Updated unit tests.

tests/runalltests.m

@@ -35,10 +35,10 @@ unit_tests_root = strrep(which('runalltests'),'runalltests.m','');
 
 % Initialize the dseries module
 try
-    dseries.initialize();
+    dseries().initialize();
 catch
     addpath([unit_tests_root '../src']);
-    dseries.initialize();
+    dseries().initialize();
 end
 
 warning off
@@ -64,4 +64,4 @@ end
 warning on
 path(opath);
 
-display_report(r);
\ No newline at end of file
+display_report(r);