Support for identifying hosts of embedded targets from sub-projects

CHANGELOG.md

@@ -4,7 +4,10 @@
 
 ##### Enhancements
 
-* None.  
+* Add support for identify the host of an embedded target,
+  when the embedded target belongs to a sub-project  
+  [Ben Asher](https://github.com/benasher44)
+  [#396](https://github.com/CocoaPods/Xcodeproj/pull/396)
 
 ##### Bug Fixes
 

lib/xcodeproj/project.rb

@@ -556,7 +556,7 @@ def embedded_targets_in_native_target(native_target)
     def host_targets_for_embedded_target(embedded_target)
       native_targets.select do |native_target|
         ((embedded_target.uuid != native_target.uuid) &&
-         (native_target.dependencies.map(&:target).map(&:uuid).include? embedded_target.uuid))
+         (native_target.dependencies.map(&:native_target_uuid).include? embedded_target.uuid))
       end
     end
 

lib/xcodeproj/project/object/target_dependency.rb

@@ -39,6 +39,17 @@ def display_name
           return target_proxy.remote_info if target_proxy
         end
 
+        # @return [String] uuid of the target, if the dependency
+        #         is a native target, otherwise the uuid of the
+        #         target in the sub-project if the dependency is
+        #         a target proxy
+        #
+        def native_target_uuid
+          return target.uuid if target
+          return target_proxy.remote_global_id_string if target_proxy
+          raise 'Expected target or target_proxy, from which to fetch a uuid'
+        end
+
         # @note This override is necessary because Xcode allows for circular
         #       target dependencies.
         #

spec/project/object/target_dependency_spec.rb

@@ -62,5 +62,36 @@ module ProjectSpecs
     end
 
     #----------------------------------------#
+
+    describe '#native_target_uuid' do
+      it "returns the target_proxy's remote_global_uuid_string" do
+        target = @project.new_target(:static, 'Pods', :ios)
+
+        proxy = @project.new(PBXContainerItemProxy)
+        proxy.container_portal = @project.root_object.uuid
+        proxy.remote_info = 'Pods'
+        proxy.proxy_type = '1'
+        proxy.remote_global_id_string = target.uuid
+
+        @target_dependency.target_proxy = proxy
+        @target_dependency.target_proxy.remote_global_id_string.nil?.should == false
+        @target_dependency.native_target_uuid.should == @target_dependency.target_proxy.remote_global_id_string
+      end
+
+      it "returns the target's uuid" do
+        target = @project.new_target(:static, 'Pods', :ios)
+        @target_dependency.target = target
+        @target_dependency.target.uuid.nil?.should == false
+        @target_dependency.native_target_uuid.should == @target_dependency.target.uuid
+      end
+
+      it "raises if target and target_proxy aren't set" do
+        @target_dependency.target.nil?.should == true
+        @target_dependency.target_proxy.nil?.should == true
+        should.raise do
+          @target_dependency.native_target_uuid
+        end.message.should.match /Expected target or target_proxy, from which to fetch a uuid/
+      end
+    end
   end
 end

spec/project_spec.rb

@@ -640,6 +640,27 @@ def target_for_target_name(name)
       end
     end
 
+    describe 'Remote embedded target relationships' do
+      before do
+        dir = Pathname(fixture_path('Sample Project'))
+        project_path = dir + 'ContainsSubproject/ContainsSubproject.xcodeproj'
+        subproject_path = dir + 'ReferencedProject/ReferencedProject.xcodeproj'
+        @project = Xcodeproj::Project.open(project_path)
+        @subproject = Xcodeproj::Project.open(subproject_path)
+      end
+
+      def subproject_target_for_target_name(name)
+        @subproject.native_targets.find do |target|
+          target.name == name
+        end
+      end
+
+      it 'identifies host of target from a sub-project' do
+        subproject_target = subproject_target_for_target_name('ReferencedProject')
+        @project.host_targets_for_embedded_target(subproject_target).map(&:name).should == ['ContainsSubproject']
+      end
+    end
+
     #-------------------------------------------------------------------------#
   end
 end