Lib/test/test_userdict.py

   1 # Check every path through every method of UserDict
   2
   3 from UserDict import UserDict
   4
   5 d0 = {}
   6 d1 = {"one": 1}
   7 d2 = {"one": 1, "two": 2}
   8
   9 # Test constructors
  10
  11 u = UserDict()
  12 u0 = UserDict(d0)
  13 u1 = UserDict(d1)
  14 u2 = UserDict(d2)
  15
  16 uu = UserDict(u)
  17 uu0 = UserDict(u0)
  18 uu1 = UserDict(u1)
  19 uu2 = UserDict(u2)
  20
  21 # Test __repr__
  22
  23 assert str(u0) == str(d0)
  24 assert repr(u1) == repr(d1)
  25 assert `u2` == `d2`
  26
  27 # Test __cmp__ and __len__
  28
  29 all = [d0, d1, d2, u, u0, u1, u2, uu, uu0, uu1, uu2]
  30 for a in all:
  31     for b in all:
  32         assert cmp(a, b) == cmp(len(a), len(b))
  33
  34 # Test __getitem__
  35
  36 assert u2["one"] == 1
  37 try:
  38     u1["two"]
  39 except KeyError:
  40     pass
  41 else:
  42     assert 0, "u1['two'] shouldn't exist"
  43
  44 # Test __setitem__
  45
  46 u3 = UserDict(u2)
  47 u3["two"] = 2
  48 u3["three"] = 3
  49
  50 # Test __delitem__
  51
  52 del u3["three"]
  53 try:
  54     del u3["three"]
  55 except KeyError:
  56     pass
  57 else:
  58     assert 0, "u3['three'] shouldn't exist"
  59
  60 # Test clear
  61
  62 u3.clear()
  63 assert u3 == {}
  64
  65 # Test copy()
  66
  67 u2a = u2.copy()
  68 assert u2a == u2
  69
  70 class MyUserDict(UserDict):
  71     def display(self): print self
  72
  73 m2 = MyUserDict(u2)
  74 m2a = m2.copy()
  75 assert m2a == m2
  76
  77 # Test keys, items, values
  78
  79 assert u2.keys() == d2.keys()
  80 assert u2.items() == d2.items()
  81 assert u2.values() == d2.values()
  82
  83 # Test has_key
  84
  85 for i in u2.keys():
  86     assert u2.has_key(i) == 1
  87     assert u1.has_key(i) == d1.has_key(i)
  88     assert u0.has_key(i) == d0.has_key(i)
  89
  90 # Test update
  91
  92 t = UserDict()
  93 t.update(u2)
  94 assert t == u2
  95
  96 # Test get
  97
  98 for i in u2.keys():
  99     assert u2.get(i) == u2[i]
 100     assert u1.get(i) == d1.get(i)
 101     assert u0.get(i) == d0.get(i)