expecteds = {
  an_integer: 1,
  a_quoted_string: 'Should not have quotes',
  an_unquoted_string: 'Should not have quotes',
  lowercase_true: true,
  titlecase_true: true,
  titlecase_false: false,
}
tests = expecteds.keys.map do |test_name|
  {
    name: test_name,
    expected: expecteds[test_name],
    attr_via_string: attribute(test_name.to_s, default: "#{test_name}_default"),
    attr_via_symbol: attribute(test_name, default: "#{test_name}_default"),
  }
end

control 'flat' do
  tests.each do |info|
    describe "#{info[:name]} using string key" do
      subject { info[:attr_via_string] }
      it { should eq info[:expected] }
    end
  end
end