diff --git a/tests/basics/bytes_format_modulo.py b/tests/basics/bytes_format_modulo.py
new file mode 100644
index 0000000000..70246e72dc
--- /dev/null
+++ b/tests/basics/bytes_format_modulo.py
@@ -0,0 +1,7 @@
+# This test requires CPython3.5
+print(b"%%" % ())
+print(b"=%d=" % 1)
+print(b"=%d=%d=" % (1, 2))
+
+print(b"=%s=" % b"str")
+print(b"=%r=" % b"str")
diff --git a/tests/basics/bytes_format_modulo.py.exp b/tests/basics/bytes_format_modulo.py.exp
new file mode 100644
index 0000000000..782b7f91fc
--- /dev/null
+++ b/tests/basics/bytes_format_modulo.py.exp
@@ -0,0 +1,5 @@
+b'%'
+b'=1='
+b'=1=2='
+b'=str='
+b"=b'str'="