def METHOD_NAME(
    mocked_notify, user_api_client, channel_PLN
):
    # given
    redirect_url = "https://www.example.com"
    variables = {
        "redirectUrl": redirect_url,
        "channel": channel_PLN.slug,
    }
    # when
    response = user_api_client.post_graphql(SEND_CONFIRMATION_EMAIL_MUTATION, variables)
    content = get_graphql_content(response)
    # then
    errors = content["data"]["sendConfirmationEmail"]["errors"]
    assert errors == [
        {
            "field": None,
            "message": "User is already confirmed",
            "code": SendConfirmationEmailErrorCode.ACCOUNT_CONFIRMED.name,
        }
    ]
    mocked_notify.assert_not_called()