Take 2 on handler fixtures

fixture.rb

require_relative "../../automated_init"

context "Handle Commands" do
  context "Added" do
    context "Writes Added event" do
      id = Controls::Account.id
      account = Controls::Account::New.example
      add = Controls::Commands::Add.example
      time = Controls::Time::Processed.example

      fixture = Fixtures::Handler.build(
        handler: Handlers::Commands,
        store_entity: account,
        set_now: time,
      )

      fixture.(add)

      fixture.assert_written(Messages::Events::Added) do |written|
        written.assert_follows(enable) do |follows|
          follows.assert_copies(
            :account_id, :currency,
            :name, :user, :time
          )

          follows.assert_message_sequence_set
        end

        written.assert_stream_name("account-#{id}")
        written.assert_expected_version(:no_stream)
        written.assert_value_set(processed_time: time)
      end
    end
  end
end