def METHOD_NAME(self, svc):
    identity_data = [
        {"provider": "someprovider", "provider_unique_id": 1},
        {"provider": "someotherprovider", "provider_unique_id": "394ffa3"},
    ]
    user = svc.signup(username="foo", email="foo@bar.com", identities=identity_data)
    assert len(user.identities) == 2