diff options
Diffstat (limited to 'blist/test/mapping_tests.py')
| -rw-r--r-- | blist/test/mapping_tests.py | 679 |
1 files changed, 679 insertions, 0 deletions
diff --git a/blist/test/mapping_tests.py b/blist/test/mapping_tests.py new file mode 100644 index 0000000..d0a8da9 --- /dev/null +++ b/blist/test/mapping_tests.py @@ -0,0 +1,679 @@ +# This file taken from Python, licensed under the Python License Agreement
+
+# tests common to dict and UserDict
+import sys
+import collections
+from blist.test import unittest
+try:
+ from collections import UserDict # Python 3
+except ImportError:
+ from UserDict import UserDict # Python 2
+
+class BasicTestMappingProtocol(unittest.TestCase):
+ # This base class can be used to check that an object conforms to the
+ # mapping protocol
+
+ # Functions that can be useful to override to adapt to dictionary
+ # semantics
+ type2test = None # which class is being tested (overwrite in subclasses)
+
+ def _reference(self): # pragma: no cover
+ """Return a dictionary of values which are invariant by storage
+ in the object under test."""
+ return {1:2, "key1":"value1", "key2":(1,2,3)}
+ def _empty_mapping(self):
+ """Return an empty mapping object"""
+ return self.type2test()
+ def _full_mapping(self, data):
+ """Return a mapping object with the value contained in data
+ dictionary"""
+ x = self._empty_mapping()
+ for key, value in data.items():
+ x[key] = value
+ return x
+
+ def __init__(self, *args, **kw):
+ unittest.TestCase.__init__(self, *args, **kw)
+ self.reference = self._reference().copy()
+
+ # A (key, value) pair not in the mapping
+ key, value = self.reference.popitem()
+ self.other = {key:value}
+
+ # A (key, value) pair in the mapping
+ key, value = self.reference.popitem()
+ self.inmapping = {key:value}
+ self.reference[key] = value
+
+ def test_read(self):
+ # Test for read only operations on mapping
+ p = self._empty_mapping()
+ p1 = dict(p) #workaround for singleton objects
+ d = self._full_mapping(self.reference)
+ if d is p: # pragma: no cover
+ p = p1
+ #Indexing
+ for key, value in self.reference.items():
+ self.assertEqual(d[key], value)
+ knownkey = list(self.other.keys())[0]
+ self.failUnlessRaises(KeyError, lambda:d[knownkey])
+ #len
+ self.assertEqual(len(p), 0)
+ self.assertEqual(len(d), len(self.reference))
+ #__contains__
+ for k in self.reference:
+ self.assert_(k in d)
+ for k in self.other:
+ self.failIf(k in d)
+ #cmp
+ self.assertEqual(p, p)
+ self.assertEqual(d, d)
+ self.assertNotEqual(p, d)
+ self.assertNotEqual(d, p)
+ #__non__zero__
+ if p: self.fail("Empty mapping must compare to False")
+ if not d: self.fail("Full mapping must compare to True")
+ # keys(), items(), iterkeys() ...
