock.withoutIsolation();
rewiremock.disable();

App file:

const express = require('express');
const path = require('path');

const app = express();

const db = require("./lib/db");
const test = require("./route/test");
const api = require("./route/api");
const www = require("./route");

// TODO: use here express.static when we would have lots of files
app.get('/static/item_db.css', function (req, res) {
  res.sendFile(path.resolve(__dirname, "./public/item_db.css"));
});

app.use('/', www);
app.use('/api', api);

db.refresh();

test()

module.exports = app;

As we can see test route is NOT mocked, but isolation does not care about this.

[theKashey]

Should work. Is it actually mocking properly?

[acsvln]

yes, mock in const db_mock = require('./mock/db_mock'); works well

[theKashey]

Try

 rewiremock.isolation({
      noAutoPassBy: true
    });

• meanwhile I am trying to remember why this feature is not documented

[theKashey]

rewiremock.passBy(/node_modules/) was breaking the stuff, as long mocha was a parent of a test, and was while-listed, thus allowing all their "children" to pass.
After PR is being merged, your example should be fine, without any code changes.

[theKashey]

https://github.com/theKashey/rewiremock/tree/3.9.0

[acsvln]

Everything worked, thanks