@property<EOL><INDENT>def call_url(self):<DEDENT>
return self.mock.call_args[<NUM_LIT:0>][<NUM_LIT:0>][<NUM_LIT:1>:]<EOL>
A shortcut to accessing the URL called on the underlying mock.  We
chop off the first character because our testing base_url has a leading
/ we don't want to see.