+ def check_iterandlist(iter, lst, ref):
+ if sys.version_info[0] < 3: # pragma: no cover
+ self.assert_(hasattr(iter, 'next'))
+ else: # pragma: no cover
+ self.assert_(hasattr(iter, '__next__'))
+ self.assert_(hasattr(iter, '__iter__'))
+ x = list(iter)
+ self.assert_(set(x)==set(lst)==set(ref))
+ check_iterandlist(iter(d.keys()), list(d.keys()),
+ self.reference.keys())
+ check_iterandlist(iter(d), list(d.keys()), self.reference.keys())
+ check_iterandlist(iter(d.values()), list(d.values()),
+ self.reference.values())
+ check_iterandlist(iter(d.items()), list(d.items()),
+ self.reference.items())
+ #get
+ key, value = next(iter(d.items()))
+ knownkey, knownvalue = next(iter(self.other.items()))
+ self.assertEqual(d.get(key, knownvalue), value)
+ self.assertEqual(d.get(knownkey, knownvalue), knownvalue)
+ self.failIf(knownkey in d)
+
+ def test_write(self):
+ # Test for write operations on mapping
+ p = self._empty_mapping()
+ #Indexing
+ for key, value in self.reference.items():
+ p[key] = value
+ self.assertEqual(p[key], value)
+ for key in self.reference.keys():
+ del p[key]
+ self.failUnlessRaises(KeyError, lambda:p[key])
+ p = self._empty_mapping()
+ #update
+ p.update(self.reference)
+ self.assertEqual(dict(p), self.reference)
+ items = list(p.items())
+ p = self._empty_mapping()
+ p.update(items)
+ self.assertEqual(dict(p), self.reference)
+ d = self._full_mapping(self.reference)
+ #setdefault
+ key, value = next(iter(d.items()))
+ knownkey, knownvalue = next(iter(self.other.items()))
+ self.assertEqual(d.setdefault(key, knownvalue), value)
+ self.assertEqual(d[key], value)
+ self.assertEqual(d.setdefault(knownkey, knownvalue), knownvalue)
+ self.assertEqual(d[knownkey], knownvalue)
+ #pop
+ self.assertEqual(d.pop(knownkey), knownvalue)
+ self.failIf(knownkey in d)
+ self.assertRaises(KeyError, d.pop, knownkey)
+ default = 909
+ d[knownkey] = knownvalue
+ self.assertEqual(d.pop(knownkey, default), knownvalue)
+ self.failIf(knownkey in d)
+ self.assertEqual(d.pop(knownkey, default), default)
+ #popitem
+ key, value = d.popitem()
+ self.failIf(key in d)
+ self.assertEqual(value, self.reference[key])
+ p=self._empty_mapping()
+ self.assertRaises(KeyError, p.popitem)
+
+ def test_constructor(self):
+ self.assertEqual(self._empty_mapping(), self._empty_mapping())
+
+ def test_bool(self):
+ self.assert_(not self._empty_mapping())
+ self.assert_(self.reference)
+ self.assert_(bool(self._empty_mapping()) is False)
+ self.assert_(bool(self.reference) is True)
+
+ def test_keys(self):
+ d = self._empty_mapping()
+ self.assertEqual(list(d.keys()), [])
+ d = self.reference
+ self.assert_(list(self.inmapping.keys())[0] in d.keys())
+ self.assert_(list(self.other.keys())[0] not in d.keys())
+ self.assertRaises(TypeError, d.keys, None)
+
+ def test_values(self):
+ d = self._empty_mapping()
+ self.assertEqual(list(d.values()), [])
+
+ self.assertRaises(TypeError, d.values, None)
+
+ def test_items(self):
+ d = self._empty_mapping()
+ self.assertEqual(list(d.items()), [])
+
+ self.assertRaises(TypeError, d.items, None)
+
+ def test_len(self):
+ d = self._empty_mapping()
