diff --git a/testsuite/unittests/test_spike_detector.sli b/testsuite/unittests/test_spike_detector.sli
index 20f0784ae2..ffbaaa1c61 100644
--- a/testsuite/unittests/test_spike_detector.sli
+++ b/testsuite/unittests/test_spike_detector.sli
@@ -29,8 +29,12 @@
    Description:
  
 
-   FirstVersion: Jan 2008
+   First Version: Jan 2008
    Author: Diesmann, Eppler
+	
+   Second Version: Aug 2016
+   Description: added more tests
+   Author: Sepehr Mahmoudian
  */
 
 (unittest) run
@@ -74,9 +78,34 @@ true exch {and} Fold   % all equal ?
 
 assert_or_die
 
+% Test the setting of the /precision value absent precise models
+% 1 Checking the default value and changing it
+
+  ResetKernel
+  /spike_detector Create /sd Set
+
+  % is the default correctly set to 3?
+  sd GetStatus /precision get dup /p_val Set 3 eq assert_or_die
+
+  % is the precision still the same after simulating for some time?
+  10 Simulate
+  sd GetStatus /precision get p_val eq assert_or_die
+
+% 2. Setting Precision 
+
+  ResetKernel
+  /spike_detector Create /sd Set
+
+  % can the precision be correctly set?
+  sd << /precision 17 >> SetStatus 
+  sd GetStatus /precision get 17 eq assert_or_die
+
+  % Is the precision the same after simulating?
+  10 Simulate
+  sd GetStatus /precision get 17 eq assert_or_die
 
 % Test the behavior of the /precise_times flag
-% 1. if the user does not set it
+% 3. if the user does not set it
 
   ResetKernel
   /spike_detector Create /sd Set
@@ -85,7 +114,7 @@ assert_or_die
   sd GetStatus /precise_times get dup /pt_flag Set false eq assert_or_die
 
   % is the flag still the same after simulating for some time?
-  100 Simulate
+  10 Simulate
   sd GetStatus /precise_times get pt_flag eq assert_or_die
 
   % is the flag still the same after the creation of a precise neuron?
@@ -93,23 +122,41 @@ assert_or_die
   sd GetStatus /precise_times get pt_flag eq assert_or_die
 
   % does the flag change to true if simulating with a precise neuron around?
-  100 Simulate
+  10 Simulate
   sd GetStatus /precise_times get true eq assert_or_die
 
-% 2.a if the user sets the flag to false
+  % check if precision correctly increased to 15.
+  sd GetStatus /precision get 15 eq assert_or_die
+
+% 4.a if the user sets the flag to false
 
   ResetKernel
   /spike_detector Create /sd Set
   sd << /precise_times false >> SetStatus
   /iaf_psc_exp_ps Create ;
-  100 Simulate
+  10 Simulate
   sd GetStatus /precise_times get false eq assert_or_die
 
-% 2.b if the user sets the flag to true
+% 4.b if the user sets the flag to true
 
   ResetKernel
   /spike_detector Create /sd Set
   sd << /precise_times true >> SetStatus
   /iaf_psc_exp_ps Create ;
-  100 Simulate
+  10 Simulate
   sd GetStatus /precise_times get true eq assert_or_die
+
+% 5. Can precision be set correctly when precise models exist?
+
+  ResetKernel
+  /spike_detector Create /sd Set
+
+  % If user does not set precise_times, it will be set to true
+  /iaf_psc_exp_ps Create ;
+  sd << /precision 17 >> SetStatus 
+  sd GetStatus /precision get 17 eq assert_or_die
+
+  % does it remain the same after simulation?
+  10 Simulate
+  sd GetStatus /precision get 17 eq assert_or_die
+