def METHOD_NAME(self):
    self.source_type = SourceSystemTypeFactory(name="nav")
    self.source1_user = SourceUserFactory(username="nav1")
    self.source1 = SourceSystemFactory(name="NAV 1", type=self.source_type, user=self.source1_user)
    self.source2_user = SourceUserFactory(username="nav2")
    self.source2 = SourceSystemFactory(name="NAV 2", type=self.source_type, user=self.source2_user)