+ self.assertEqual(len(d), 0)
+
+ def test_getitem(self):
+ d = self.reference
+ self.assertEqual(d[list(self.inmapping.keys())[0]],
+ list(self.inmapping.values())[0])
+
+ self.assertRaises(TypeError, d.__getitem__)
+
+ def test_update(self):
+ # mapping argument
+ d = self._empty_mapping()
+ d.update(self.other)
+ self.assertEqual(list(d.items()), list(self.other.items()))
+
+ # No argument
+ d = self._empty_mapping()
+ d.update()
+ self.assertEqual(d, self._empty_mapping())
+
+ # item sequence
+ d = self._empty_mapping()
+ d.update(self.other.items())
+ self.assertEqual(list(d.items()), list(self.other.items()))
+
+ # Iterator
+ d = self._empty_mapping()
+ d.update(self.other.items())
+ self.assertEqual(list(d.items()), list(self.other.items()))
+
+ # FIXME: Doesn't work with UserDict
+ # self.assertRaises((TypeError, AttributeError), d.update, None)
+ self.assertRaises((TypeError, AttributeError), d.update, 42)
+
+ outerself = self
+ class SimpleUserDict:
+ def __init__(self):
+ self.d = outerself.reference
+ def keys(self):
+ return self.d.keys()
+ def __getitem__(self, i):
+ return self.d[i]
+ d.clear()
+ d.update(SimpleUserDict())
+ i1 = sorted(d.items())
+ i2 = sorted(self.reference.items())
+ self.assertEqual(i1, i2)
+
+ class Exc(Exception): pass
+
+ d = self._empty_mapping()
+ class FailingUserDict:
+ def keys(self):
+ raise Exc
+ self.assertRaises(Exc, d.update, FailingUserDict())
+
+ d.clear()
+
+ 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
+ else: # pragma: no cover
+ raise StopIteration
+ next = __next__
+ return BogonIter()
+ def __getitem__(self, key):
+ raise Exc
+ self.assertRaises(Exc, d.update, FailingUserDict())
+
+ d = self._empty_mapping()
+ class badseq(object):
+ def __iter__(self):
+ return self
+ def __next__(self):
+ raise Exc()
+ next = __next__
+
+ self.assertRaises(Exc, d.update, badseq())
+
+ self.assertRaises(ValueError, d.update, [(1, 2, 3)])
+
+ # no test_fromkeys or test_copy as both os.environ and selves don't support it
+
+ def test_get(self):
+ d = self._empty_mapping()
+ self.assert_(d.get(list(self.other.keys())[0]) is None)
+ self.assertEqual(d.get(list(self.other.keys())[0], 3), 3)
+ d = self.reference
+ self.assert_(d.get(list(self.other.keys())[0]) is None)
+ self.assertEqual(d.get(list(self.other.keys())[0], 3), 3)
+ self.assertEqual(d.get(list(self.inmapping.keys())[0]),
+ list(self.inmapping.values())[0])
+ self.assertEqual(d.get(list(self.inmapping.keys())[0], 3),
+ list(self.inmapping.values())[0])
+ self.assertRaises(TypeError, d.get)
+ self.assertRaises(TypeError, d.get, None, None, None)
+
+ def test_setdefault(self):
+ d = self._empty_mapping()
+ self.assertRaises(TypeError, d.setdefault)
+
+ def test_popitem(self):
+ d = self._empty_mapping()
+ self.assertRaises(KeyError, d.popitem)
+ self.assertRaises(TypeError, d.popitem, 42)
+
+ def test_pop(self):
+ d = self._empty_mapping()
+ k, v = list(self.inmapping.items())[0]
+ d[k] = v
+ self.assertRaises(KeyError, d.pop, list(self.other.keys())[0])
+
+ self.assertEqual(d.pop(k), v)
+ self.assertEqual(len(d), 0)
+
+ self.assertRaises(KeyError, d.pop, k)
+
+
