This one depends on a request object (Rack::Request) being present:
```ruby
class AppHelpersSpec < Test::Unit::TestCase
include AppHelpers
include Rack::Test::Methods
def request
Rack::Request.new(Rack::MockRequest.env_for '/', {params: {name: 'hohohoe'}})
end
def test_helper_method
res = some_helper_method # call helper method
assert_equal 'WTF!', res
end
end
```
LOL.