micropython/tests/basics/builtin_hash_intbig.py

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# test builtin hash function
print({1 << 66:1}) # hash big int
print({-(1 << 66):2}) # hash negative big int
# __hash__ returning a large number should be truncated
class F:
def __hash__(self):
return 1 << 70 | 1
print(hash(F()) != 0)
# this had a particular error with internal integer arithmetic of hash function
print(hash(6699999999999999999999999999999999999999999999999999999999999999999999) != 0)