Ruby coding tests

Looking to hire a Ruby programmer who knows how to write clean and maintainable code? You’ll need a surefire way to test their understanding of object-oriented programming, metaprogramming, and how well they can leverage Ruby’s flexibility to produce innovative solutions.

TestGorilla offers 12 universal coding tests to assess a candidate's proficiency in over 20 programming languages, including Ruby. These online assessments allow prospective employees to walk the walk so you can confidently hire the best applicant.

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What is a Ruby skills test?

Ruby is a dynamic, object-oriented programming language known for its simplicity and elegance. It’s also an open-source language, which makes sense, given its focus on developer productivity. Ruby’s main uses as a coding language are for scripting, automation, and web development, where the Ruby on Rails framework is often used.

When filling a role requiring Ruby expertise, you must test for skills such as object-oriented principles, metaprogramming, and functional programming paradigms. Since Ruby is often used in automation, you should also use real-world examples of integrating with external APIs.

Ruby skills tests were created to discover which applicants excel in areas such as API integration, debugging, and the implementation of scalable solutions using Ruby on Rails. These tests go beyond a resume or portfolio to learn which candidates have the specific skills you need.

Why use Ruby skills tests?

Access Ruby expertise by offering coding tests that check for core concepts, strong fundamentals, and practical, Ruby-specific challenges like dynamic typing, metaprogramming, and Test-Driven Development (TDD).
Validate candidates' proficiency with Ruby on Rails. This important framework is essential for any developer building projects at scale, so it’s crucial to understand how familiar candidates are with it.
Evaluate real-world problem-solving abilities with tests designed to simulate common and challenging problems. These help you understand each applicant's thought process, enabling you to picture them working under pressure.
Hire more efficiently with Ruby assessments. Tech employers report an 84% reduction in hiring costs when using skills-based tests.
Combat hiring bias with objective Ruby online tests. 41% of tech employees report experiencing bias during recruitment. Ensure you objectively find the best candidate for the job when hiring Ruby developers.

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What roles can you hire for with a Ruby coding test?

Ruby on Rails developer

Rails is the main framework for Ruby, and developers specializing in it must be skilled in database management with Active Record, API integrations, and implementing RESTful web services to create secure and efficient software.

Ruby full-stack developer

A full-stack Ruby developer excels in both front-end and back-end development. They use Ruby on Rails for server-side logic and integrate modern front-end frameworks like React for user interfaces.

Ruby DevOps engineer

Ruby DevOps engineers skilled in metaprogramming leverage Ruby’s scripting capabilities to automate tasks and streamline development. Engineers use tools like Capistrano for deployment and Chef for configuration.

Ruby back-end developer

Ruby back-end developers often use frameworks like Ruby on Rails or Sinatra to focus on server-side programming. Database management, high performance, and secure code are at the top of their priorities.

12 programming skills tested in Ruby and 19 other coding languages

Evaluate 12 essential programming skills with coding challenges and simulated tasks. Let candidates solve problems using Ruby or any of 19 additional programming languages based on their expertise and experience.

Coding: Data Structures - Stacks and Queues

This intermediate-level coding challenge assesses candidates' proficiency in manipulating stacks and queues. You can configure which programming languages will be available for your candidates.

35 min

Details

Coding: Debugging

This intermediate-level coding challenge focuses on candidates’ ability to interpret and debug code, based on a set of requirements, in the programming language of their choice. You can configure which programming languages will be available.

35 min

Details

Coding: Entry-Level Algorithms

This coding test assesses candidates' ability to program a basic algorithm, in the programming language of their choice. You can configure which programming languages will be available for your candidates to choose from.

15 min

Details

Coding: Intermediate-Level Algorithms

This coding test assesses candidates' intermediate-level programming skills, in the programming language of their choice. You can configure which programming languages will be available for your candidates to choose from.

35 min

Details

Coding: Data Structures - Heaps

This intermediate-level coding challenge assesses candidates' proficiency in working with heaps, in the programming language of their choice. You can configure which programming languages will be available for your candidates.

35 min

Details

Coding: Data Structures - Graphs

This intermediate-level coding challenge assesses candidates' proficiency in graph data structures. You can configure which programming languages will be available for your candidates.

35 min

Details

Coding: Data Structures - Binary Search Trees

This intermediate-level coding challenge assesses candidates' proficiency in working with binary search trees, in the programming language of their choice. You can configure which programming languages will be available for your candidates.

