Testing

Aurora Meter works with the standard Ecto.Adapters.SQL.Sandbox. Because the flusher and broadcaster are background processes, use shared sandbox mode (or allowances) in tests that flush.

defmodule MyApp.DataCase do
  use ExUnit.CaseTemplate

  setup tags do
    pid = Ecto.Adapters.SQL.Sandbox.start_owner!(MyApp.Repo, shared: not tags[:async])
    on_exit(fn -> Ecto.Adapters.SQL.Sandbox.stop_owner(pid) end)
    :ok
  end
end

Determinism

Set large :flush_interval / :broadcast_interval in test config so the timers don't fire mid-test, and drive them explicitly:
```
AuroraMeter.Flusher.flush()          # {:ok, persisted_count}
AuroraMeter.Broadcaster.broadcast_now()
```
Counters live in a shared ETS table. Give each test a unique tenant key so tests stay isolated and can run async: true:
```
tenant = "org_#{System.unique_integer([:positive])}"
```

Asserting live updates

AuroraMeter.LiveView.subscribe(tenant)
AuroraMeter.track(tenant, :ai_generations, 3)
AuroraMeter.Broadcaster.broadcast_now()
assert_receive {:aurora_meter, :usage, %{feature: :ai_generations, value: 3}}

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