add a dummy source file to Pod, so that in case no source files presented, the…

add a dummy source file to Pod, so that in case no source files presented, the pod lib would still compile

lib/cocoapods.rb

@@ -30,6 +30,7 @@ module Pod
     autoload :BridgeSupport,        'cocoapods/generator/bridge_support'
     autoload :CopyResourcesScript,  'cocoapods/generator/copy_resources_script'
     autoload :Documentation,        'cocoapods/generator/documentation'
+    autoload :DummySource,          'cocoapods/generator/dummy_source'
   end
 end
 

lib/cocoapods/generator/dummy_source.rb

+module Pod
+  module Generator
+    class DummySource
+      def initialize(label)
+        @label = label
+      end
+
+      def save_as(pathname)
+        pathname.open('w') do |source|
+          source.puts "@interface #{@label}Dummy : NSObject"
+          source.puts "@end"
+          source.puts "@implementation #{@label}Dummy"
+          source.puts "@end"
+        end
+      end
+    end
+  end
+end

lib/cocoapods/installer/target_installer.rb

@@ -75,11 +75,11 @@ module Pod
 
         support_files_group = @project.group("Targets Support Files").create_group(@target_definition.label)
         support_files_group.create_files(target_support_files)
-
+        
         xcconfig_file = support_files_group.files.where(:path => @target_definition.xcconfig_name)
-
         configure_build_configurations(xcconfig_file)
         create_files(pods, sandbox)
+        @target.add_source_file(Pathname.new(@target_definition.dummy_source_name))
       end
 
       def configure_build_configurations(xcconfig_file)
@@ -104,6 +104,8 @@ module Pod
         save_prefix_header_as(sandbox.root + @target_definition.prefix_header_name, pods)
         puts "* Generating copy resources script at `#{sandbox.root + @target_definition.copy_resources_script_name}'" if config.verbose?
         copy_resources_script_for(pods).save_as(sandbox.root + @target_definition.copy_resources_script_name)
+        puts "* Generating dummy source at `#{sandbox.root + @target_definition.dummy_source_name}'" if config.verbose?
+        Generator::DummySource.new(@target_definition.label).save_as(Pathname.new(sandbox.root + @target_definition.dummy_source_name))
       end
       
       private

lib/cocoapods/podfile.rb

@@ -94,6 +94,10 @@ module Pod
       def prefix_header_name
         "#{label}-prefix.pch"
       end
+      
+      def dummy_source_name
+        "#{label}Dummy.m"
+      end
 
       def bridge_support_name
         "#{label}.bridgesupport"

spec/integration_spec.rb

@@ -118,6 +118,24 @@ else
             'DEPENDENCIES' => ["Reachability (from `#{url}')"]
           }
         end
+        
+        it "install a dummy source file" do
+          url = 'https://raw.github.com/gist/1349824/3ec6aa60c19113573fc48eac19d0fafd6a69e033/Reachability.podspec'
+          podfile = Pod::Podfile.new do
+            self.platform :ios
+            xcodeproj 'dummy'
+            dependency do |s|
+              s.name         = 'JSONKit'
+              s.version      = '1.2'
+              s.source       = { :git => SpecHelper.fixture('integration/JSONKit').to_s, :tag => 'v1.2' }
+              s.source_files = 'JSONKit.*'
+            end
+          end
+          
+          installer = SpecHelper::Installer.new(podfile)
+          installer.install!
+          
+        end
 
         it "installs a library with a podspec defined inline" do
           podfile = Pod::Podfile.new do

spec/unit/generator/dummy_source_spec.rb

+require File.expand_path('../../../spec_helper', __FILE__)
+
+describe Pod::Generator::DummySource do
+  it "generates a dummy sourcefile with the appropriate class"
+end