[Validator] Support linting pods that link against XCTest

lib/cocoapods/generator/xcconfig/xcconfig_helper.rb

@@ -314,7 +314,6 @@ module Pod
                 search_paths << search_path
               end
             end
-            search_paths
           end
         end
 

lib/cocoapods/validator.rb

@@ -388,10 +388,19 @@ module Pod
 
       source_file = write_app_import_source_file(pod_target)
       source_file_ref = app_project.new_group('App', 'App').new_file(source_file)
-      app_project.targets.first.add_file_references([source_file_ref])
+      app_target = app_project.targets.first
+      app_target.add_file_references([source_file_ref])
+      add_xctest(app_target) if @installer.pod_targets.any? { |pt| pt.spec_consumers.any? { |c| c.frameworks.include?('XCTest') } }
       app_project.save
     end
 
+    def add_xctest(app_target)
+      app_target.build_configurations.each do |configuration|
+        search_paths = configuration.build_settings['FRAMEWORK_SEARCH_PATHS'] ||= '$(inherited)'
+        search_paths << ' "$(PLATFORM_DIR)/Developer/Library/Frameworks"'
+      end
+    end
+
     def write_app_import_source_file(pod_target)
       language = pod_target.uses_swift? ? :swift : :objc
 

spec/unit/validator_spec.rb

@@ -568,7 +568,8 @@ module Pod
         it 'adds the importing file to the app target' do
           @validator.stubs(:use_frameworks).returns(true)
           @validator.send(:create_app_project)
-          pod_target = stub(:uses_swift? => true, :should_build? => true, :pod_name => 'JSONKit', :product_module_name => 'ModuleName')
+          pod_target = fixture_pod_target('banana-lib/BananaLib.podspec')
+          pod_target.stubs(:uses_swift? => true, :pod_name => 'JSONKit')
           installer = stub(:pod_targets => [pod_target])
           @validator.instance_variable_set(:@installer, installer)
           @validator.send(:add_app_project_import)
@@ -580,6 +581,21 @@ module Pod
           target = project.native_targets.find { |t| t.name == 'App' }
           target.source_build_phase.files_references.should.include(file)
         end
+
+        it 'adds developer framework paths when the pod depends on XCTest' do
+          @validator.send(:create_app_project)
+          pod_target = fixture_pod_target('banana-lib/BananaLib.podspec')
+          pod_target.stubs(:uses_swift? => true, :pod_name => 'JSONKit')
+          pod_target.spec_consumers.first.stubs(:frameworks).returns(%w(XCTest))
+          installer = stub(:pod_targets => [pod_target])
+          @validator.instance_variable_set(:@installer, installer)
+          @validator.send(:add_app_project_import)
+
+          project = Xcodeproj::Project.open(@validator.validation_dir + 'App.xcodeproj')
+          project.native_targets.first.build_configurations.map do |bc|
+            bc.build_settings['FRAMEWORK_SEARCH_PATHS']
+          end.uniq.should == [%w($(inherited) "$(PLATFORM_DIR)/Developer/Library/Frameworks")]
+        end
       end
 
       describe 'file pattern validation' do