add tests for post_to_url method

spec/spec_helper.rb

@@ -1,5 +1,6 @@
 require 'stripe_tester'
-require "mocha/api"
+require 'mocha/api'
+require 'fakeweb'
 
 RSpec.configure do |config|
   config.order = "random"

spec/stripe_tester_spec.rb

@@ -69,8 +69,33 @@
       expect(StripeTester.webhook_url).to eq(nil)
     end
 
-    it "#post_to_url should send data to url" do
+    it "#post_to_url should return true when request is successful" do
+      data = StripeTester.load_template(:invoice_created)
+      url = "http://localhost:3000/transactions"
+      StripeTester.webhook_url = url
+
+      FakeWeb.register_uri(:post, 
+                           url, 
+                           body: data.to_json, 
+                           content_type: 'application/json')
+
+      response = StripeTester.post_to_url(data)
+
+      expect(response).to be(true)
+    end
+
+    it "#post_to_url should raise an error when request fails" do
+      data = StripeTester.load_template(:invoice_created)
+      url = "http://localhost:3000/"
+      StripeTester.webhook_url = url
+
+      FakeWeb.register_uri(:post, 
+                           url, 
+                           body: data.to_json, 
+                           content_type: 'application/json',
+                           status: ["404", "Not Found"])
 
+      expect{ StripeTester.post_to_url(data) }.to raise_error('404 "Not Found"')
     end
 
     it "#post_to_url should raise an error if webhook URL is not set" do

stripe_tester.gemspec

@@ -23,4 +23,5 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency "rake"
   spec.add_development_dependency "rspec"
   spec.add_development_dependency "mocha"
+  spec.add_development_dependency "fakeweb", "~> 1.3"
 end