Boot a rack server for the fake endpoint instead of using ShamRack

fake_braintree.gemspec

@@ -16,7 +16,7 @@ Gem::Specification.new do |s|
   s.executables   = `git ls-files -- bin/*`.split("\n").map{ |f| File.basename(f) }
   s.require_paths = ["lib"]
 
-  s.add_dependency 'sham_rack'
+  s.add_dependency 'capybara'
   s.add_dependency 'activesupport'
   s.add_dependency 'i18n'
   s.add_dependency 'sinatra'

lib/fake_braintree.rb

@@ -1,6 +1,7 @@
 require 'fileutils'
 require 'braintree'
-require 'sham_rack'
+require 'capybara'
+require 'capybara/server'
 
 require 'fake_braintree/helpers'
 require 'fake_braintree/customer'
@@ -23,12 +24,15 @@ class << self
   end
 
   def self.activate!
-    Braintree::Configuration.environment = :production
+    Braintree::Configuration.environment = :development
     Braintree::Configuration.merchant_id = "xxx"
     Braintree::Configuration.public_key  = "xxx"
     Braintree::Configuration.private_key = "xxx"
     clear!
-    ShamRack.mount(FakeBraintree::SinatraApp, "www.braintreegateway.com", 443)
+    Capybara.server_port = 3000
+    server = Capybara::Server.new(FakeBraintree::SinatraApp)
+    server.boot
+    ENV['GATEWAY_PORT'] = server.port.to_s
   end
 
   def self.log_file_path

spec/fake_braintree_spec.rb

@@ -52,8 +52,8 @@
 describe "configuration variables" do
   subject { Braintree::Configuration }
 
-  it "sets the environment to production" do
-    subject.environment.should == :production
+  it "sets the environment to development" do
+    subject.environment.should == :development
   end
 
   it "sets some fake API credentials" do