1 files changed, 8 insertions, 0 deletions
diff --git a/tests/pyb/can.py b/tests/pyb/can.py
index 63a3be4e92..8c86349ea9 100644
--- a/tests/pyb/can.py
+++ b/tests/pyb/can.py
@@ -1,6 +1,14 @@
 from pyb import CAN
 import pyb
 
+# test we can correctly create by id or name
+for bus in (-1, 0, 1, 2, 3, "YA", "YB", "YC"):
+    try:
+        CAN(bus, CAN.LOOPBACK)
+        print("CAN", bus)
+    except ValueError:
+        print("ValueError", bus)
+
 CAN.initfilterbanks(14)
 can = CAN(1)
 print(can)