class RuboCop::Cop::RSpec::VariableName

def on_send(node)
  return unless inside_example_group?(node)
  variable_definition?(node) do |variable|
    return if variable.type?(:dstr, :dsym)
    return if matches_allowed_pattern?(variable.value)
    check_name(node, variable.value, variable.source_range)
  end
end