tests/basics: Add more tuple tests to improve coverage testing.

tests/basics/builtin_hash.py

@@ -3,6 +3,7 @@
 print(hash(False))
 print(hash(True))
 print({():1}) # hash tuple
+print({(1,):1}) # hash non-empty tuple
 print({1 << 66:1}) # hash big int
 print({-(1 << 66):2}) # hash negative big int
 print(hash in {hash:1}) # hash function