test(support): add resp client and server test helpers

test/support/server_case.ex

@@ -0,0 +1,37 @@
+defmodule Excache.Test.ServerCase do
+  @moduledoc false
+
+  use ExUnit.CaseTemplate
+
+  using do
+    quote do
+      alias Excache.Test.RespClient, as: Client
+    end
+  end
+
+  setup do
+    snapshot = Path.join(File.cwd!(), "tmp/snapshot_#{System.unique_integer([:positive])}.bin")
+    aof = Path.join(File.cwd!(), "tmp/aof_#{System.unique_integer([:positive])}.bin")
+
+    Application.put_env(:excache, :snapshot_path, snapshot)
+    Application.put_env(:excache, :aof_path, aof)
+    Excache.Store.flushdb()
+    Excache.Aof.restart()
+
+    {:ok, acceptor} = Excache.Server.Acceptor.start_link(port: 0)
+    port = Excache.Server.Acceptor.port(acceptor)
+    conn = Excache.Test.RespClient.connect(port)
+
+    on_exit(fn ->
+      Excache.Test.RespClient.close(conn)
+      if Process.alive?(acceptor), do: GenServer.stop(acceptor)
+      File.rm(snapshot)
+      File.rm(aof)
+      Excache.Store.flushdb()
+      Application.delete_env(:excache, :snapshot_path)
+      Application.delete_env(:excache, :aof_path)
+    end)
+
+    %{conn: conn, port: port}
+  end
+end