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About the test:

The Ruby on Rails Online Test uses scenario-based MCQs to evaluate candidates' proficiency in creating and managing models, controllers, and views in Rails, working with databases using ActiveRecord, implementing RESTful APIs, and writing efficient and maintainable code using Ruby. Other important topics that are covered in the test include testing and debugging Rails applications, and deploying and scaling Rails applications on cloud platforms.

Covered skills:

  • Ruby Basics
  • Looping with Ruby
  • Blocks and Sorting
  • Object-Oriented Programming
  • Working with Files
  • MVC architecture
  • Routing
  • API integration
  • Control Flow in Ruby
  • Array and Hashes
  • Hashes and Symbols
  • Modules and Mixins
  • Metaprogramming
  • Database integration
  • Authentication

9 reasons why
9 reasons why

Adaface Ruby on Rails Test is the most accurate way to shortlist Ruby on Rails Developers

Reason #1

Tests for on-the-job skills

The Ruby on Rails Online Test helps recruiters and hiring managers identify qualified candidates from a pool of resumes, and helps in taking objective hiring decisions. It reduces the administrative overhead of interviewing too many candidates and saves time by filtering out unqualified candidates at the first step of the hiring process.

The test screens for the following skills that hiring managers look for in candidates:

  • Able to build and deploy Ruby on Rails applications
  • Proficient in Ruby syntax and its various features
  • Skilled in control flow structures in Ruby to handle program logic
  • Capable of using loops effectively for repetitive tasks in Ruby
  • Good understanding of arrays and hashes in Ruby to store and manipulate data
  • Knowledgeable in using blocks and sorting algorithms in Ruby
  • Familiar with hashes and symbols in Ruby for efficient data management
  • Experienced in object-oriented programming principles and concepts
  • Able to work with modules and mixins to enhance code reusability
  • Proficient in working with files in Ruby for reading and writing data
  • Knowledgeable in metaprogramming techniques to dynamically modify code
  • Understanding of the MVC architecture and its implementation in Rails
  • Skilled in integrating databases with Ruby on Rails applications
  • Familiar with routing concepts in Ruby on Rails for handling HTTP requests
  • Knowledgeable in implementing authentication mechanisms in Ruby on Rails
  • Capable of integrating external APIs with Ruby on Rails applications
Reason #2

No trick questions

no trick questions

Traditional assessment tools use trick questions and puzzles for the screening, which creates a lot of frustration among candidates about having to go through irrelevant screening assessments.

View sample questions

The main reason we started Adaface is that traditional pre-employment assessment platforms are not a fair way for companies to evaluate candidates. At Adaface, our mission is to help companies find great candidates by assessing on-the-job skills required for a role.

Why we started Adaface
Reason #3

Non-googleable questions

We have a very high focus on the quality of questions that test for on-the-job skills. Every question is non-googleable and we have a very high bar for the level of subject matter experts we onboard to create these questions. We have crawlers to check if any of the questions are leaked online. If/ when a question gets leaked, we get an alert. We change the question for you & let you know.

How we design questions

These are just a small sample from our library of 10,000+ questions. The actual questions on this Ruby on Rails Test will be non-googleable.

🧐 Question


Movie query problem
Our intern created the following model scope
and they want to use in this view:
Which of these code snippets they use to fetch the correct results, and avoid the N+1 query issue?
🧐 QuestionπŸ”§ Skill


Movie query problem

4 mins

🧐 QuestionπŸ”§ SkillπŸ’ͺ DifficultyβŒ› Time
Movie query problem
Hard4 mins
Reason #4

1200+ customers in 75 countries

customers in 75 countries

With Adaface, we were able to optimise our initial screening process by upwards of 75%, freeing up precious time for both hiring managers and our talent acquisition team alike!

Brandon Lee, Head of People, Love, Bonito

Reason #5

Designed for elimination, not selection

The most important thing while implementing the pre-employment Ruby on Rails Test in your hiring process is that it is an elimination tool, not a selection tool. In other words: you want to use the test to eliminate the candidates who do poorly on the test, not to select the candidates who come out at the top. While they are super valuable, pre-employment tests do not paint the entire picture of a candidate’s abilities, knowledge, and motivations. Multiple easy questions are more predictive of a candidate's ability than fewer hard questions. Harder questions are often "trick" based questions, which do not provide any meaningful signal about the candidate's skillset.

