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mix_test_watch

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Automatically run tests when files change

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mix_test_watch lib mix_test_watch path.ex
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lib/mix_test_watch/path.ex 

defmodule MixTestWatch.Path do

  @moduledoc """

  Decides if we should refresh for a path.

  """



  alias MixTestWatch.Config



  @elixir_source_endings ~w(.erl .ex .exs .eex .xrl .yrl .hrl)

  @ignored_dirs ~w(deps/ _build/)





  #

  # Public API

  #



  @spec watching?(MixTestWatch.Config.t, String.t) :: boolean



  def watching?(path, config \\ %Config{}) do

    watched_directory?( path )

      and elixir_extension?(path, config.extra_extensions)

      and not excluded?(config, path)

  end





  #

  # Internal functions

  #



  @spec excluded?(MixTestWatch.Config.t, String.t) :: boolean



  defp excluded?(config, path) do

    config.exclude

    |> Enum.map(fn pattern -> Regex.match?(pattern, path)  end)

    |> Enum.any?()

  end



  defp watched_directory?(path) do

    not String.starts_with?( path, @ignored_dirs )

  end



  defp elixir_extension?(path, extra_extensions) do

    String.ends_with?(path, @elixir_source_endings ++ extra_extensions)

  end

end