Test suite for UserDict
diff --git a/Lib/test/test_userdict.py b/Lib/test/test_userdict.py
new file mode 100644
index 0000000..63632f7
--- /dev/null
+++ b/Lib/test/test_userdict.py
@@ -0,0 +1,101 @@
+# Check every path through every method of UserDict
+
+from UserDict import UserDict
+
+d0 = {}
+d1 = {"one": 1}
+d2 = {"one": 1, "two": 2}
+
+# Test constructors
+
+u = UserDict()
+u0 = UserDict(d0)
+u1 = UserDict(d1)
+u2 = UserDict(d2)
+
+uu = UserDict(u)
+uu0 = UserDict(u0)
+uu1 = UserDict(u1)
+uu2 = UserDict(u2)
+
+# Test __repr__
+
+assert str(u0) == str(d0)
+assert repr(u1) == repr(d1)
+assert `u2` == `d2`
+
+# Test __cmp__ and __len__
+
+all = [d0, d1, d2, u, u0, u1, u2, uu, uu0, uu1, uu2]
+for a in all:
+ for b in all:
+ assert cmp(a, b) == cmp(len(a), len(b))
+
+# Test __getitem__
+
+assert u2["one"] == 1
+try:
+ u1["two"]
+except KeyError:
+ pass
+else:
+ assert 0, "u1['two'] shouldn't exist"
+
+# Test __setitem__
+
+u3 = UserDict(u2)
+u3["two"] = 2
+u3["three"] = 3
+
+# Test __delitem__
+
+del u3["three"]
+try:
+ del u3["three"]
+except KeyError:
+ pass
+else:
+ assert 0, "u3['three'] shouldn't exist"
+
+# Test clear
+
+u3.clear()
+assert u3 == {}
+
+# Test copy()
+
+u2a = u2.copy()
+assert u2a == u2
+
+class MyUserDict(UserDict):
+ def display(self): print self
+
+m2 = MyUserDict(u2)
+m2a = m2.copy()
+assert m2a == m2
+
+# Test keys, items, values
+
+assert u2.keys() == d2.keys()
+assert u2.items() == d2.items()
+assert u2.values() == d2.values()
+
+# Test has_key
+
+for i in u2.keys():
+ assert u2.has_key(i) == 1
+ assert u1.has_key(i) == d1.has_key(i)
+ assert u0.has_key(i) == d0.has_key(i)
+
+# Test update
+
+t = UserDict()
+t.update(u2)
+assert t == u2
+
+# Test get
+
+for i in u2.keys():
+ assert u2.get(i) == u2[i]
+ assert u1.get(i) == d1.get(i)
+ assert u0.get(i) == d0.get(i)