def METHOD_NAME(self, _mockProxyInfo):
    """Testing username attribute"""
    # the username is chaen
    self.assertTrue(not ProxyPlugin("username.in(toto)").eval())
    self.assertTrue(ProxyPlugin("username.not_in(toto)").eval())
    self.assertTrue(ProxyPlugin("username.in(toto, chaen)").eval())
    self.assertTrue(not ProxyPlugin("username.not_in(toto, chaen)").eval())
    # Testing some more formating with spaces and quotes
    self.assertTrue(not ProxyPlugin("username.in( toto )").eval())
    self.assertTrue(ProxyPlugin('username.not_in("toto")').eval())
    self.assertTrue(ProxyPlugin('username.in(toto,"chaen")').eval())
    self.assertTrue(not ProxyPlugin("username.not_in('toto' ,chaen)").eval())