35 min

Details

Coding: Data Structures – Binary Trees

This intermediate-level, language-agnostic coding challenge assesses candidates' proficiency in manipulating binary trees, enabling candidates to choose their preferred programming language. Employers can configure supported languages as needed.

35 min

Details

Coding: Data Structures – Linked Lists

This intermediate-level coding test evaluates candidates' ability to manipulate linked lists, in the programming language of their choice. You can configure which programming languages will be available for your candidates.

35 min

Details

Coding: Data Structures - Arrays

This intermediate-level coding test evaluates candidates' ability to manipulate arrays, crucial for code optimization, in the programming language of their choice. You can configure which programming languages will be available for your candidates.

35 min

Details

Coding: Data Structures – Strings

This intermediate-level coding challenge assesses candidates' proficiency in manipulating strings. You can configure which programming languages will be available for your candidates.

35 min

Details

Coding: Data Structures - Hash Tables

This intermediate-level coding challenge assesses candidates' proficiency in working with hash tables, in the programming language of their choice. You can configure which programming languages will be available for your candidates.

35 min

Details

Designed by Ruby experts

At TestGorilla, coding assessments are designed by industry experts, experienced developers, and talented editors to ensure the highest level of applicant testing. Feedback is then incorporated from actual test-takers, which enables continual review and improves the quality of our assessments.

Ravi is a full-stack developer proficient in Node.js, Angular, Laravel, and JavaScript. However, his main passion lies in Ruby and using it with Ruby on Rails. Ravi has built multiple applications for diverse clients and holds a Master of Technology in Software Engineering and Information Architecture.

Over the past eight years, Dominic has used his Computer Science degree and passion for Ruby to build multiple commercial applications. He’s always looking for ways to solve problems and improve his knowledge and skills to make better software.

image of the subject matter expert Maria V. for this test

Maria, a developer and security engineer, focuses on auditing back-end code to ensure it reaches the necessary standard to deal with massive data. Maria is an elite engineer when it comes to analyzing APIs for messy code and can provide top-level solutions to clean any code base.

Image of the subject-matter expert for this test

Jes discovered his love for coding during his time in the Mexican military. Since then, he has been a key asset in delivering security protocols using C before moving on to building smart contracts with Rust. Now, he’s turned his expertise to web development, cybersecurity, and Linux systems management.

Built-in features to support your Ruby assessment

Want to maximize your chances of hiring the Ruby developer for the role? We recommend multi-measure testing.

By pairing your coding test with other relevant tests that evaluate your candidates' soft skills, cognitive abilities, knowledge, and preferences you can ensure you shortlist talent that's ready to contribute from day one.

Our in-depth Ruby coding report offers insights into how each candidate the approach each candidate took to arrive at their answers. The report includes:

🔹 Percentile-based scoring of candidates based on overall correctness (whether given inputs produce the correct output)

🔹 A timeline showing how candidates arrived at their answer, with specific actions such as copy/pastes highlighted for easy reference

🔹 A dynamic solution window, showing the candidates' final code coming together over time

🔹 Candidates' responses and results for each test case as well as the final validation use case

See what it looks like in action

All tasks and scenarios are solved in this integrated development environment (IDE). Once the candidate assesses the problem, they can choose Ruby as their preferred language from the drop-down menu and solve the question.

Get started with your Ruby coding test

Ready to start testing for Ruby skills? Screen developers in three easy steps.

1. Create your assessment

Choose an existing universal coding test or create your own custom challenge. Select from up to 20 languages to include in your test including Ruby, Python, and JavaScript.

2. Invite candidates your way

Connect with candidates by sending email invites directly from TestGorilla, straight from your ATS, or by sharing a direct link.

Illustration representing employees liking skills-based hiring

3. Analyze and shortlist top coders

Evaluate candidates’ Ruby and coding skills, plus soft skills. Use our dashboard and reports to identify top performers.

Ruby coding tests FAQs

A skilled Ruby programmer will be proficient in the language and have a deep understanding of frameworks like Ruby on Rails. They will be confident with MVC, Active Record, and RESTful APIs. They can leverage Ruby’s metaprogramming, use Test-Driven Deployment, and debug to ensure clean code. Beyond technical abilities, they will be problem-solvers who communicate well in a team, which is essential when hiring a Ruby developer.