ruby unit test example

palindrome_test.rb

require 'test/unit'
require 'palindrome'
require 'awesome_print'


class PalindromeTest < Test::Unit::TestCase
  SAS_P = "sas"

  def setup
  end

  def test_p_match
    res = Palindrome.p_match("esase", 1, 3)
    assert(res.eql?("esase"), "Expected esase but was #{res}" )
  end

  def test_p_match_single
    res = Palindrome.p_match("esasf",1, 3)
    assert(res.eql?(SAS_P), "Expected #{SAS_P} but was #{res}" )
  end

  def test_find_all_none
    pal_ary = Palindrome.find_all("etch") 
    assert(pal_ary.size == 0, "Expected 0 but size was " + pal_ary.size.to_s)
  end

  def test_find_all_one_beginning
    pal_ary = Palindrome.find_all("sasit") 
    assert(pal_ary.size == 1, "Expected 1 but size was " + pal_ary.size.to_s)
    assert(pal_ary[0].eql?(SAS_P), "Expected #{SAS_P} but was " + pal_ary[0])
  end

  def test_find_all_one_end
    pal_ary = Palindrome.find_all("zerosas") 
    assert(pal_ary.size == 1, "Expected 1 but size was " + pal_ary.size.to_s)
    assert(pal_ary[0].eql?(SAS_P), "Expected #{SAS_P} but was " + pal_ary[0])
  end

  def test_find_all_one_middle
    pal_ary = Palindrome.find_all("zerosasend") 
    assert(pal_ary.size == 1, "Expected 1 but size was " + pal_ary.size.to_s)
    assert(pal_ary[0].eql?(SAS_P), "Expected #{SAS_P} but was " + pal_ary[0])
  end
end