Fixing failed device tests

lib/run_loop/detect_aut/xcode.rb

@@ -43,10 +43,13 @@ def find_xcodeproj
       # @!visibility private
       def self.find_user_state_file
         username = RunLoop::Environment.username
-        xcworkspace = RunLoop::Environment.xcodeproj.gsub("xcodeproj", "xcworkspace")
-        file = Dir.glob("#{xcworkspace}/xcuserdata/#{username}.xcuserdatad/UserInterfaceState.xcuserstate")
-        if !file.nil? && file.is_a?(Array)
-          return file[0]
+        xcworkspace = RunLoop::Environment.xcodeproj
+        unless xcworkspace.nil?
+          xcworkspace = xcworkspace.gsub("xcodeproj", "xcworkspace")
+          file = Dir.glob("#{xcworkspace}/xcuserdata/#{username}.xcuserdatad/UserInterfaceState.xcuserstate")
+          if !file.nil? && file.is_a?(Array)
+            return file[0]
+          end
         end
       end
 
@@ -156,22 +159,24 @@ def xcode_preferences_plist
       end
 
       # @!visibility private
-      def self.pbuddy
+      def pbuddy
         @pbuddy ||= RunLoop::PlistBuddy.new
       end
 
       # @!visibility private
       def self.detect_selected_device
         file_name = find_user_state_file
-        selected_device = @pbuddy.plist_find_device(file_name)
-
-        udid = selected_device.split(':')[1]
-        selected_device = RunLoop::Device.device_with_identifier(udid)
-        #TODO now only returning detected device if simulator detected
-        if selected_device.simulator?
-          selected_device
-        else
-          nil
+        pbuddy ||= RunLoop::PlistBuddy.new
+        selected_device = pbuddy.plist_find_device(file_name)
+        if selected_device != '' && !selected_device.nil?
+          udid = selected_device.split(':')[1]
+          selected_device = RunLoop::Device.device_with_identifier(udid)
+          #TODO now only returning detected device if simulator detected
+          if selected_device.simulator?
+            selected_device
+          else
+            nil
+          end
         end
       end
     end

lib/run_loop/device.rb

@@ -142,8 +142,13 @@ def self.device_with_identifier(udid_or_name, options={})
     # @raise [ArgumentError] If DEVICE_TARGET or options specify an identifier
     #  that does not match an iOS Simulator or physical device.
     def self.detect_device(options, xcode, simctl, instruments)
-      device = RunLoop::DetectAUT::Xcode.detect_selected_device ||
-          self.device_from_opts_or_env(options)
+      detected_device = RunLoop::DetectAUT::Xcode.detect_selected_device
+      if detected_device.is_a?(RunLoop::Device)
+        device = detected_device
+      else
+        device = self.device_from_opts_or_env(options)
+      end
+
 
       # Passed an instance of RunLoop::Device
       return device if device && device.is_a?(RunLoop::Device)