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My personal website at andyleclair.dev
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1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859defmodule Personal.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 Personal.DataCase, async: true`, although this option is not recommended for other databases. """
use ExUnit.CaseTemplate
using do quote do alias Personal.Repo
import Ecto import Ecto.Changeset import Ecto.Query import Personal.DataCase end end
setup tags do Personal.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!(Personal.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) endend