Science behind Adaface tests
Reason #6

1 click candidate invites

Email invites: You can send candidates an email invite to the Ruby on Rails Test from your dashboard by entering their email address.

Public link: You can create a public link for each test that you can share with candidates.

API or integrations: You can invite candidates directly from your ATS by using our pre-built integrations with popular ATS systems or building a custom integration with your in-house ATS.

invite candidates
Reason #7

Detailed scorecards & benchmarks

View sample scorecard
Reason #8

High completion rate

Adaface tests are conversational, low-stress, and take just 25-40 mins to complete.

This is why Adaface has the highest test-completion rate (86%), which is more than 2x better than traditional assessments.

test completion rate
Reason #9

Advanced Proctoring

Learn more

About the Ruby on Rails Assessment Test

Why you should use Pre-employment Ruby on Rails Online Test?

The Ruby on Rails Test makes use of scenario-based questions to test for on-the-job skills as opposed to theoretical knowledge, ensuring that candidates who do well on this screening test have the relavant skills. The questions are designed to covered following on-the-job aspects:

  • Understanding of Ruby Basics
  • Knowledge of Control Flow in Ruby
  • Ability to Loop with Ruby
  • Proficiency in Array and Hashes
  • Familiarity with Blocks and Sorting
  • Understanding of Hashes and Symbols
  • Knowledge of Object-Oriented Programming
  • Proficiency in Modules and Mixins
  • Ability to Work with Files
  • Understanding of Metaprogramming

Once the test is sent to a candidate, the candidate receives a link in email to take the test. For each candidate, you will receive a detailed report with skills breakdown and benchmarks to shortlist the top candidates from your pool.

What topics are covered in the Ruby on Rails Online Test?

  • Ruby Basics

    Ruby Basics covers the fundamental syntax, data types, and operations in Ruby, allowing developers to understand and manipulate the language effectively.

  • Control Flow in Ruby

    Control Flow in Ruby addresses how code execution is controlled through conditionals and loops, enabling developers to make decisions and iterate over data efficiently.

  • Looping with Ruby

    Looping with Ruby entails repeating a block of code multiple times based on a specific condition, enabling developers to automate repetitive tasks and process collections of data.

  • Array and Hashes

    Array and Hashes deal with organizing and managing collections of data in Ruby, providing developers with powerful tools for storing, accessing, and manipulating information efficiently.

  • Blocks and Sorting

    Blocks and Sorting involve using closures to encapsulate blocks of code and applying sorting algorithms to arrange data in a particular order, enhancing the flexibility and functionality of Ruby programs.

  • Hashes and Symbols

    Hashes and Symbols focus on using hash data structures and symbols in Ruby, facilitating efficient key-value pair management and providing a reliable means of accessing data within the language.

  • Object-Oriented Programming

    Object-Oriented Programming (OOP) allows developers to model programs around real-world concepts using classes, objects, and inheritance, promoting code organization, reusability, and modularity.

  • Modules and Mixins

    Modules and Mixins enable developers to modularize and share functionality across different classes in Ruby, facilitating code reuse and promoting a more organized and maintainable codebase.

  • Working with Files

    Working with Files covers file manipulation and file I/O operations in Ruby, equipping developers with the ability to read, write, and control files, enabling interaction with the file system and external data sources.

  • Metaprogramming

    Metaprogramming involves code that writes, modifies, or extends other code at runtime, allowing developers to dynamically create and customize behavior, enhancing the flexibility and power of Ruby applications.

  • MVC Architecture

    MVC Architecture is a software design pattern that separates the application into three interconnected components: Model, View, and Controller, promoting code organization, separation of concerns, and maintainability in Ruby on Rails applications.

  • Database Integration

    Database Integration encompasses the ability to connect, query, and manipulate relational databases within Ruby on Rails applications, enabling developers to store, retrieve, and manage persistent data efficiently within their web applications.

