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51 lines
1.5 KiB
Elixir
51 lines
1.5 KiB
Elixir
defmodule Domain.DataCase do
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@moduledoc """
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This module defines the setup for tests requiring
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access to the application's data layer.
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You may define functions here to be used as helpers in
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your tests.
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Finally, if the test case interacts with the database,
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we enable the SQL sandbox, so changes done to the database
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are reverted at the end of every test. If you are using
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PostgreSQL, you can even run database tests asynchronously
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by setting `use Domain.DataCase, async: true`, although
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this option is not recommended for other databases.
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"""
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use ExUnit.CaseTemplate
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use Domain.CaseTemplate
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using do
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quote do
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import Ecto
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import Ecto.Changeset
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import Domain.DataCase
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alias Domain.Repo
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alias Domain.Fixtures
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alias Domain.Mocks
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end
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end
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def assert_datetime_diff(%DateTime{} = datetime1, %DateTime{} = datetime2, is, leeway \\ 5) do
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assert DateTime.diff(datetime1, datetime2, :second) in (is - leeway)..(is + leeway)
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end
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@doc """
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A helper that transforms changeset errors into a map of messages.
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assert {:error, changeset} = Accounts.create_user(%{password: "short"})
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assert "password is too short" in errors_on(changeset).password
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assert %{password: ["password is too short"]} = errors_on(changeset)
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"""
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def errors_on(changeset) do
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Ecto.Changeset.traverse_errors(changeset, fn {message, opts} ->
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Regex.replace(~r"%{(\w+)}", message, fn _, key ->
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opts |> Keyword.get(String.to_existing_atom(key), key) |> to_string()
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end)
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end)
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end
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end
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