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-rw-r--r--tests/extmod/ubinascii_micropython.py3
1 files changed, 3 insertions, 0 deletions
diff --git a/tests/extmod/ubinascii_micropython.py b/tests/extmod/ubinascii_micropython.py
index a4c00a2cb8..77084ec9ee 100644
--- a/tests/extmod/ubinascii_micropython.py
+++ b/tests/extmod/ubinascii_micropython.py
@@ -10,3 +10,6 @@ except ImportError:
# two arguments supported in uPy but not CPython
a = binascii.hexlify(b'123', ':')
print(a)
+
+# zero length buffer
+print(binascii.hexlify(b'', b':'))