+class TestMappingProtocol(BasicTestMappingProtocol):
+ def test_constructor(self):
+ BasicTestMappingProtocol.test_constructor(self)
+ self.assert_(self._empty_mapping() is not self._empty_mapping())
+ self.assertEqual(self.type2test(x=1, y=2), self._full_mapping({"x": 1, "y": 2}))
+
+ def test_bool(self):
+ BasicTestMappingProtocol.test_bool(self)
+ self.assert_(not self._empty_mapping())
+ self.assert_(self._full_mapping({"x": "y"}))
+ self.assert_(bool(self._empty_mapping()) is False)
+ self.assert_(bool(self._full_mapping({"x": "y"})) is True)
+
+ def test_keys(self):
+ BasicTestMappingProtocol.test_keys(self)
+ d = self._empty_mapping()
+ self.assertEqual(list(d.keys()), [])
+ d = self._full_mapping({'a': 1, 'b': 2})
+ k = d.keys()
+ self.assert_('a' in k)
+ self.assert_('b' in k)
+ self.assert_('c' not in k)
+
+ def test_values(self):
+ BasicTestMappingProtocol.test_values(self)
+ d = self._full_mapping({1:2})
+ self.assertEqual(list(d.values()), [2])
+
+ def test_items(self):
+ BasicTestMappingProtocol.test_items(self)
+
+ d = self._full_mapping({1:2})
+ self.assertEqual(list(d.items()), [(1, 2)])
+
+ def test_contains(self):
+ d = self._empty_mapping()
+ self.assert_(not ('a' in d))
+ self.assert_('a' not in d)
+ d = self._full_mapping({'a': 1, 'b': 2})
+ self.assert_('a' in d)
+ self.assert_('b' in d)
+ self.assert_('c' not in d)
+
+ self.assertRaises(TypeError, d.__contains__)
+
+ def test_len(self):
+ BasicTestMappingProtocol.test_len(self)
+ d = self._full_mapping({'a': 1, 'b': 2})
+ self.assertEqual(len(d), 2)
+
+ def test_getitem(self):
+ BasicTestMappingProtocol.test_getitem(self)
+ d = self._full_mapping({'a': 1, 'b': 2})
+ self.assertEqual(d['a'], 1)
+ self.assertEqual(d['b'], 2)
+ d['c'] = 3
+ d['a'] = 4
+ self.assertEqual(d['c'], 3)
+ self.assertEqual(d['a'], 4)
+ del d['b']
+ self.assertEqual(d, self._full_mapping({'a': 4, 'c': 3}))
+
+ self.assertRaises(TypeError, d.__getitem__)
+
+ def test_clear(self):
+ d = self._full_mapping({1:1, 2:2, 3:3})
+ d.clear()
+ self.assertEqual(d, self._full_mapping({}))
+
+ self.assertRaises(TypeError, d.clear, None)
+
+ def test_update(self):
+ BasicTestMappingProtocol.test_update(self)
+ # mapping argument
+ d = self._empty_mapping()
+ d.update({1:100})
+ d.update({2:20})
+ d.update({1:1, 2:2, 3:3})
+ self.assertEqual(d, self._full_mapping({1:1, 2:2, 3:3}))
+
+ # no argument
+ d.update()
+ self.assertEqual(d, self._full_mapping({1:1, 2:2, 3:3}))
+
+ # keyword arguments
+ d = self._empty_mapping()
+ d.update(x=100)
+ d.update(y=20)
+ d.update(x=1, y=2, z=3)
+ self.assertEqual(d, self._full_mapping({"x":1, "y":2, "z":3}))
+
+ # item sequence
+ d = self._empty_mapping()
+ d.update([("x", 100), ("y", 20)])
+ self.assertEqual(d, self._full_mapping({"x":100, "y":20}))
+
+ # Both item sequence and keyword arguments
+ d = self._empty_mapping()
+ d.update([("x", 100), ("y", 20)], x=1, y=2)
+ self.assertEqual(d, self._full_mapping({"x":1, "y":2}))
+
+ # iterator
+ d = self._full_mapping({1:3, 2:4})
+ d.update(self._full_mapping({1:2, 3:4, 5:6}).items())
+ self.assertEqual(d, self._full_mapping({1:2, 2:4, 3:4, 5:6}))
+
