Add test to make sure that bindings don't shadow builtins until reached

Author: bwhmather

Diff for: tests/test_ssort.py

@@ -557,3 +557,18 @@ def test_ssort_preserve_crlf_endlines_str():
 
     actual = ssort(original)
     assert actual == expected
+
+
+def test_shadow_builtin():
+    original = _clean(
+        """
+        print("Hello, World!")
+
+        def print(message):
+            pass
+        """
+    )
+    expected = original
+
+    actual = ssort(original)
+    assert actual == expected