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About the test

The (Ruby and) Ruby on Rails online test assesses candidates' knowledge of programming in the Ruby language as well as their knowledge of the Ruby on Rails web application framework.

It's an ideal test for pre-employment screening. A good Ruby developer should not only be able to solve problems using Ruby as the programming language but also be familiar with the concepts behind Ruby and have commonly used Ruby on Rails APIs, which makes Ruby on Rails development quite different from desktop or server-side development.

This online test requires candidates to solve coding problems in Ruby and answer questions about the Ruby on Rails web application framework.

Sample public questions

Implement the unique_names method. When passed two arrays of names, it will return an array containing the names that appear in either or both arrays. The returned array should have no duplicates.

For example, calling unique_names(["Ava", "Emma", "Olivia"], ["Olivia", "Sophia", "Emma"]) should return an array containing Ava, Emma, Olivia, and Sophia in any order.

Ruby
Arrays
Easy
10 min
code
Public

Select all statements that are correct after the following migration has been executed:

class ContactsMigration < ActiveRecord::Migration
  def change
    create_table :contacts do |t|
      t.string :name
      t.integer :telephone_number
      t.text :address, null: false
      t.timestamps
    end
  end
end
Ruby on Rails
Database Migrations
Easy
3 min
mca
Public

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Skills and topics tested

  • Ruby on Rails
  • URL Routing
  • Ruby
  • Bug Fixing
  • Language
  • Database Abstraction
  • Collections
  • Ranges
  • Monkey Patching
  • Arithmetic
  • Strings
  • Exceptions
  • Hash
  • Linked List
  • Arrays
  • Iteration
  • Regex
  • JSON
  • Serialization
  • Sorting
  • Inheritance
  • OOP
  • Integer Division
  • Stream

For job roles

  • Back-End Developer
  • Ruby Developer
  • Ruby on Rails Developer
  • Web Developer

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