Thank you!

With Ruby, MRI 3.0.0, all random tests are failing with the error

./spec/solution_spec.rb:23:in `block (4 levels) in <top (required)>': undefined method `roman' for RSpec::ExampleGroups::RomanNumeralsEncoder::RandomTests:Class (NoMethodError)

All basic tests are passing.

How is the Parked vehicles are NOT moved spec tested?

I'm having trouble figuring how what I'm doing wrong.

Ruby description includes a link that leads to a suspended account error page.

Should replace it with a live link to documentation such as https://ruby-doc.org/core-3.1.2/Enumerable.html#method-i-include-3F

It would be helpful to mention in the Kata description and in the sample tests that "Y" is not a vowel for the purposes of this Kata.

It's frustrating to have random tests fail for reasons that aren't made clear in the description.

All random tests fail with Ruby 3.0.0 with error ./spec/solution_spec.rb:38:in 'random_array': uninitialized constant Set (NameError)

The basic tests pass fine with Ruby 3.0.0

All tests pass fine with Ruby 2.5.0

Might be fixed by placing require 'set' at the top of the test cases.

Nice O(n) solution!

Good deal!

Why use symbols for the keys in the hash and not keep the strings with rockets?