def METHOD_NAME(flask_client):
    # Create user
    user = login(flask_client)
    # Check start state
    assert len(Alias.filter_by(user_id=user.id).all()) == 1  # Onboarding alias
    alias_data = [
        "alias,note",
        "ebay@my-domain.com,Used on eBay",
        'facebook@my-domain.com,"Used on Facebook, Instagram."',
    ]
    file = File.create(path=f"/{random_token()}", commit=True)
    batch_import = BatchImport.create(user_id=user.id, file_id=file.id, commit=True)
    import_from_csv(batch_import, user, alias_data)
    # Should have failed to import anything new because my-domain.com isn't registered
    assert len(Alias.filter_by(user_id=user.id).all()) == 1  # +0