You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.

54 lines
1.3 KiB

defmodule Frenzy.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,
it cannot be async. For this reason, every test runs
inside a transaction which is reset at the beginning
of the test unless the test case is marked as async.
use ExUnit.CaseTemplate
using do
quote do
alias Frenzy.Repo
import Ecto
import Ecto.Changeset
import Ecto.Query
import Frenzy.DataCase
setup tags do
:ok = Ecto.Adapters.SQL.Sandbox.checkout(Frenzy.Repo)
unless tags[:async] do
Ecto.Adapters.SQL.Sandbox.mode(Frenzy.Repo, {:shared, self()})
@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} ->
Enum.reduce(opts, message, fn {key, value}, acc ->
String.replace(acc, "%{#{key}}", to_string(value))