diff --git a/library/cadbiom/models/clause_constraints/mcl/MCLSolutions.py b/library/cadbiom/models/clause_constraints/mcl/MCLSolutions.py
index 006782be780f966030bd7736c200ca21d97fcb66..146b56204197ecf8359f1b1d8ff6d3d2f5167fb8 100644
--- a/library/cadbiom/models/clause_constraints/mcl/MCLSolutions.py
+++ b/library/cadbiom/models/clause_constraints/mcl/MCLSolutions.py
@@ -392,7 +392,8 @@ class FrontierSolution(object):
         @param other: a DimacsFrontierSol
         @return bool
         """
-        return set(self.frontier_values) == set(other.frontier_values)
+        # return set(self.frontier_values) == set(other.frontier_values)
+        raise NotImplementedError
 
     def save(self, outfile):
         """
diff --git a/library/cadbiom/models/clause_constraints/mcl/TestCLUnfolder.py b/library/cadbiom/models/clause_constraints/mcl/TestCLUnfolder.py
index 8e972877b6155ac43a22274d347fc6c008fd67bb..ec2069ae122e6a4f90cf4d2b15fca1e470b3832e 100644
--- a/library/cadbiom/models/clause_constraints/mcl/TestCLUnfolder.py
+++ b/library/cadbiom/models/clause_constraints/mcl/TestCLUnfolder.py
@@ -148,6 +148,12 @@ def model4():
     node_i =  root.add_input_node('in1', 0, 0)
     tri = root.add_transition(node_i, node_1)
     tri.set_condition("n5")
+
+    # Frontier test: Add a start node on n3 or do not attempt any frontier
+    # place because there is a SCC composed of n3, n4, n5.
+    #node_s = root.add_start_node('s1', 0, 0)
+    #root.add_transition(node_s, node_3)
+
     return model
 
 def create_unfolder(model):
@@ -247,8 +253,8 @@ class TestCLUnfolder(unittest.TestCase):
         model = model4()
         unfolder = create_unfolder(model)
         cfr =  unfolder.get_frontier()
-        res = len(cfr) == 1
-        res = res and unfolder.get_var_name(cfr[0]) == 'n3'
+        res = len(cfr) == 0
+#        res = res and unfolder.get_var_name(cfr[0]) == 'n3'
         self.assert_(res,'Error in frontier: model4')
 
 
diff --git a/library/cadbiom/models/clause_constraints/mcl/TestMCLAnalyser.py b/library/cadbiom/models/clause_constraints/mcl/TestMCLAnalyser.py
index 38378eb8ca085cb7b658ebb2ea05ae4aef880568..3b8a0afacb0c1372c9a01efec249c2e087b3d81b 100644
--- a/library/cadbiom/models/clause_constraints/mcl/TestMCLAnalyser.py
+++ b/library/cadbiom/models/clause_constraints/mcl/TestMCLAnalyser.py
@@ -41,7 +41,7 @@
 """
 Unitary Tests for the MCLAnalyser
 """
-
+from __future__ import print_function
 import unittest
 import sys, os
 
@@ -50,6 +50,7 @@ from cadbiom.models.guard_transitions.simulator.chart_simul import ChartSimulato
 from cadbiom.models.guard_transitions.chart_model import ChartModel
 from cadbiom.models.clause_constraints.mcl.MCLQuery import MCLSimpleQuery
 from cadbiom.models.clause_constraints.mcl.MCLSolutions import FrontierSolution
+from cadbiom.commons import DIR_LOGS
 
 TRACE_FILE = sys.stdout
 #TRACE_FILE = open("/tmp/testMCLAnalyzer.txt",'w')
@@ -99,13 +100,13 @@ class ErrorRep(object):
         just printing
         """
         self.error = True
-        print '\n>> '+self.context+"  "+mess
+        print('\n>> '+self.context+"  "+mess)
 
     def display_info(self, mess):
         """
         just printing
         """
-        print '\n-- '+mess
+        print('\n-- '+mess)
 
     def set_context(self, cont):
         """
@@ -146,6 +147,7 @@ class TestMCLAnaLyzer(unittest.TestCase):
         res = lit_sol_equal(sol1, sol2)
         self.assert_(not res, 'Error in lit_sol inequality: number case')
 
+    @unittest.skip("Test files not provided")
     def test_load1(self):
         """
         Load from a bcx file
@@ -167,6 +169,7 @@ class TestMCLAnaLyzer(unittest.TestCase):
         res = rep.error
         self.assert_(not res, 'Error in load2')
 
+    @unittest.skip("Test files not provided")
     def test_load3(self):
         """
         Load from a PID file
@@ -332,6 +335,7 @@ class TestMCLAnaLyzer(unittest.TestCase):
         self.assert_(res, 'Error unflatten')
 
 
+    @unittest.skip("Test files not provided")
     def test_dimacs_frontier(self):
         """
         frontier solution in DIMACS form
@@ -363,6 +367,7 @@ class TestMCLAnaLyzer(unittest.TestCase):
             res = res and (sol.get_solution()[i] == sol2.get_solution()[i])
         self.assert_(not res, 'Error dimacs_frontier: solutions not different')
 
+    @unittest.skip("Test files not provided")
     def test_prune(self):
         """
         pruning a solution
@@ -554,23 +559,26 @@ class TestMCLAnaLyzer(unittest.TestCase):
         query = MCLSimpleQuery(None, None, f_prop)
         macwic = mcla.mac_search(query, 10)
 
-        f_out = file("x_file", 'w')
+        f_out = file(DIR_LOGS + "x_file", 'w')
 #        print macwic[0].activated_frontier
 #        print macwic[0].ic_sequence
 #        print '---------------'
 
         macwic[0].save(f_out)
-        r_front = FrontierSolution.from_file("x_file")
+        r_front = FrontierSolution.from_file(DIR_LOGS + "x_file")
 #        print r_front.activated_frontier
 #        print r_front.ic_sequence
-        res = r_front.has_same_frontier(macwic[0])
+        res = set(macwic[0].activated_frontier) == set(r_front.activated_frontier)
+        res = res and set( macwic[0].ic_sequence) == set(r_front.ic_sequence)
+        # res = r_front.has_same_frontier(macwic[0]) # Not implemented
         self.assert_(res, "Frontier solutions differ after read")
-        os.remove("x_file")
+        os.remove(DIR_LOGS + "x_file")
 
 
     def test_mac_inhibitor(self):
         """
         test
+        [A1, B1,C1] not strong activator, D is a strong inhibitor
         """
         rep = ErrorRep()
         mcla = MCLAnalyser(rep)
diff --git a/library/cadbiom/models/clause_constraints/mcl/TestMCLTranslators.py b/library/cadbiom/models/clause_constraints/mcl/TestMCLTranslators.py
index b8dd947532fb7cdb7ab71a16bf134a8c2aaa81ab..29deb0e8c1161612bf5ab96a9152aca0b8f5bf77 100644
--- a/library/cadbiom/models/clause_constraints/mcl/TestMCLTranslators.py
+++ b/library/cadbiom/models/clause_constraints/mcl/TestMCLTranslators.py
@@ -769,6 +769,7 @@ class TestFull(unittest.TestCase):
         TRACE_FILE.write( 'place_clocks'+ cl_ds.place_clocks.__str__()+'\n')
         TRACE_FILE.write( 'inputs'+ cl_ds.inputs.__str__()+'\n')
 
+    @unittest.skip("Test files not provided")
     def test_tgf_no_clock(self):
         """
         optimisation gain comparison