diff --git a/python/obitools3/commands/test.pyx b/python/obitools3/commands/test.pyx
index 9f3cfce..8aee343 100644
--- a/python/obitools3/commands/test.pyx
+++ b/python/obitools3/commands/test.pyx
@@ -98,22 +98,29 @@ def test_set_and_get(config, infos):
     if len(element_names) > 1 :
         elt = random.choice(element_names)
         col[idx][elt] = value
-        assert col[idx][elt] == value, "Set value != gotten value"
+        assert col[idx][elt] == value, "Set value != gotten value "+str(col[idx][elt])+" != "+str(value)
     else:
         col[idx] = value
-        assert col[idx] == value, "Set value != gotten value"
+        assert col[idx] == value, "Set value != gotten value "+str(col[idx])+" != "+str(value)
     
     print_test(config, ">>> Set and get test OK")
 
 
 def test_add_col(config, infos):
     print_test(config, ">>> Add column test")
-#    new_col = random_bool(config)
-#    if new_col : TODO test adding existing column
+    #existing_col = random_bool(config)    # TODO doesn't work because of line count problem. See obiview.c line 1737
+    #if existing_col and infos["view_names"] != [] :
+    #    random_view = infos['dms'].open_view(random.choice(infos["view_names"]))
+    #    random_column = random_view[random.choice(list(random_view.get_columns()))]
+    #    random_column_refs = random_column.get_references()
+    #    if random_column_refs['name'] in infos['view'] :
+    #        alias = random_unique_name(infos)
+    #    else :
+    #        alias = ''
+    #    infos['view'].add_column(random_column_refs['name'], version_number=random_column_refs['version'], alias=alias, create=False)
+    #    random_view.save_and_close()
+    #else :
     create_random_column(config, infos)
-#    else :
-#        alias = random.choice(['', random_unique_name(infos)])
-#        infos['view'].add_column(column_name, version_number=-1, alias=alias, create=False)
     print_test(config, ">>> Add column test OK")
 
 
@@ -138,12 +145,6 @@ def test_col_alias(config, infos):
         return
     infos['view'].change_column_alias(col_name, random_unique_name(infos))
     print_test(config, ">>> Changing column alias test OK")
-
-
-def test_line_selection(config, infos):  # TODO
-    print_test(config, ">>> Selecting line test")
-    infos['view'].select_line(random.randint(0,infos['view'].get_line_count()))
-    print_test(config, ">>> Selecting line test OK")
         
 
 def test_new_view(config, infos):
@@ -211,14 +212,19 @@ def random_new_view(config, infos, first=False):
     clone = False
     quality_col = False     # TODO
     if not first:
+        infos['view_names'].append(infos['view'].get_name())
         infos['view'].save_and_close()
         v_to_clone = infos['dms'].open_view(random.choice(infos["view_names"]))
         v_type = None
+        print_test(config, "View to clone: ")
+        print_test(config, repr(v_to_clone))
         create_line_selection = random_bool(config)
-        if create_line_selection :
+        if create_line_selection and v_to_clone.get_line_count() > 0:
+            print_test(config, "New view with new line selection.")
             line_selection = []
             for i in range(random.randint(1, v_to_clone.get_line_count())) :
                 line_selection.append(random.randint(0, v_to_clone.get_line_count()-1))
+            print_test(config, "New line selection: "+str(line_selection))
     else :
         v_type = random_view_type()
     infos['view'] = infos['dms'].new_view(random_unique_name(infos), 
@@ -227,7 +233,12 @@ def random_new_view(config, infos, first=False):
                                           view_type=v_type, 
                                           comments=random_str_with_max_len(config['test']['commentsmaxlen']), 
                                           quality_column=quality_col)
+    print_test(config, repr(infos['view']))
     if v_to_clone is not None :
+        if line_selection is None:
+            assert v_to_clone.get_line_count() == infos['view'].get_line_count(), "New view and cloned view don't have the same line count"
+        else :
+            assert len(line_selection) == infos['view'].get_line_count(), "New view with new line selection does not have the right line count"
         v_to_clone.save_and_close()
     if first :
         fill_view(config, infos)
@@ -241,7 +252,6 @@ def ini_dms_and_first_view(config, infos):
     create_test_obidms(config, infos)
     random_new_view(config, infos, first=True)
     infos['view_names'] = []
-    infos['view_names'].append(infos['view'].get_name())
 
 
 def addOptions(parser):
@@ -320,21 +330,18 @@ def run(config):
              'view_names': None, 
              'unique_names': [],
              'random_generator': {"OBI_BOOL": random_bool, "OBI_CHAR": random_char, "OBI_FLOAT": random_float, "OBI_INT": random_int, "OBI_SEQ": random_seq, "OBI_STR": random_str},
-             'tests': [test_set_and_get, test_add_col, test_delete_col, test_col_alias] #, test_line_selection] # TODO
+             'tests': [test_set_and_get, test_add_col, test_delete_col, test_col_alias, test_new_view]
             }
 
     print("Initializing the DMS and the first view...")
-    
-    ini_dms_and_first_view(config, infos)
         
+    ini_dms_and_first_view(config, infos)
+    
     i = 0
     for t in range(config['test']['nbtests']):
         random_test(config, infos)
-        #print(repr(infos['view']))
+        print_test(config, repr(infos['view']))
         i+=1
-        # New view sometimes but max 100 because of issues with opened files number limit (news views and random modifications = lots of AVL files) TODO test without limit
-        if (i%(config['test']['nbtests']/100)) == 0 :
-            test_new_view(config, infos)
         if (i%(config['test']['nbtests']/10)) == 0 :
             print("Testing......"+str(i*100/config['test']['nbtests'])+"%")