diff --git a/python/tests/test_mechanics.py b/python/tests/test_mechanics.py
index 667747f8e..8557587fe 100644
--- a/python/tests/test_mechanics.py
+++ b/python/tests/test_mechanics.py
@@ -215,3 +215,7 @@ class TestMechanics:
     def test_invalid_decomposition(self):
         with pytest.raises(ValueError):
             mechanics._polar_decomposition(np.random.rand(10,3,3),'A')
+
+    def test_invalid_strain(self):
+        with pytest.raises(ValueError):
+            mechanics.strain(np.random.rand(10,3,3),'A',0)