--- a/tests/test.py	Sat Mar 24 18:47:54 2018 +0100
+++ b/tests/test.py	Sat Mar 24 20:57:42 2018 +0100
@@ -90,10 +90,10 @@
             self.__check_tree(cfg)
 
 
-class T02LoadAndMerge(unittest.TestCase):
+class _T02MixinLoadAndMerge:
 
     def test01_load(self):
-        cfg = configmix.load(
+        cfg = self._load(
             os.path.join(TESTDATADIR, "conf20.yml"),
             os.path.join(TESTDATADIR, "conf21.yml"))
 
@@ -128,7 +128,7 @@
                          cfg.getvar_s("test.Str"))
 
     def test02_load_with_ini(self):
-        cfg = configmix.load(
+        cfg = self._load(
             os.path.join(TESTDATADIR, "conf20.yml"),
             os.path.join(TESTDATADIR, "conf21.yml"),
             os.path.join(TESTDATADIR, "conf22.ini"))
@@ -154,5 +154,17 @@
             url)
 
 
+class T02LoadAndMerge(_T02MixinLoadAndMerge, unittest.TestCase):
+
+    def setUp(self):
+        self._load = configmix.load
+
+
+class T03SafeLoadAndMerge(_T02MixinLoadAndMerge, unittest.TestCase):
+
+    def setUp(self):
+        self._load = configmix.safe_load
+
+
 if __name__ == "__main__":
     unittest.main()