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muontrap

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muontrap test cgroup_test.exs
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test/cgroup_test.exs 

defmodule CgroupTest do

  use ExUnit.Case

  import MuonTrapTestHelpers



  @tag :cgroup

  test "cgroup gets created and removed on exit" do

    cgroup_path = random_cgroup_path()



    port =

      Port.open(

        {:spawn_executable, MuonTrap.muontrap_path()},

        args: ["-g", cgroup_path, "-c", "cpu", "./test/do_nothing.test"]

      )



    os_pid = os_pid(port)

    assert is_os_pid_around?(os_pid)

    assert cpu_cgroup_exists(cgroup_path)



    Port.close(port)



    wait_for_close_check()

    assert !is_os_pid_around?(os_pid)

    assert !cpu_cgroup_exists(cgroup_path)

  end



  @tag :cgroup

  test "cleans up after a forking process" do

    cgroup_path = random_cgroup_path()



    port =

      Port.open(

        {:spawn_executable, MuonTrap.muontrap_path()},

        args: ["-g", cgroup_path, "-c", "cpu", "./test/fork_a_lot.test"]

      )



    os_pid = os_pid(port)

    assert is_os_pid_around?(os_pid)

    assert cpu_cgroup_exists(cgroup_path)



    Port.close(port)



    wait_for_close_check()

    assert !is_os_pid_around?(os_pid)

    assert !cpu_cgroup_exists(cgroup_path)

  end

end