def test_lazy_clear(self):
d = LazyDict({1:1, 2:2, 3:3})
d.set_stub(4, lambda x:x)
d.clear()
self.assertEqual(d, {})
self.assertEqual(set(d.keys()), set())
self.assertEqual(set(d.values()), set())
self.assertRaises(TypeError, d.clear, None)
def test_lazy_update(self):
d = LazyDict()
d.set_stub(4, lambda x:x)
d.update(LazyDict({1:100}))
d.update(LazyDict({2:20}))
d.update({4:5})
d.update(LazyDict({1:1, 2:2, 3:3}))
self.assertEqual(d, {1:1, 2:2, 3:3, 4:5})
d.update()
self.assertEqual(d, {1:1, 2:2, 3:3, 4:5})
self.assertRaises((TypeError, AttributeError), d.update, None)
class SimpleUserDict:
def __init__(self):
self.d = {1:1, 2:2, 3:3}
def keys(self):
return self.d.keys()
def __getitem__(self, i):
return self.d[i]
d.clear()
d.update(SimpleUserDict())
self.assertEqual(d, {1:1, 2:2, 3:3})
def test_update(self):
d = LazyDict()
d.update({1:100})
d.update({2:20})
d.update({1:1, 2:2, 3:3})
self.assertEqual(d, {1:1, 2:2, 3:3})
d.update()
self.assertEqual(d, {1:1, 2:2, 3:3})
self.assertRaises((TypeError, AttributeError), d.update, None)
class SimpleUserDict:
def __init__(self):
self.d = {1:1, 2:2, 3:3}
def keys(self):
return self.d.keys()
def __getitem__(self, i):
return self.d[i]
d.clear()
d.update(SimpleUserDict())
self.assertEqual(d, {1:1, 2:2, 3:3})
class Exc(Exception): pass
d.clear()
class FailingUserDict:
def keys(self):
raise Exc
self.assertRaises(Exc, d.update, FailingUserDict())
class FailingUserDict:
def keys(self):
class BogonIter:
def __init__(self):
self.i = 1
def __iter__(self):
return self
def __next__(self):
if self.i:
self.i = 0
return 'a'
raise Exc
next = __next__
return BogonIter()
def __getitem__(self, key):
return key
self.assertRaises(Exc, d.update, FailingUserDict())
class FailingUserDict:
def keys(self):
class BogonIter:
def __init__(self):
self.i = ord('a')
def __iter__(self):
return self
def __next__(self):
if self.i <= ord('z'):
rtn = chr(self.i)
self.i += 1
return rtn
raise StopIteration
next = __next__
return BogonIter()
def __getitem__(self, key):
raise Exc
self.assertRaises(Exc, d.update, FailingUserDict())
class badseq(object):
def __iter__(self):
return self
def __next__(self):
raise Exc()
next = __next__
self.assertRaises(Exc, {}.update, badseq())
self.assertRaises(ValueError, {}.update, [(1, 2, 3)])
def test_clear(self):
d = LazyDict({1:1, 2:2, 3:3})
d.clear()
self.assertEqual(d, {})
self.assertRaises(TypeError, d.clear, None)
