diff --git a/tests/sched/testcases b/tests/sched/testcases
index a3f9d7e995..8058fbf85b 100644
--- a/tests/sched/testcases
+++ b/tests/sched/testcases
@@ -633,6 +633,53 @@
  ! [--------------]              [----------------] !
  [--------------------------------------------------]
 
+52b) 
+
+ [-bin----------------------------------------------------------------------------------------------]
+ ! [-thread-------------------------]                                            [-thread---------] !
+ ! ! [--------]        [--------]   !     [-----]      [--------]      [-----]   !    [--------]  ! ! 
+ ! ! !faksesrc!        !identity!   !     !queue!      !identity!      !queue!   !    !fakesink!  ! !   
+ ! ! !       src --- sink       src --- sink   src -- sink    src -- sink   src --  sink       !  ! !
+ ! ! [--------]        [--------]   !     [-----]      [--------]      [-----]   !    [--------]  ! !
+ ! [--------------------------------]                                            [----------------] !
+ [--------------------------------------------------------------------------------------------------]
+
+
+52c) 
+
+ [-bin----------------------------------------------------------------------------------------------]
+ ! [-thread-------------------------]                                            [-thread---------] !
+ ! ! [--------]        [--------]   !     [-----]      [--------]      [-----]   !    [--------]  ! ! 
+ ! ! !faksesrc!        !identity!   !     !queue!      !identity!      !queue!   !    !fakesink!  ! !   
+ ! ! !       src --- sink   *   src --- sink   src -- sink    src -- sink   src --  sink       !  ! !
+ ! ! [--------]        [--------]   !     [-----]      [--------]      [-----]   !    [--------]  ! !
+ ! [--------------------------------]                                            [----------------] !
+ [--------------------------------------------------------------------------------------------------]
+
+52d) 
+
+ [-bin----------------------------------------------------------------------------------------------]
+ ! [-thread-------------------------]                                            [-thread---------] !
+ ! ! [--------]        [--------]   !     [-----]      [--------]      [-----]   !    [--------]  ! ! 
+ ! ! !faksesrc!        !identity!   !     !queue!      !identity!      !queue!   !    !fakesink!  ! !   
+ ! ! !       src --- sink       src --- sink   src -- sink *  src -- sink   src --  sink       !  ! !
+ ! ! [--------]        [--------]   !     [-----]      [--------]      [-----]   !    [--------]  ! !
+ ! [--------------------------------]                                            [----------------] !
+ [--------------------------------------------------------------------------------------------------]
+
+52e) 
+
+ [-bin----------------------------------------------------------------------------------------------]
+ ! [-thread-------------------------]                                            [-thread---------] !
+ ! ! [--------]        [--------]   !     [-----]      [--------]      [-----]   !    [--------]  ! ! 
+ ! ! !faksesrc!        !identity!   !     !queue!      !identity!      !queue!   !    !fakesink!  ! !   
+ ! ! !       src --- sink   *   src --- sink   src -- sink *  src -- sink   src --  sink       !  ! !
+ ! ! [--------]        [--------]   !     [-----]      [--------]      [-----]   !    [--------]  ! !
+ ! [--------------------------------]                                            [----------------] !
+ [--------------------------------------------------------------------------------------------------]
+
+
+
 
 /**********************************************************************************
  * thread-bin in bin
@@ -746,6 +793,54 @@
  ! [--------------------------------]              [----------------] !
  [--------------------------------------------------------------------]
 
+/* non blocking queue ? */
+
+61a)
+
+ [-bin----------------------------------------------------------------------------------------------]
+ ! [-thread-------------------------]                                            [-bin------------] !
+ ! ! [--------]        [--------]   !     [-----]      [--------]      [-----]   !    [--------]  ! ! 
+ ! ! !faksesrc!        !identity!   !     !queue!      !identity!      !queue!   !    !fakesink!  ! !   
+ ! ! !       src --- sink       src --- sink   src -- sink    src -- sink   src --  sink       !  ! !
+ ! ! [--------]        [--------]   !     [-----]      [--------]      [-----]   !    [--------]  ! !
+ ! [--------------------------------]                                            [----------------] !
+ [--------------------------------------------------------------------------------------------------]
+
+
+61b)
+
+ [-bin----------------------------------------------------------------------------------------------]
+ ! [-thread-------------------------]                                            [-bin------------] !
+ ! ! [--------]        [--------]   !     [-----]      [--------]      [-----]   !    [--------]  ! ! 
+ ! ! !faksesrc!        !identity!   !     !queue!      !identity!      !queue!   !    !fakesink!  ! !   
+ ! ! !       src --- sink  *    src --- sink   src -- sink    src -- sink   src --  sink       !  ! !
+ ! ! [--------]        [--------]   !     [-----]      [--------]      [-----]   !    [--------]  ! !
+ ! [--------------------------------]                                            [----------------] !
+ [--------------------------------------------------------------------------------------------------]
+
+
+61c)
+
+ [-bin----------------------------------------------------------------------------------------------]
+ ! [-thread-------------------------]                                            [-bin------------] !
+ ! ! [--------]        [--------]   !     [-----]      [--------]      [-----]   !    [--------]  ! ! 
+ ! ! !faksesrc!        !identity!   !     !queue!      !identity!      !queue!   !    !fakesink!  ! !   
+ ! ! !       src --- sink       src --- sink   src -- sink *  src -- sink   src --  sink       !  ! !
+ ! ! [--------]        [--------]   !     [-----]      [--------]      [-----]   !    [--------]  ! !
+ ! [--------------------------------]                                            [----------------] !
+ [--------------------------------------------------------------------------------------------------]
+
+
+61d)
+
+ [-bin----------------------------------------------------------------------------------------------]
+ ! [-thread-------------------------]                                            [-bin------------] !
+ ! ! [--------]        [--------]   !     [-----]      [--------]      [-----]   !    [--------]  ! ! 
+ ! ! !faksesrc!        !identity!   !     !queue!      !identity!      !queue!   !    !fakesink!  ! !   
+ ! ! !       src --- sink   *   src --- sink   src -- sink *  src -- sink   src --  sink       !  ! !
+ ! ! [--------]        [--------]   !     [-----]      [--------]      [-----]   !    [--------]  ! !
+ ! [--------------------------------]                                            [----------------] !
+ [--------------------------------------------------------------------------------------------------]
 
