1 files changed, 4 insertions, 1 deletions
diff --git a/test/sca/test_traceset.py b/test/sca/test_traceset.py
index 90768c2..f12f205 100644
--- a/test/sca/test_traceset.py
+++ b/test/sca/test_traceset.py
@@ -1,6 +1,6 @@
-from unittest import TestCase
 import os.path
 import tempfile
+from unittest import TestCase
 
 from pyecsca.sca import TraceSet, InspectorTraceSet, ChipWhispererTraceSet
 
@@ -49,6 +49,9 @@ class InspectorTraceSetTests(TestCase):
             self.assertTrue(os.path.exists(path))
             self.assertIsNotNone(InspectorTraceSet(path))
 
+        with self.assertRaises(ValueError):
+            trace_set.save(None)
+
 
 class ChipWhispererTraceSetTest(TestCase):