blockscout/apps/explorer_web/test/support/feature_case.ex

defmodule ExplorerWeb.FeatureCase do
  use ExUnit.CaseTemplate

  using do
    quote do
      use Wallaby.DSL

      alias Explorer.Repo

      import Ecto
      import Ecto.Changeset
      import Ecto.Query
      import ExplorerWeb.Router.Helpers
      import Explorer.Factory
    end
  end

  setup tags do
    :ok = Ecto.Adapters.SQL.Sandbox.checkout(Explorer.Repo)

    unless tags[:async] do
      Ecto.Adapters.SQL.Sandbox.mode(Explorer.Repo, {:shared, self()})
    end

    metadata = Phoenix.Ecto.SQL.Sandbox.metadata_for(Explorer.Repo, self())
    {:ok, session} = Wallaby.start_session(metadata: metadata)
    {:ok, session: session}
  end
end