 
 /** bin first ******/
@@ -858,6 +953,68 @@
  [--------------------------------------------------------------------]
 
 
+71)
+
+ [-bin----------------------------------------------------------------------------------------------]
+ ! [-bin----------------------------]                                            [-thread---------] !
+ ! ! [--------]        [--------]   !     [-----]      [--------]      [-----]   !    [--------]  ! ! 
+ ! ! !faksesrc!        !identity!   !     !queue!      !identity!      !queue!   !    !fakesink!  ! !   
+ ! ! !       src --- sink       src --- sink   src -- sink    src -- sink   src --  sink       !  ! !
+ ! ! [--------]        [--------]   !     [-----]      [--------]      [-----]   !    [--------]  ! !
+ ! [--------------------------------]                                            [----------------] !
+ [--------------------------------------------------------------------------------------------------]
+
+
+72)
+
+ [-bin----------------------------------------------------------------------------------------------]
+ ! [-bin----------------------------]                                            [-thread---------] !
+ ! ! [--------]        [--------]   !     [-----]      [--------]      [-----]   !    [--------]  ! ! 
+ ! ! !faksesrc!        !identity!   !     !queue!      !identity!      !queue!   !    !fakesink!  ! !   
+ ! ! !       src --- sink  *    src --- sink   src -- sink    src -- sink   src --  sink       !  ! !
+ ! ! [--------]        [--------]   !     [-----]      [--------]      [-----]   !    [--------]  ! !
+ ! [--------------------------------]                                            [----------------] !
+ [--------------------------------------------------------------------------------------------------]
+
+
+73)
+
+ [-bin----------------------------------------------------------------------------------------------]
+ ! [-bin----------------------------]                                            [-thread---------] !
+ ! ! [--------]        [--------]   !     [-----]      [--------]      [-----]   !    [--------]  ! ! 
+ ! ! !faksesrc!        !identity!   !     !queue!      !identity!      !queue!   !    !fakesink!  ! !   
+ ! ! !       src --- sink       src --- sink   src -- sink *  src -- sink   src --  sink       !  ! !
+ ! ! [--------]        [--------]   !     [-----]      [--------]      [-----]   !    [--------]  ! !
+ ! [--------------------------------]                                            [----------------] !
+ [--------------------------------------------------------------------------------------------------]
+
+
+74)
+
+ [-bin----------------------------------------------------------------------------------------------]
+ ! [-bin----------------------------]                                            [-thread---------] !
+ ! ! [--------]        [--------]   !     [-----]      [--------]      [-----]   !    [--------]  ! ! 
+ ! ! !faksesrc!        !identity!   !     !queue!      !identity!      !queue!   !    !fakesink!  ! !   
+ ! ! !       src --- sink   *   src --- sink   src -- sink *  src -- sink   src --  sink       !  ! !
+ ! ! [--------]        [--------]   !     [-----]      [--------]      [-----]   !    [--------]  ! !
+ ! [--------------------------------]                                            [----------------] !
+ [--------------------------------------------------------------------------------------------------]
+
+
+75)
+
+ [-bin----------------------------------------------------------------------------------------------]
+ ! [-bin----------------------------]                                            [-thread---------] !
+ ! ! [--------]        [--------]   !     [-----]      [--------]      [-----]   !    [--------]  ! ! 
+ ! ! !faksesrc!        !identity!   !     !queue!      !identity!      !queue!   !    !fakesink!  ! !   
+ ! ! !       src --- sink   *   src --- sink   src -- sink *  src -- sink   src --  sink       !  ! !
+ ! ! [--------]        [--------]   !     [-----]      [--------]      [-----]   !    [--------]  ! !
+ ! [--------------------------------]                                            [----------------] !
+ [--------------------------------------------------------------------------------------------------]
+
+
+
+