def test_lazy_len(self):
d = LazyDict({'1':1})
self.assertEqual(len(d), 1)
d['2'] = 2
self.assertEqual(len(d), 2)
d.set_stub('3', lambda x: x)
self.assertEqual(len(d), 3)
def test_popitem(self):
# dict.popitem()
for copymode in -1, +1:
# -1: b has same structure as a
# +1: b is a.copy()
for log2size in range(12):
size = 2**log2size
a = LazyDict()
b = LazyDict()
for i in range(size):
a[repr(i)] = i
if copymode < 0:
b[repr(i)] = i
if copymode > 0:
b = a.copy()
for i in range(size):
ka, va = ta = a.popitem()
self.assertEqual(va, int(ka))
kb, vb = tb = b.popitem()
self.assertEqual(vb, int(kb))
self.assertFalse(copymode < 0 and ta != tb)
self.assertFalse(a)
self.assertFalse(b)
d = LazyDict()
self.assertRaises(KeyError, d.popitem)
def test_items(self):
d = LazyDict()
self.assertEqual(set(d.items()), set())
d = LazyDict({1:2})
self.assertEqual(set(d.items()), {(1, 2)})
self.assertRaises(TypeError, d.items, None)
def test_lazy_popitem(self):
d = LazyDict({1: 1})
d.set_stub(2, lambda x:x)
k, v = d.popitem()
self.assertEqual(k, v)
k, v = d.popitem()
self.assertEqual(k, v)
self.assertEqual(k, 2)
self.assertEqual(len(d._stubs), 0)
self.assertRaises(KeyError, d.popitem)
def test_keys(self):
d = LazyDict()
self.assertEqual(set(d.keys()), set())
d = LazyDict({'a': 1, 'b': 2})
k = d.keys()
self.assertTrue('a' in d)
self.assertTrue('b' in d)
self.assertEqual(set(k), {'a','b'})
self.assertRaises(TypeError, d.keys, None)
def test_setdefault(self):
# dict.setdefault()
d = LazyDict()
self.assertIs(d.setdefault('key0'), None)
d.setdefault('key0', [])
self.assertIs(d.setdefault('key0'), None)
d.setdefault('key', []).append(3)
self.assertEqual(d['key'][0], 3)
d.setdefault('key', []).append(4)
self.assertEqual(len(d['key']), 2)
self.assertRaises(TypeError, d.setdefault)
class Exc(Exception): pass
class BadHash(object):
fail = False
def __hash__(self):
if self.fail:
raise Exc()
else:
return 42
x = BadHash()
d[x] = 42
x.fail = True
self.assertRaises(Exc, d.setdefault, x, [])
def test_lazy_setdefault(self):
d = LazyDict()
self.assertIs(d.setdefault('key0'), None)
d.set_stub('key0', lambda x:'value0')
self.assertIs(d.setdefault('key0'), 'value0')
d.set_stub('key0', lambda x:'value0')
self.assertEqual(d.setdefault('key1', 'value1'), 'value1')
self.assertEqual(d['key1'], 'value1')
self.assertEqual(d.setdefault('key0', 'value2'), 'value0')
def test_lazy_keys(self):
def resolver(id):
p = {'b': 2, 'c': 3}
return p[id]
d = LazyDict({'a': 1})
d.set_stub('b', resolver)
d.set_stub('c', resolver)
d['d'] = 4
k = d.keys()
self.assertTrue('a' in d)
self.assertTrue('b' in d)
self.assertTrue('c' in d)
self.assertTrue('d' in d)
self.assertEqual(set(k), {'a','b','c','d'})
def test_lazy_get(self):
d = LazyDict({'a': 1, 'b': 2})
d.set_stub('d', lambda x:x)
self.assertIs(d.get('c'), None)
self.assertEqual(d.get('c', 3), 3)
self.assertEqual(d.get('a'), 1)
self.assertEqual(d.get('a', 3), 1)
self.assertEqual(d.get('d'), 'd')
self.assertEqual(d.get('d', 3), 'd')
self.assertRaises(TypeError, d.get)
self.assertRaises(TypeError, d.get, None, None, None)
def test_lazy_items(self):
d = LazyDict()
d.set_stub(1, lambda x:x)
self.assertEqual(set(d.items()), {(1, 1)})
d = LazyDict({1:2})
d.set_stub(2, lambda x:x)
self.assertEqual(set(d.items()), {(1, 2), (2, 2)})
def test_lazy_delitem(self):
d = LazyDict()
d['1'] = 1
d['2'] = 2
del d['1']
self.assertEqual(len(d), 1)
self.assertRaises(KeyError, d.__getitem__, '1')
d.set_stub('1', lambda x:x)
self.assertEqual(len(d), 2)
del d['1']
self.assertEqual(len(d), 1)
self.assertRaises(KeyError, d.__getitem__, '1')
d.set_stub('1', lambda x:x)
self.assertEqual(d['1'], '1')
del d['1']
self.assertEqual(len(d), 1)
self.assertRaises(KeyError, d.__getitem__, '1')
def test_get(self):
d = LazyDict()
self.assertIs(d.get('c'), None)
self.assertEqual(d.get('c', 3), 3)
d = LazyDict({'a': 1, 'b': 2})
self.assertIs(d.get('c'), None)
self.assertEqual(d.get('c', 3), 3)
self.assertEqual(d.get('a'), 1)
self.assertEqual(d.get('a', 3), 1)
self.assertRaises(TypeError, d.get)
self.assertRaises(TypeError, d.get, None, None, None)
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_pop(self):
# Tests for pop with specified key
d = LazyDict()
k, v = 'abc', 'def'
d[k] = v
self.assertRaises(KeyError, d.pop, 'ghi')
self.assertEqual(d.pop(k), v)
self.assertEqual(len(d), 0)
self.assertRaises(KeyError, d.pop, k)
