Fix the case for app extensions

lib/cocoapods/installer/xcode/pods_project_generator.rb

@@ -218,6 +218,7 @@ module Pod
           frameworks_group = project.frameworks_group
           test_only_pod_targets = pod_targets.dup
           pod_targets_for_deps = Set.new
+          pod_extension_targets = Set.new
           aggregate_targets.each do |aggregate_target|
             is_app_extension = !(aggregate_target.user_targets.map(&:symbol_type) &
                                  [:app_extension, :watch_extension, :watch2_extension, :tv_extension, :messages_extension]).empty?
@@ -240,13 +241,18 @@ module Pod
               aggregate_target.native_target.add_dependency(pod_target.native_target)
               configure_app_extension_api_only_for_target(pod_target) if is_app_extension
 
+              if is_app_extension
+                pod_extension_targets << pod_target
+              end
+
               pod_targets_for_deps << pod_target
+
               unless pod_target.static_framework?
                 add_pod_target_test_dependencies(pod_target, frameworks_group)
               end
             end
           end
-          test_pod_targets_for_deps = Set.new
+
           # Wire up remaining pod targets used only by tests and are not used by any aggregate target.
           test_only_pod_targets.each do |pod_target|
             unless pod_target.should_build?
@@ -254,24 +260,20 @@ module Pod
               next
             end
             unless pod_target.static_framework?
-              test_pod_targets_for_deps << pod_target
+              pod_targets_for_deps << pod_target
               add_pod_target_test_dependencies(pod_target, frameworks_group)
             end
           end
 
           # Actually add the dependent targets
           pod_targets_for_deps.each do |pod_target|
+            is_app_extension = pod_extension_targets.include? pod_target
             add_dependent_targets_to_native_target(pod_target.dependent_targets,
-                                         pod_target.native_target, is_app_extension,
+                                                   pod_target.native_target,
+                                                   is_app_extension,
                                                    pod_target.requires_frameworks? && !pod_target.static_framework?,
                                                    frameworks_group)
           end
-
-          test_pod_targets_for_deps.each do |test_pod_target|
-            add_dependent_targets_to_native_target(test_pod_target.dependent_targets,
-                                                   test_pod_target.native_target, false,
-                                                   test_pod_target.requires_frameworks?, frameworks_group)
-          end
         end
 
         # @param  [String] pod The root name of the development pod.