Support mount-specific swagger_root and add swagger_filter setting

spec/generators/swagger_rails/install_generator_spec.rb

@@ -1,26 +1,34 @@
 require 'rails_helper'
 require 'generators/swagger_rails/install/install_generator'
 
-describe SwaggerRails::InstallGenerator do
-  include GeneratorSpec::TestCase
-  destination File.expand_path('../tmp', __FILE__)
+module SwaggerRails
 
-  before(:all) do
-    prepare_destination
-    config_dir = File.expand_path('../../fixtures/config', __FILE__)
-    FileUtils.cp_r(config_dir, destination_root)
+  describe InstallGenerator do
+    include GeneratorSpec::TestCase
+    destination File.expand_path('../tmp', __FILE__)
 
-    run_generator
+    before(:all) do
+      prepare_destination
+      fixtures_dir = File.expand_path('../fixtures', __FILE__)
+      FileUtils.cp_r("#{fixtures_dir}/config", destination_root)
+      FileUtils.cp_r("#{fixtures_dir}/spec", destination_root)
+
+      run_generator
+    end
+
+    it 'creates a default swagger directory' do
+      assert_directory('swagger/v1')
+    end
+
+    it 'installs swagger_rails initializer' do
+      assert_file('config/initializers/swagger_rails.rb')
+    end
+
+    it 'installs the swagger_helper for rspec' do
+      assert_file('spec/swagger_helper.rb')
+    end
+
+    it 'wires up the swagger routes'
+    # Not sure how to test this
   end
-
-  it 'creates a default swagger directory' do
-    assert_directory('swagger/v1')
-  end
-
-  it 'creates a swagger_rails initializer' do
-    assert_file('config/initializers/swagger_rails.rb')
-  end
-
-  it 'wires up the swagger routes'
-  # Not sure how to test this
 end