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-rw-r--r--tests/basics/bytes_add.py4
1 files changed, 4 insertions, 0 deletions
diff --git a/tests/basics/bytes_add.py b/tests/basics/bytes_add.py
index 5432d01e58..ebccf0662d 100644
--- a/tests/basics/bytes_add.py
+++ b/tests/basics/bytes_add.py
@@ -2,3 +2,7 @@
print(b"123" + b"456")
print(b"123" + bytearray(2))
+
+print(b"123" + b"") # RHS is empty, can be optimised
+print(b"" + b"123") # LHS is empty, can be optimised
+print(b"" + bytearray(1)) # LHS is empty but can't be optimised