# verify longs/ints get same value when key > 32 bits
# (for 64-bit archs). See SF bug #689659.
x = 4503599627370496
y = 4503599627370496
h = LazyDict({x: 'anything', y: 'something else'})
self.assertEqual(h[x], h[y])
self.assertEqual(d.pop(k, v), v)
d[k] = v
self.assertEqual(d.pop(k, 1), v)
self.assertRaises(TypeError, d.pop)
class Exc(Exception): pass
class BadHash(object):
fail = False
def __hash__(self):
if self.fail:
raise Exc()
else:
return 42
x = BadHash()
d[x] = 42
x.fail = True
self.assertRaises(Exc, d.pop, x)
def test_lazy_pop(self):
d = LazyDict()
k, v = ('abc', 'def')
d.set_stub(k, lambda x:'def')
self.assertRaises(KeyError, d.pop, 'ghi')
self.assertEqual(d.pop(k), v)
self.assertEqual(len(d), 0)
self.assertRaises(KeyError, d.pop, k)
self.assertEqual(d.pop(k, v), v)
d.set_stub(k, lambda x:v)
self.assertEqual(d.pop(k, 1), v)
self.assertRaises(TypeError, d.pop)
def test_lazy_values(self):
def resolver(id):
p = {'c': 3}
return p[id]
d = LazyDict()
self.assertEqual(set(d.values()), set())
d = LazyDict({1:2})
d.set_stub('c', resolver)
v = d.values()
self.assertEqual(set(v), {2,3})
self.assertRaises(TypeError, d.values, None)
def test_fromkeys(self):
self.assertEqual(LazyDict().fromkeys('abc'), {'a':None, 'b':None, 'c':None})
d = LazyDict()
self.assertIsNot(d.fromkeys('abc'), d)
self.assertEqual(d.fromkeys('abc'), LazyDict({'a':None, 'b':None, 'c':None}))
self.assertEqual(d.fromkeys((4,5),0), LazyDict({4:0, 5:0}))
self.assertEqual(d.fromkeys([]), LazyDict())
def g():
yield 1
self.assertEqual(d.fromkeys(g()), LazyDict({1:None}))
self.assertRaises(TypeError, {}.fromkeys, 3)
class dictlike(LazyDict): pass
self.assertEqual(dictlike.fromkeys('a'), LazyDict({'a':None}))
self.assertEqual(dictlike().fromkeys('a'), LazyDict({'a':None}))
self.assertTrue(type(dictlike.fromkeys('a')) is dictlike)
self.assertTrue(type(dictlike().fromkeys('a')) is dictlike)
class mydict(LazyDict):
def __new__(cls):
return LazyDict()
ud = mydict.fromkeys('ab')
self.assertEqual(ud, LazyDict({'a':None, 'b':None}))
self.assertTrue(isinstance(ud, LazyDict))
self.assertRaises(TypeError, dict.fromkeys)
class Exc(Exception): pass
class baddict1(LazyDict):
def __init__(self):
raise Exc()
self.assertRaises(Exc, baddict1.fromkeys, [1])
class baddict2(LazyDict):
def __setitem__(self, key, value):
raise Exc()
self.assertRaises(Exc, baddict2.fromkeys, [1])
# test fast path for dictionary inputs
d = LazyDict(zip(range(6), range(6)))
self.assertEqual(LazyDict.fromkeys(d, 0), LazyDict(zip(range(6), [0]*6)))
def test_lazy_copy(self):
d = LazyDict({'1':1})
d['2'] = 2
x = d.copy()
self.assertEqual(len(x), 2)
i = {'num': 0}
def r(key, i):
i['num'] += 1
return i['num']
d.set_stub('3', r, i)
x = d.copy()
self.assertEqual(d['3'], 1)
self.assertEqual(len(d._stubs), 0)
self.assertEqual(len(x._stubs), 1)
self.assertEqual(x['3'], 2)
self.assertEqual(len(x._stubs), 0)
x = d.copy()
self.assertEqual(d['3'], 1)
self.assertEqual(x['3'], 1)
def test_clear(self):
d = LazyDict({1:1, 2:2, 3:3})
d.clear()
self.assertEqual(d, {})
self.assertRaises(TypeError, d.clear, None)
def test_copy(self):
d = LazyDict({1:1, 2:2, 3:3})
self.assertEqual(d.copy(), LazyDict({1:1, 2:2, 3:3}))
self.assertEqual(LazyDict().copy(), LazyDict())
self.assertRaises(TypeError, d.copy, 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_values(self):
d = LazyDict()
self.assertEqual(set(d.values()), set())
d = LazyDict({1:2})
self.assertEqual(set(d.values()), {2})
self.assertRaises(TypeError, d.values, None)
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)])
