Add Sms class and respective spec

lib/biju.rb

@@ -1,5 +1,2 @@
-require "biju/version"
-
-module Biju
-  # Your code goes here...
-end
+require 'biju/version'
+require "biju/sms"

lib/biju/sms.rb

@@ -0,0 +1,19 @@
+module Biju
+  class Sms
+    attr_accessor :id, :phone_number, :datetime, :message
+
+    def initialize(params={})
+      params.each do |attr, value|
+        self.public_send("#{attr}=", value)
+      end if params
+    end
+
+    def datetime
+      @datetime.sub(/(\d+)\D+(\d+)\D+(\d+),(\d*\D)(\d*\D)(\d+)(.*)/, '20\1-\2-\3 \4\5\6')
+    end
+
+    def to_s
+      "#{id} - #{phone_number} - #{datetime} - #{message}"
+    end
+  end
+end

spec/biju/sms_spec.rb

@@ -0,0 +1,15 @@
+require_relative '../spec_helper'
+
+describe Biju::Sms do
+  subject { Biju::Sms.new(:id => "1", :phone_number => "144", :datetime => "11/07/28,15:34:08-12", :message => "Some text here")}
+
+  it { subject.id.must_equal "1" }
+
+  it { subject.phone_number.must_equal "144" }
+
+  it { subject.datetime.must_equal "2011-07-28 15:34:08" }
+
+  it { subject.message.must_equal "Some text here" }
+
+  it { subject.to_s.must_equal "1 - 144 - 2011-07-28 15:34:08 - Some text here"}
+end

spec/spec_helper.rb

@@ -0,0 +1,2 @@
+require 'minitest/autorun'
+require "./lib/biju"