+ 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, self._full_mapping({1:1, 2:2, 3:3}))
+
+ def test_fromkeys(self):
+ self.assertEqual(self.type2test.fromkeys('abc'), self._full_mapping({'a':None, 'b':None, 'c':None}))
+ d = self._empty_mapping()
+ self.assert_(not(d.fromkeys('abc') is d))
+ self.assertEqual(d.fromkeys('abc'), self._full_mapping({'a':None, 'b':None, 'c':None}))
+ self.assertEqual(d.fromkeys((4,5),0), self._full_mapping({4:0, 5:0}))
+ self.assertEqual(d.fromkeys([]), self._full_mapping({}))
+ def g():
+ yield 1
+ self.assertEqual(d.fromkeys(g()), self._full_mapping({1:None}))
+ self.assertRaises(TypeError, {}.fromkeys, 3)
+ class dictlike(self.type2test): pass
+ self.assertEqual(dictlike.fromkeys('a'), self._full_mapping({'a':None}))
+ self.assertEqual(dictlike().fromkeys('a'), self._full_mapping({'a':None}))
+ self.assert_(dictlike.fromkeys('a').__class__ is dictlike)
+ self.assert_(dictlike().fromkeys('a').__class__ is dictlike)
+ # FIXME: the following won't work with UserDict, because it's an old style class
+ # self.assert_(type(dictlike.fromkeys('a')) is dictlike)
+ class mydict(self.type2test):
+ def __new__(cls):
+ return UserDict()
+ ud = mydict.fromkeys('ab')
+ self.assertEqual(ud, {'a':None, 'b':None})
+ # FIXME: the following won't work with UserDict, because it's an old style class
+ # self.assert_(isinstance(ud, collections.UserDict))
+ self.assertRaises(TypeError, dict.fromkeys)
+
+ class Exc(Exception): pass
+
+ class baddict1(self.type2test):
+ def __init__(self):
+ raise Exc()
+
+ self.assertRaises(Exc, baddict1.fromkeys, [1])
+
+ class BadSeq(object):
+ def __iter__(self):
+ return self
+ def __next__(self):
+ raise Exc()
+ next = __next__
+
+ self.assertRaises(Exc, self.type2test.fromkeys, BadSeq())
+
+ class baddict2(self.type2test):
+ def __setitem__(self, key, value):
+ raise Exc()
+
+ self.assertRaises(Exc, baddict2.fromkeys, [1])
+
+ def test_copy(self):
+ d = self._full_mapping({1:1, 2:2, 3:3})
+ self.assertEqual(d.copy(), self._full_mapping({1:1, 2:2, 3:3}))
+ d = self._empty_mapping()
+ self.assertEqual(d.copy(), d)
+ self.assert_(isinstance(d.copy(), d.__class__))
+ self.assertRaises(TypeError, d.copy, None)
+
+ def test_get(self):
+ BasicTestMappingProtocol.test_get(self)
+ d = self._empty_mapping()
+ self.assert_(d.get('c') is None)
+ self.assertEqual(d.get('c', 3), 3)
+ d = self._full_mapping({'a' : 1, 'b' : 2})
+ self.assert_(d.get('c') is None)
+ self.assertEqual(d.get('c', 3), 3)
+ self.assertEqual(d.get('a'), 1)
+ self.assertEqual(d.get('a', 3), 1)
+
+ def test_setdefault(self):
+ BasicTestMappingProtocol.test_setdefault(self)
+ d = self._empty_mapping()
+ self.assert_(d.setdefault('key0') is None)
+ d.setdefault('key0', [])
+ self.assert_(d.setdefault('key0') is None)
+ d.setdefault('key', []).append(3)
+ self.assertEqual(d['key'][0], 3)
+ d.setdefault('key', []).append(4)
+ self.assertEqual(len(d['key']), 2)
+
+ def test_popitem(self):
+ BasicTestMappingProtocol.test_popitem(self)
+ 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 = self._empty_mapping()
+ b = self._empty_mapping()
+ 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.assert_(not(copymode < 0 and ta != tb))
