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import py
from rpython.rtyper.test.tool import BaseRtypingTest
class TestRemptydict(BaseRtypingTest):
def test_empty_dict(self):
class A:
pass
a = A()
a.d1 = {}
def func():
a.d2 = {}
return bool(a.d1) or bool(a.d2)
res = self.interpret(func, [])
assert res is False
def test_iterate_over_empty_dict(self):
def f():
n = 0
d = {}
for x in []: n += x
for y in d: n += y
for z in d.iterkeys(): n += z
for s in d.itervalues(): n += s
for t, u in d.items(): n += t * u
for t, u in d.iteritems(): n += t * u
return n
res = self.interpret(f, [])
assert res == 0
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