Stuck on an issue?

Lightrun Answers was designed to reduce the constant googling that comes with debugging 3rd party libraries. It collects links to all the places you might be looking at while hunting down a tough bug.

And, if you’re still stuck at the end, we’re happy to hop on a call to see how we can help out.

Mock-knex 0.3.3 failed on save and update operations

See original GitHub issue

My unit tests worked fine with Mock-knex 0.3.2. With the last version, I’ve got this error when I want to test some insert or update operations inside a transaction:

On insert:

Unhandled rejection TypeError: Cannot read property 'insertId' of undefined
    at Client.processResponse (C:\Projets\Front\webapp-internet\node_modules\knex\lib\dialects\mysql\index.js:116:21)
    at C:\Projets\Front\webapp-internet\node_modules\knex\lib\runner.js:116:28
    at tryCatcher (C:\Projets\Front\webapp-internet\node_modules\knex\node_modules\bluebird\js\main\util.js:26:23)
    at Promise._settlePromiseFromHandler (C:\Projets\Front\webapp-internet\node_modules\knex\node_modules\bluebird\js\main\promise.js:507:31)
    at Promise._settlePromiseAt (C:\Projets\Front\webapp-internet\node_modules\knex\node_modules\bluebird\js\main\promise.js:581:18)
    at Async._drainQueue (C:\Projets\Front\webapp-internet\node_modules\knex\node_modules\bluebird\js\main\async.js:128:12)
    at Async._drainQueues (C:\Projets\Front\webapp-internet\node_modules\knex\node_modules\bluebird\js\main\async.js:133:10)
    at Immediate.Async.drainQueues [as _onImmediate] (C:\Projets\Front\webapp-internet\node_modules\knex\node_modules\bluebird\js\main\async.js:15:14)
    at processImmediate [as _immediateCallback] (timers.js:367:17)

On update:

Unhandled rejection TypeError: Cannot read property 'affectedRows' of undefined
    at Client.processResponse (C:\Projets\Front\webapp-internet\node_modules\knex\lib\dialects\mysql\index.js:120:20)
    at C:\Projets\Front\webapp-internet\node_modules\knex\lib\runner.js:116:28
    at tryCatcher (C:\Projets\Front\webapp-internet\node_modules\knex\node_modules\bluebird\js\main\util.js:26:23)
    at Promise._settlePromiseFromHandler (C:\Projets\Front\webapp-internet\node_modules\knex\node_modules\bluebird\js\main\promise.js:507:31)
    at Promise._settlePromiseAt (C:\Projets\Front\webapp-internet\node_modules\knex\node_modules\bluebird\js\main\promise.js:581:18)
    at Async._drainQueue (C:\Projets\Front\webapp-internet\node_modules\knex\node_modules\bluebird\js\main\async.js:128:12)
    at Async._drainQueues (C:\Projets\Front\webapp-internet\node_modules\knex\node_modules\bluebird\js\main\async.js:133:10)
    at Immediate.Async.drainQueues [as _onImmediate] (C:\Projets\Front\webapp-internet\node_modules\knex\node_modules\bluebird\js\main\async.js:15:14)
    at processImmediate [as _immediateCallback] (timers.js:367:17)

This is an exemple of code which failed:

bookshelf.transaction(function(t) {
  return Customer.forge(customer)
    .save(null, {
       method: 'insert',
       transacting: t
    }).then(function(insertedCustomer) {                    
        return insertedCustomer.customers().attach(customers, {
           transacting: t
        });
     }).then(function(result) {
          resolve(customer);
     }).catch(function(err) {
           reject(err);
     });
 });

And this is my tracker code:

var customer = [];
var insertedCustomer = {
   id: "TEST",
   name: "TEST"
  };
var customers = ['2', '3', '4'];
tracker.on('query', function sendResult(query) {
  if (query.method === 'select') {
    query.response(customer);
  } else if (query.method === 'insert') {
      if (query.bindings.length === 3) {
         customer.push(insertedCustomer);
         customer[0].customers = [];
       } else {
          customer[0].customers.push(query.bindings[0]);
       }
      query.response(customer);
  } else {
       query.response(customer);
  }
});