add in rps calculator

app/controllers/home.rb

@@ -0,0 +1,21 @@
+class Home < Application
+
+  # ...and remember, everything returned from an action
+  # goes to the client...
+  def index
+    render
+  end
+
+  def rps_calc
+    redirect '/' if request.get?
+    if params[:rpd]
+      @rpd = params[:rpd].tr(',','').to_i
+      if @rpd >= 86_400
+        @rps = @rpd / 86_400 # number of seconds in a day
+      else
+        message[:error] = "You need a number greater than 86,400"
+      end
+    end
+    render
+  end
+end

app/helpers/home_helper.rb

@@ -0,0 +1,5 @@
+module Merb
+  module HomeHelper
+
+  end
+end # Merb

app/views/home/_rps.html.haml

@@ -0,0 +1,3 @@
+= form :action => '/home/rps_calc' do
+  %input{:name => 'rpd', :size => 40}
+  =submit 'submit'

app/views/home/index.html.haml

@@ -0,0 +1,3 @@
+Requests per day -> Requests per second:
+
+= partial :rps

app/views/home/rps_calc.html.haml

@@ -0,0 +1,7 @@
+- unless message[:error]
+  = h params[:rpd]
+  Requests per day is
+  = @rps
+  Requests per second
+
+  = partial :rps

spec/requests/home_spec.rb

@@ -0,0 +1,24 @@
+require File.join(File.dirname(__FILE__), '..', 'spec_helper.rb')
+
+describe "/home/rps_calc" do
+
+  it "should return 100 RPS for a input of 8.64 million" do
+    request("/home/rps_calc", :params => {:rpd => 8_640_000}).should contain('100')
+  end
+
+  it "should show an error message if RPD is < 86,400" do
+    request("/home/rps_calc", :params => {:rpd => 86399}).should have_selector('div#error')
+  end
+
+  it "should handle numbers with commas in them" do
+    request("/home/rps_calc", :params => {:rpd => '8,640,000'}).should contain('100')
+  end
+
+  it "should show the RPD and RPS" do
+    request("/home/rps_calc", :params => {:rpd => '8,640,000'}).should contain('8,640,000')
+  end
+
+  it "should redirect to / if request is a GET" do
+    request("/home/rps_calc").should redirect
+  end
+end