fix tests

config/test.exs

@@ -47,4 +47,5 @@ config :towerops, ToweropsWeb.Endpoint,
 config :towerops,
   ping_module: Towerops.Monitoring.PingMock,
   poller_module: Towerops.Snmp.PollerMock,
-  snmp_adapter: Towerops.Snmp.SnmpMock
+  snmp_adapter: Towerops.Snmp.SnmpMock,
+  sql_sandbox: true

lib/towerops/agents.ex

@@ -83,18 +83,20 @@ defmodule Towerops.Agents do
       {1, nil}
 
   """
-  def update_agent_token_heartbeat(agent_token_id, ip_address, metadata \\ %{}) do
+  def update_agent_token_heartbeat(agent_token_id, ip_address, metadata \\ nil) do
     now = DateTime.truncate(DateTime.utc_now(), :second)
 
+    # Only update metadata if explicitly provided (not nil and not empty)
+    updates =
+      case metadata do
+        nil -> [last_seen_at: now, last_ip: ip_address]
+        meta when map_size(meta) > 0 -> [last_seen_at: now, last_ip: ip_address, metadata: meta]
+        _ -> [last_seen_at: now, last_ip: ip_address]
+      end
+
     AgentToken
     |> where([t], t.id == ^agent_token_id)
-    |> Repo.update_all(
-      set: [
-        last_seen_at: now,
-        last_ip: ip_address,
-        metadata: metadata
-      ]
-    )
+    |> Repo.update_all(set: updates)
   end
 
   @doc """

lib/towerops_web/controllers/api/agent_controller.ex

@@ -77,11 +77,7 @@ defmodule ToweropsWeb.Api.AgentController do
     }
 
     # Update synchronously in the heartbeat endpoint
-    fn ->
-      Agents.update_agent_token_heartbeat(agent_token.id, ip, metadata)
-    end
-    |> Task.async()
-    |> Task.await()
+    Agents.update_agent_token_heartbeat(agent_token.id, ip, metadata)
 
     json(conn, %{status: "ok"})
   end

lib/towerops_web/plugs/agent_auth.ex

@@ -9,6 +9,7 @@ defmodule ToweropsWeb.Plugs.AgentAuth do
   import Phoenix.Controller
   import Plug.Conn
 
+  alias Ecto.Adapters.SQL.Sandbox
   alias Towerops.Agents
 
   @doc """
@@ -43,7 +44,14 @@ defmodule ToweropsWeb.Plugs.AgentAuth do
   defp update_heartbeat(conn, agent_token) do
     ip = to_string(:inet_parse.ntoa(conn.remote_ip))
 
+    parent = self()
+
     Task.start(fn ->
+      # Allow this task to use the test database sandbox
+      if Application.get_env(:towerops, :sql_sandbox) do
+        Sandbox.allow(Towerops.Repo, parent, self())
+      end
+
       Agents.update_agent_token_heartbeat(agent_token.id, ip)
     end)