Ruby Online Test

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About the test

The Ruby online test assesses knowledge of programming in the Ruby language. This test requires solving live coding problems in Ruby.

The assessment includes work-sample tasks such as:

  • Serializing to/from JSON to handle web requests.
  • Finding and fixing bugs, and handling exceptions.
  • Extracting data from text using Regex.

A good Ruby developer needs a solid understanding of the Ruby programming language and knowledge of its data structures and language constructs to write robust and maintainable code.

Sample public questions

Easy
10 min
code
Public
Ruby
Arrays

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.

Easy
10 min
code
Public
Ruby
Arithmetic

Implement the function find_roots to find the roots of the quadratic equation: ax2 + bx + c = 0. The function should return an array containing both roots in any order. If the equation has only one solution, the function should return that solution as both elements of the array. The equation will always have at least one solution.

The roots of the quadratic equation can be found with the following formula: A quadratic equation.

For example, find_roots(2, 10, 8) should return [-1, -4] or [-4, -1] as the roots of the equation 2x2 + 10x + 8 = 0 are -1 and -4.

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19 more premium Ruby questions

Document Store, Ranges, Shipping, Category Tree, Chain Link, Hobbies, Paragraph, Products, Username, Crop Ratio, String Occurrence, Segment, Read Write Execute, Read First Line, Date Transform, Greeter, Numbers To Text, Language Teacher, Log Patch.

Skills and topics tested

  • Ruby
  • Bug Fixing
  • Language
  • Ranges
  • Arithmetic
  • Exceptions
  • Hash
  • Linked List
  • Arrays
  • Iteration
  • Regex
  • Strings
  • JSON
  • Serialization
  • Sorting
  • Integer Division
  • Stream
  • Inheritance
  • OOP
  • Monkey Patching

For job roles

  • Back-End Developer
  • Ruby Developer
  • Web Developer

Sample candidate report

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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.

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