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white_bread

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Story BDD tool based on cucumber. Parses Gherkin formatted feature files and executes them as tests.

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white_bread lib white_bread runners steps_runner.ex
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lib/white_bread/runners/steps_runner.ex 

defimpl WhiteBread.Runners, for: List do

  alias WhiteBread.Context.StepExecutor



  def run(steps, context, setup) do

    setup.background_steps

      |> Enum.concat(steps)

      |> Enum.reduce({:ok, setup.starting_state}, step_executor(context))

      |> finalize(context)



  end



  defp step_executor(context) do

    fn

      (step, {:ok, state})

        -> run_step(context, step, state)

      (_step, failure_state)

        -> failure_state

    end

  end



  defp run_step(context, step, state) do

    possible_steps = apply(context, :get_steps, [])

    result = StepExecutor.execute_step(possible_steps, step, state)

    case result do

      {:ok, state} -> {:ok, state}

      :ok          -> {:ok, state}

      error        -> {error, state}

    end

  end



  defp finalize(result = {:ok, state}, context) do

    context.finalize(state)

    result

  end

  defp finalize({error_result, state}, context) do

    context.finalize(state)

    error_result

  end



end