update: test_update_frequency

Author: kozistr

tests/test_optimizer_parameters.py

@@ -123,6 +123,12 @@ def test_reduction(optimizer_names):
         PCGrad(optimizer, reduction='wrong')
 
 
+@pytest.mark.parametrize('optimizer_names', ['shampoo'])
+def test_update_frequency(optimizer_names):
+    with pytest.raises(ValueError):
+        load_optimizers(optimizer_names)([None], update_freq=0)
+
+
 def test_sam_parameters():
     with pytest.raises(ValueError):
         SAM(None, load_optimizers('adamp'), rho=-0.1)