Ruby on Rails Online Test

20 questions total, 40 minutes maximum, for mid-level programmers

The Ruby on Rails test is designed to assess the programming skills of prospective candidates before ever inviting them to an interview!

This 20-question quiz was compiled by a team of professional developers and covers a broad spectrum of Ruby on Rails knowledge.

Like all Tests4Geeks coding tests, the Ruby on Rails online test is designed to help you select the most-qualified candidates to interview.

Programming test includes:

Ruby on Rails - 20 Questions

  • Models
  • Views
  • Controllers
  • Routes
  • Active Record
  • Miscellaneous: Performance, Cache, Databases

Sample RoR Test Question

Consider the following Ruby on Rails controller:

Ruby on Rails Sample Question

What will happen when the update action receives the following parameters?

Ruby on Rails Test


1. The user model will not be updated because an unexpected parameter was provided, and the user will be redirected to the edit page.

2. The user model will be updated with all the provided parameters.

3. The user model will be updated with the provided first_name, last_name and email parameters.

The correct answer is 3.

Sample Ruby on Rails Test Report

This sample Ruby on Rails test report shows what employers/recruiters receive via email after a candidate completes one of our coding tests. It includes an overall score and a detailed breakdown by specific knowledge areas, providing a clear view of a candidate's coding skills.

Reports are provided in PDF format, making them easy to read, share and print.

Ruby on Rails Coding Test Report

Download Sample Report

Custom Branding

Do you want the Ruby on Rails coding test to match your own branding?

No problem! Use your company's domain and logo without any mention of Tests4Geeks.

Your applicants will think these programming assessment tests are all yours!


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1. Does every candidate have to answer the same questions?

Yes. Ruby on Rails test consists of the same questions for every candidate.

In order to properly compare candidates, they need to answer questions of the same difficulty level, and different questions always mean different difficulty levels.

However, the order of questions and answers is randomized for each applicant.

2. How should I interpret the exam scores?

First of all, you need to keep in mind one very important thing:

The purpose of this Ruby on Rails online test is not to help you find the best developers.

Its purpose is to help you avoid the worst ones.

For example, you have 5 candidates who get scores of 35, 45, 60, 65, and 80, based on a maximum possible score of 100.

We would recommend you invite the last three (those scoring 60, 65, and 80) to a live interview, not just the one who scored an 80/100.

3. Coding Test vs. Quiz

The test is presented in a multiple-choice, or quiz, format, rather than requiring test takers to write code.

If we used a coding test instead, we would have to check all answers manually, which would obviously be impossible.

4. What skill level is the test for?

The test is primarily created for mid-level developers.

5. What about junior and senior level developers?

The test can also be used to test junior programmers, but you should reduce your acceptance score drastically to compensate.

Likewise, you can use it to test senior Ruby on Rails developers as well, with an increased acceptance score.

Some will argue that it's pointless to judge senior developers based on a test meant for mid-level developers. This is generally true if you're looking for specific skills in a candidate rather than a broad base of expertise.

But at the same time, anyone can claim to be a senior developer on their resume. If you're concerned that candidates might be overstating their knowledge and accomplishments, this Ruby on Rails skills test is a good way to determine which ones can actually deliver what they promise.