pleroma/test/healthcheck_test.exs

defmodule Pleroma.HealthcheckTest do
  use Pleroma.DataCase
  alias Pleroma.Healthcheck

  test "system_info/0" do
    result = Healthcheck.system_info() |> Map.from_struct()

    assert Map.keys(result) == [:active, :healthy, :idle, :memory_used, :pool_size]
  end

  describe "check_health/1" do
    test "pool size equals active connections" do
      result = Healthcheck.check_health(%Healthcheck{pool_size: 10, active: 10})
      refute result.healthy
    end

    test "chech_health/1" do
      result = Healthcheck.check_health(%Healthcheck{pool_size: 10, active: 9})
      assert result.healthy
    end
  end
end