Set Capybara.app at spec run time, not at definition time

This bug got triggered on Travis.

spec/dsl_spec.rb

@@ -1,9 +1,7 @@
 require 'spec_helper'
-
 require 'capybara/dsl'
 
 describe Capybara::DSL do
-
   before do
     Capybara.app = TestApp
   end
@@ -257,5 +255,4 @@ describe Capybara::DSL do
       foo.using_wait_time(6)
     end
   end
-
 end

spec/rspec/features_spec.rb

@@ -1,14 +1,13 @@
 require 'spec_helper'
 require 'capybara/rspec'
 
-Capybara.app = TestApp
-
 RSpec.configuration.before(:each, :example_group => {:file_path => __FILE__}) do
   @in_filtered_hook = true
 end
 
 feature "Capybara's feature DSL" do
   background do
+    Capybara.app = TestApp
     @in_background = true
   end
 

spec/rspec/matchers_spec.rb

@@ -2,12 +2,14 @@ require 'spec_helper'
 require 'capybara/dsl'
 require 'capybara/rspec/matchers'
 
-Capybara.app = TestApp
-
 describe Capybara::RSpecMatchers do
   include Capybara::DSL
   include Capybara::RSpecMatchers
 
+  before :each do
+    Capybara.app = TestApp
+  end
+
   describe "have_css matcher" do
     it "gives proper description" do
       have_css('h1').description.should == "has css \"h1\""
@@ -564,4 +566,3 @@ describe Capybara::RSpecMatchers do
     end
   end
 end
-

spec/rspec_spec.rb

@@ -1,8 +1,10 @@
 require 'spec_helper'
 
-Capybara.app = TestApp
-
 describe 'capybara/rspec', :type => :request do
+  before :each do
+    Capybara.app = TestApp
+  end
+
   it "should include Capybara in rspec" do
     visit('/foo')
     page.body.should include('Another World')
@@ -41,12 +43,14 @@ end
 
 describe 'capybara/rspec', :type => :other do
   it "should not include Capybara" do
+    Capybara.app = TestApp
     expect { visit('/') }.to raise_error(NoMethodError)
   end
 end
 
 feature "Feature DSL" do
   scenario "is pulled in" do
+    Capybara.app = TestApp
     visit('/foo')
     page.body.should include('Another World')
   end