Phoenix skeleton

test/support/channel_case.ex

+defmodule Pleroma.Web.ChannelCase do
+  @moduledoc """
+  This module defines the test case to be used by
+  channel tests.
+
+  Such tests rely on `Phoenix.ChannelTest` and also
+  import other functionality to make it easier
+  to build common datastructures and query the data layer.
+
+  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
+      # Import conveniences for testing with channels
+      use Phoenix.ChannelTest
+
+      # The default endpoint for testing
+      @endpoint Pleroma.Web.Endpoint
+    end
+  end
+
+
+  setup tags do
+    :ok = Ecto.Adapters.SQL.Sandbox.checkout(Pleroma.Repo)
+    unless tags[:async] do
+      Ecto.Adapters.SQL.Sandbox.mode(Pleroma.Repo, {:shared, self()})
+    end
+    :ok
+  end
+
+end

test/support/conn_case.ex

+defmodule Pleroma.Web.ConnCase do
+  @moduledoc """
+  This module defines the test case to be used by
+  tests that require setting up a connection.
+
+  Such tests rely on `Phoenix.ConnTest` and also
+  import other functionality to make it easier
+  to build common datastructures and query the data layer.
+
+  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
+      # Import conveniences for testing with connections
+      use Phoenix.ConnTest
+      import Pleroma.Web.Router.Helpers
+
+      # The default endpoint for testing
+      @endpoint Pleroma.Web.Endpoint
+    end
+  end
+
+
+  setup tags do
+    :ok = Ecto.Adapters.SQL.Sandbox.checkout(Pleroma.Repo)
+    unless tags[:async] do
+      Ecto.Adapters.SQL.Sandbox.mode(Pleroma.Repo, {:shared, self()})
+    end
+    {:ok, conn: Phoenix.ConnTest.build_conn()}
+  end
+
+end

test/support/data_case.ex

+defmodule Pleroma.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 Pleroma.Repo
+
+      import Ecto
+      import Ecto.Changeset
+      import Ecto.Query
+      import Pleroma.DataCase
+    end
+  end
+
+  setup tags do
+    :ok = Ecto.Adapters.SQL.Sandbox.checkout(Pleroma.Repo)
+
+    unless tags[:async] do
+      Ecto.Adapters.SQL.Sandbox.mode(Pleroma.Repo, {:shared, self()})
+    end
+
+    :ok
+  end
+
+  @doc """
+  A helper that transform changeset errors to a map of messages.
+
+      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))
+      end)
+    end)
+  end
+end

test/test_helper.exs

+ExUnit.start()
+
+Ecto.Adapters.SQL.Sandbox.mode(Pleroma.Repo, :manual)
+

test/web/views/error_view_test.exs

+defmodule Pleroma.Web.ErrorViewTest do
+  use Pleroma.Web.ConnCase, async: true
+
+  # Bring render/3 and render_to_string/3 for testing custom views
+  import Phoenix.View
+
+  test "renders 404.json" do
+    assert render(Pleroma.Web.ErrorView, "404.json", []) ==
+           %{errors: %{detail: "Page not found"}}
+  end
+
+  test "render 500.json" do
+    assert render(Pleroma.Web.ErrorView, "500.json", []) ==
+           %{errors: %{detail: "Internal server error"}}
+  end
+
+  test "render any other" do
+    assert render(Pleroma.Web.ErrorView, "505.json", []) ==
+           %{errors: %{detail: "Internal server error"}}
+  end
+end