  • Routing

    Routing is the process of defining and mapping URLs to controller actions in a Ruby on Rails application, directing incoming requests to the appropriate handlers and enabling developers to build dynamic and navigable web applications.

  • Authentication

    Authentication deals with user identification and verification in a web application, allowing developers to control access, implement security measures, and ensure that users are authenticated before performing certain actions.

  • API Integration

    API Integration provides the ability to connect and interact with external third-party APIs, allowing developers to consume and integrate data and services from other applications or platforms within their Ruby on Rails applications.

  • Full list of covered topics

    The actual topics of the questions in the final test will depend on your job description and requirements. However, here's a list of topics you can expect the questions for Ruby on Rails Test to be based on.

    Ruby Basics
    Array Methods
    Hash Methods
    Sorting Algorithms
    Object-Oriented Programming
    File I/O
    MVC Architecture
    Database Integration
    Active Record
    RESTful Routing
    Nested Resources
    User Authentication
    Token-based Authentication
    API Integration
    API Requests
    Unit Testing
    Integration Testing
    Error Handling
    Performance Optimization

What roles can I use the Ruby on Rails Online Test for?

  • Ruby on Rails Developer
  • RoR Programmer
  • Ruby on Rails Application Developer

How is the Ruby on Rails Online Test customized for senior candidates?

For intermediate/ experienced candidates, we customize the assessment questions to include advanced topics and increase the difficulty level of the questions. This might include adding questions on topics like

  • Familiarity with MVC Architecture
  • Knowledge of Database Integration
  • Ability to Handle Routing
  • Experience with Authentication
  • Knowledge of API Integration
  • Proficiency in Ruby on Rails Framework
  • Understanding of Web Development Concepts
  • Ability to Design and Implement Databases
  • Familiarity with Front-End Development
  • Knowledge of Testing and Debugging
  • Experience with Performance Optimization

The coding question for experienced candidates will be of a higher difficulty level to evaluate more hands-on experience.

Singapore government logo

The hiring managers felt that through the technical questions that they asked during the panel interviews, they were able to tell which candidates had better scores, and differentiated with those who did not score as well. They are highly satisfied with the quality of candidates shortlisted with the Adaface screening.

reduction in screening time

Ruby on Rails Hiring Test FAQs

Can I combine multiple skills into one custom assessment?

Yes, absolutely. Custom assessments are set up based on your job description, and will include questions on all must-have skills you specify. Here's a quick guide on how you can request a custom test.

Do you have any anti-cheating or proctoring features in place?

We have the following anti-cheating features in place:

  • Non-googleable questions
  • IP proctoring
  • Screen proctoring
  • Web proctoring
  • Webcam proctoring
  • Plagiarism detection
  • Secure browser
  • Copy paste protection

Read more about the proctoring features.

How do I interpret test scores?

The primary thing to keep in mind is that an assessment is an elimination tool, not a selection tool. A skills assessment is optimized to help you eliminate candidates who are not technically qualified for the role, it is not optimized to help you find the best candidate for the role. So the ideal way to use an assessment is to decide a threshold score (typically 55%, we help you benchmark) and invite all candidates who score above the threshold for the next rounds of interview.

What experience level can I use this test for?

Each Adaface assessment is customized to your job description/ ideal candidate persona (our subject matter experts will pick the right questions for your assessment from our library of 10000+ questions). This assessment can be customized for any experience level.

Does every candidate get the same questions?

Yes, it makes it much easier for you to compare candidates. Options for MCQ questions and the order of questions are randomized. We have anti-cheating/ proctoring features in place. In our enterprise plan, we also have the option to create multiple versions of the same assessment with questions of similar difficulty levels.

I'm a candidate. Can I try a practice test?

No. Unfortunately, we do not support practice tests at the moment. However, you can use our sample questions for practice.

What is the cost of using this test?

You can check out our pricing plans.

Can I get a free trial?

Yes, you can sign up for free and preview this test.

I just moved to a paid plan. How can I request a custom assessment?

Here is a quick guide on how to request a custom assessment on Adaface.

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40 min tests.
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