Bump to latest machete, bump rspec

Author: Jacques Chester

cf.Gemfile.lock

@@ -1,6 +1,6 @@
 GIT
   remote: git://github.com/cf-buildpacks/machete.git
-  revision: 6bd9bcd2edc98fd638fe8ea8473ac0cdd4b397db
+  revision: 4f2ac6817b928a85fb4126263124a0f1a4aa06d2
   branch: master
   specs:
     machete (0.0.1)
@@ -20,14 +20,14 @@ GEM
       rspec-core (~> 3.0.0)
       rspec-expectations (~> 3.0.0)
       rspec-mocks (~> 3.0.0)
-    rspec-core (3.0.2)
+    rspec-core (3.0.4)
       rspec-support (~> 3.0.0)
-    rspec-expectations (3.0.2)
+    rspec-expectations (3.0.4)
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.0.0)
-    rspec-mocks (3.0.2)
+    rspec-mocks (3.0.4)
       rspec-support (~> 3.0.0)
-    rspec-support (3.0.2)
+    rspec-support (3.0.4)
 
 PLATFORMS
   ruby

cf_spec/integration/deploy_a_node_app_spec.rb

@@ -3,14 +3,18 @@
 
 describe 'CF NodeJS Buildpack' do
   subject(:app) { Machete.deploy_app(app_name) }
+  let(:browser) { Machete::Browser.new(app) }
 
   context 'with cached buildpack dependencies' do
     context 'in an offline environment', if: Machete::BuildpackMode.offline? do
       let(:app_name) { 'node_web_app' }
 
       specify do
         expect(app).to be_running
-        expect(app).to have_page_body('Hello, World!')
+
+        browser.visit_path('/')
+        expect(browser).to have_body('Hello, World!')
+
         expect(app.host).not_to have_internet_traffic
       end
     end
@@ -24,7 +28,9 @@
 
         specify do
           expect(app).to be_running
-          expect(app).to have_page_body('Hello, World!')
+
+          browser.visit_path('/')
+          expect(browser).to have_body('Hello, World!')
         end
       end
 
@@ -34,7 +40,9 @@
         specify do
           expect(Dir.exists?("cf_spec/fixtures/#{app_name}/node_modules")).to eql false
           expect(app).to be_running
-          expect(app).to have_page_body('Hello, World!')
+
+          browser.visit_path('/')
+          expect(browser).to have_body('Hello, World!')
         end
       end
     end