Ruby on Rails Online Test

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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

Hard
10 min
code
Public
Ruby
Closures
Higher Order Function

As part of a data processing pipeline, complete the implementation of the pipeline method:

  • The pipeline method should accept a variable number of functions, and it should return a new function that accepts one parameter arg.
  • The returned function should call the first function in pipeline with the parameter arg, and call the second function with the result of the first function.
  • The returned function should continue calling each function in pipeline in order, following the same pattern, and return the value from the last function.

For example, calling pipeline(-> (x) { x * 3 }, -> (x) { x + 1 }, -> (x) { x / 2 }), and then calling the returned function with 3 should return 5.

Easy
3 min
mca
Public
Ruby on Rails
Database Migrations

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

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24 more premium Ruby on Rails questions

Teacher Route, Document Store, Product Model, Books, Ranges, Shipping, Category Tree, Chain Link, Hobbies, Username, Crop Ratio, String Occurrence, Invoice, Segment, Read Write Execute, Read First Line, Greeter, Language Teacher, Log Patch, Customer Orders, Date Transform, Students, Numbers To Text, Paragraph.

Skills and topics tested

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

For job roles

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

Sample candidate report

What others say

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Simple, straight-forward technical testing

TestDome is simple, provides a reasonable (though not extensive) battery of tests to choose from, and doesn't take the candidate an inordinate amount of time. It also simulates working pressure with the time limits.

Jan Opperman, Grindrod Bank

Product reviews

G2 - Crowd Badge
G2 - High Performer (2022)
Capterra - 4.5 Stars
Capterra - Shortlist (2023)

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