After "mix phx.gen.json BiddingRounds BiddingRound bidding_rounds round_number:integer running:boolean --no-scope".

test/support/fixtures/bidding_rounds_fixtures.ex

@@ -0,0 +1,21 @@
+defmodule BeetRoundServer.BiddingRoundsFixtures do
+  @moduledoc """
+  This module defines test helpers for creating
+  entities via the `BeetRoundServer.BiddingRounds` context.
+  """
+
+  @doc """
+  Generate a bidding_round.
+  """
+  def bidding_round_fixture(attrs \\ %{}) do
+    {:ok, bidding_round} =
+      attrs
+      |> Enum.into(%{
+        round_number: 42,
+        running: true
+      })
+      |> BeetRoundServer.BiddingRounds.create_bidding_round()
+
+    bidding_round
+  end
+end