Move setup into an activate method.

README.md

@@ -2,3 +2,5 @@
 
 Currently in alpha. Needs complete test coverage, then more functionality can
 be added.
+
+Call FakeBraintree.activate! to make go.

lib/fake_braintree.rb

@@ -8,11 +8,6 @@
 require 'fake_braintree/sinatra_app'
 require 'fake_braintree/version'
 
-Braintree::Configuration.environment = :production
-Braintree::Configuration.merchant_id = "xxx"
-Braintree::Configuration.public_key  = "xxx"
-Braintree::Configuration.private_key = "xxx"
-
 module FakeBraintree
   class << self
     @customers     = {}
@@ -24,6 +19,15 @@ class << self
     attr_accessor :customers, :subscriptions, :failures, :transaction, :decline_all_cards
   end
 
+  def self.activate!
+    Braintree::Configuration.environment = :production
+    Braintree::Configuration.merchant_id = "xxx"
+    Braintree::Configuration.public_key  = "xxx"
+    Braintree::Configuration.private_key = "xxx"
+    clear!
+    ShamRack.mount(FakeBraintree::SinatraApp, "www.braintreegateway.com", 443)
+  end
+
   def self.clear!
     self.customers         = {}
     self.subscriptions     = {}
@@ -157,5 +161,3 @@ def self.generated_transaction
                             "gateway_rejection_reason"=>nil}
   end
 end
-
-ShamRack.mount(FakeBraintree::SinatraApp, "www.braintreegateway.com", 443)

spec/fake_braintree_spec.rb

@@ -44,6 +44,10 @@
 end
 
 describe "configuration variables" do
+  before do
+    FakeBraintree.activate!
+  end
+
   it "sets the environment configuration" do
     Braintree::Configuration.environment.should == :production
   end

spec/spec_helper.rb

@@ -8,6 +8,7 @@
 File.new('tmp/braintree_log', 'w').close
 
 Braintree::Configuration.logger = Logger.new("tmp/log")
+FakeBraintree.activate!
 
 RSpec.configure do |config|
   config.mock_with :mocha