| defmodule Medicode.DataCase do |
| @moduledoc """ |
| This module defines the setup for tests requiring |
| access to the application's data layer. |
| |
| You may define functions here to be used as helpers in |
| your tests. |
| |
| Finally, if the test case interacts with the database, |
| we enable the SQL sandbox, so changes done to the database |
| are reverted at the end of every test. If you are using |
| PostgreSQL, you can even run database tests asynchronously |
| by setting `use Medicode.DataCase, async: true`, although |
| this option is not recommended for other databases. |
| """ |
|
|
| use ExUnit.CaseTemplate |
|
|
| using do |
| quote do |
| alias Medicode.Repo |
|
|
| import Ecto |
| import Ecto.Changeset |
| import Ecto.Query |
| import Medicode.DataCase |
| end |
| end |
|
|
| setup tags do |
| Medicode.DataCase.setup_sandbox(tags) |
| :ok |
| end |
|
|
| @doc """ |
| Sets up the sandbox based on the test tags. |
| """ |
| def setup_sandbox(tags) do |
| pid = |
| Ecto.Adapters.SQL.Sandbox.start_owner!(Medicode.Repo, shared: not tags[:async]) |
|
|
| on_exit(fn -> Ecto.Adapters.SQL.Sandbox.stop_owner(pid) end) |
| end |
|
|
| @doc """ |
| A helper that transforms changeset errors into a map of messages. |
| |
| assert {:error, changeset} = Accounts.create_user(%{password: "short"}) |
| assert "password is too short" in errors_on(changeset).password |
| assert %{password: ["password is too short"]} = errors_on(changeset) |
| |
| """ |
| def errors_on(changeset) do |
| Ecto.Changeset.traverse_errors(changeset, fn {message, opts} -> |
| Regex.replace(~r"%{(\w+)}", message, fn _, key -> |
| opts |> Keyword.get(String.to_existing_atom(key), key) |> to_string() |
| end) |
| end) |
| end |
| end |
|
|
