SF #662923

Add support for the iterator and mapping protocols.
For Py2.3, this was done for shelve, dumbdbm and other mapping objects, but
not for bsddb and dbhash which were inadvertently missed.

Lib/test/test_bsddb.py

@@ -20,12 +20,24 @@ def test(openmethod, what, ondisk=1):
     verify(f.keys() == [])
     if verbose:
         print 'creation...'
-    f['0'] = ''
-    f['a'] = 'Guido'
-    f['b'] = 'van'
-    f['c'] = 'Rossum'
-    f['d'] = 'invented'
-    f['f'] = 'Python'
+    keys = ['0', 'a', 'b', 'c', 'd', 'e', 'f']
+    values = ['', 'Guido', 'van', 'Rossum', 'invented', 'Python']
+    items = zip(keys, values)
+    for k, v in items:
+        f[k] = v
+
+    # test mapping iteration methods
+    from sets import Set
+    def verifyset(s1, s2):
+        verify(Set(s1) == Set(s2))
+    verify(keys, f.keys())
+    verify(values, f.values())
+    verify(items, f.items())
+    verify(keys, f)
+    verify(keys, f.iterkeys())
+    verify(values, f.itervalues())
+    verify(items, f.iteritems())
+
     if verbose:
         print '%s %s %s' % (f['a'], f['b'], f['c'])