+ self.assert_(not a)
+ self.assert_(not b)
+
+ def test_pop(self):
+ BasicTestMappingProtocol.test_pop(self)
+
+ # Tests for pop with specified key
+ d = self._empty_mapping()
+ k, v = 'abc', 'def'
+
+ # verify longs/ints get same value when key > 32 bits (for 64-bit archs)
+ # see SF bug #689659
+ x = 4503599627370496
+ y = 4503599627370496
+ h = self._full_mapping({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)
+
+
+class TestHashMappingProtocol(TestMappingProtocol):
+
+ def test_getitem(self):
+ TestMappingProtocol.test_getitem(self)
+ class Exc(Exception): pass
+
+ class BadEq(object):
+ def __eq__(self, other): # pragma: no cover
+ raise Exc()
+ def __hash__(self):
+ return 24
+
+ d = self._empty_mapping()
+ d[BadEq()] = 42
+ self.assertRaises(KeyError, d.__getitem__, 23)
+
+ class BadHash(object):
+ fail = False
+ def __hash__(self):
+ if self.fail:
+ raise Exc()
+ else:
+ return 42
+
+ d = self._empty_mapping()
+ x = BadHash()
+ d[x] = 42
+ x.fail = True
+ self.assertRaises(Exc, d.__getitem__, x)
+
+ def test_fromkeys(self):
+ TestMappingProtocol.test_fromkeys(self)
+ class mydict(self.type2test):
+ def __new__(cls):
+ return UserDict()
+ ud = mydict.fromkeys('ab')
+ self.assertEqual(ud, {'a':None, 'b':None})
+ self.assert_(isinstance(ud, UserDict))
+
+ def test_pop(self):
+ TestMappingProtocol.test_pop(self)
+
+ class Exc(Exception): pass
+
+ class BadHash(object):
+ fail = False
+ def __hash__(self):
+ if self.fail:
+ raise Exc()
+ else:
+ return 42
+
+ d = self._empty_mapping()
+ x = BadHash()
+ d[x] = 42
+ x.fail = True
+ self.assertRaises(Exc, d.pop, x)
+
+ def test_mutatingiteration(self): # pragma: no cover
+ d = self._empty_mapping()
+ d[1] = 1
+ try:
+ for i in d:
+ d[i+1] = 1
+ except RuntimeError:
+ pass
+ else:
+ self.fail("changing dict size during iteration doesn't raise Error")
+
+ def test_repr(self): # pragma: no cover
+ d = self._empty_mapping()
+ self.assertEqual(repr(d), '{}')
+ d[1] = 2
+ self.assertEqual(repr(d), '{1: 2}')
+ d = self._empty_mapping()
+ d[1] = d
+ self.assertEqual(repr(d), '{1: {...}}')
+
+ class Exc(Exception): pass
+
+ class BadRepr(object):
+ def __repr__(self):
+ raise Exc()
+
+ d = self._full_mapping({1: BadRepr()})
+ self.assertRaises(Exc, repr, d)
+
+ def test_eq(self):
+ self.assertEqual(self._empty_mapping(), self._empty_mapping())
+ self.assertEqual(self._full_mapping({1: 2}),
+ self._full_mapping({1: 2}))
+
+ class Exc(Exception): pass
+
+ class BadCmp(object):
+ def __eq__(self, other):
+ raise Exc()
+ def __hash__(self):
+ return 1
+
+ d1 = self._full_mapping({BadCmp(): 1})
+ d2 = self._full_mapping({1: 1})
+ self.assertRaises(Exc, lambda: BadCmp()==1)
+ #self.assertRaises(Exc, lambda: d1==d2)
+
+ def test_setdefault(self):
+ TestMappingProtocol.test_setdefault(self)
+
+ class Exc(Exception): pass
+
+ class BadHash(object):
+ fail = False
+ def __hash__(self):
+ if self.fail:
+ raise Exc()
+ else:
+ return 42
+
+ d = self._empty_mapping()
+ x = BadHash()
+ d[x] = 42
+ x.fail = True
+ self.assertRaises(Exc, d.setdefault, x, [])
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