RoR & PostgreSQL & JavaScript Test
30 questions total, 65 minutes maximum, for mid and senior-level programmers
A three-subject screening for full-stack Rails developers: Ruby on Rails, PostgreSQL and JavaScript in one online coding test.
Each area gets 10 questions, enough to assess server code, SQL and browser-side skills without tiring the candidate. The combined report reads at a glance, and the per-subject scores tell you what to focus on at the interview.
Coding test includes:
Ruby on Rails - 10 Questions
- Controllers
- Views
- ActiveRecord
- Miscellaneous: Routes, Models, Cache
PostgreSQL - 10 Questions
- Joins, Queries
- Grouping, Aggregate Functions, HAVING Clause
- Subqueries, EXISTS, IN Operators
- Miscellaneous: Ranking Functions, UNION Operator
JavaScript - 10 Questions
- General JavaScript, JavaScript in Browsers
- JavaScript Objects, Arrays
- Functions and Scope, Passing by Reference vs. by Value
Sample RoR & PostgreSQL & JavaScript Test Report
This sample RoR & PostgreSQL & JavaScript 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.
Custom Branding
Do you want the RoR & PostgreSQL & JavaScript 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!
"They totally blow away the competition as far as a better product value."
Maurice H. on Capterra.com
F.A.Q.
Does every candidate have to answer the same questions?
Yes. The RoR & PostgreSQL & JavaScript 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.
How should I interpret the exam scores?
First of all, you need to keep in mind one very important thing:
The purpose of this RoR & PostgreSQL & JavaScript 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.
What is the format of the test?
We chose a multiple-choice, or quiz, format for two reasons.
- It removes performance anxiety. Many developers freeze when asked to write code under time pressure while being watched. Picking an answer from a list lets them focus on the problem instead of the stress, giving you a more accurate read on their actual knowledge.
- It tests the right skill for the AI era. Today, most code is written with AI assistance. The skill that matters now is judgment: reading unfamiliar code, spotting bugs, and choosing the right approach. Multiple-choice questions built around real code snippets test exactly this.
What skill level is the test for?
The test is primarily created for mid and senior-level developers.
Resumes are easy to inflate, and "senior" means very different things at different companies. This RoR & PostgreSQL & JavaScript skills test is a fast, objective way to find out who can actually deliver what they claim on paper.