isPalindrome.rb

gem 'cucumber'

def is_palindrome(str)
  if str.downcase.reverse == str.downcase
    puts('palindrome')
  else
    puts('NOT a palindrome')
  end
end

puts 'Enter a string'
input_str = gets
is_palindrome(input_str.chomp)

test.feature

Feature: lower case palindromes
  This is testing the input of lower case strings
  that may be palindromes

  Scenario: testing lowercase
    Given is_Palindrome is run
    When the input string is "oofoo"
    Then the result should be "palindrome"

test.rb

Given(/^isPalindrome is run$/) do
  @isPalindrome = isPalindrome.new
end

When(/^the input string is "([^"]*)"$/) do |arg1|
  result = isPalindrome.is_palindrome(arg1)
end

Then(/^the result should be "([^"]*)"$/) do |expected_result|
  result == expected_result.chomp
end