test_operations
3. Operations
XXX Mostly not yet implemented
3.1 Dictionary lookups fail if __cmp__() raises an exception
raising error
d[x2] = 2: caught the RuntimeError outside
raising error
z = d[x2]: caught the RuntimeError outside
raising error
x2 in d: caught the RuntimeError outside
raising error
d.has_key(x2): caught the RuntimeError outside
raising error
d.get(x2): caught the RuntimeError outside
raising error
d.setdefault(x2, 42): caught the RuntimeError outside
raising error
d.pop(x2): caught the RuntimeError outside
raising error
d.update({x2: 2}): caught the RuntimeError outside
resize bugs not triggered.