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path: root/deps/rabbitmq_cli/test/diagnostics/os_env_command_test.exs
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## This Source Code Form is subject to the terms of the Mozilla Public
## License, v. 2.0. If a copy of the MPL was not distributed with this
## file, You can obtain one at https://mozilla.org/MPL/2.0/.
##
## Copyright (c) 2007-2020 VMware, Inc. or its affiliates.  All rights reserved.

defmodule OsEnvCommandTest do
  use ExUnit.Case, async: false
  import TestHelper

  @command RabbitMQ.CLI.Diagnostics.Commands.OsEnvCommand

  setup_all do
    RabbitMQ.CLI.Core.Distribution.start()

    start_rabbitmq_app()

    ExUnit.configure([max_cases: 1])

    on_exit([], fn ->
      start_rabbitmq_app()
    end)

    :ok
  end

  setup context do
    {:ok, opts: %{
        node: get_rabbit_hostname(),
        timeout: context[:test_timeout] || 30000,
        all: false
      }}
  end

  test "merge_defaults: merges no defaults" do
    assert @command.merge_defaults([], %{}) == {[], %{}}
  end

  test "validate: treats positional arguments as a failure" do
    assert @command.validate(["extra-arg"], %{}) == {:validation_failure, :too_many_args}
  end

  test "validate: treats empty positional arguments and default switches as a success" do
    assert @command.validate([], %{}) == :ok
  end

  @tag test_timeout: 3000
  test "run: targeting an unreachable node throws a badrpc", context do
    assert match?({:badrpc, _}, @command.run([], Map.merge(context[:opts], %{node: :jake@thedog, timeout: 100})))
  end

  test "run: returns defined RabbitMQ-specific environment variables", context do
    vars = @command.run([], context[:opts])

    # Only variables that are used by RABBITMQ are returned.
    # They can be prefixed with RABBITMQ_ or not, rabbit_env tries both
    # when filtering env variables down.
    assert Enum.any?(vars, fn({k, _v}) ->
      String.starts_with?(k, "RABBITMQ_") or String.starts_with?(k, "rabbitmq_")
    end)
  end
end