```ruby
require_relative '../spec_helper'

describe 'Home routing' do
  it 'routes /en to the home controller' do
    expect(get('/en')).to route_to(controller: "home", action: "show", locale: "en")
  end
end
```

Add Welsh test case to home routing spec
user
```ruby
require_relative '../spec_helper'

describe 'Home routing' do
  it 'routes /en to the home controller' do
    expect(get('/en')).to route_to(controller: "home", action: "show", locale: "en")
  end
  
  it 'routes /cy to the home controller' do
    expect(get('/cy')).to route_to(controller: "home", action: "show", locale: "cy")
  end
end
```
assistant