all_benchamrk_tasks = []

namespace(:benchmark) do
  Dir[File.join(File.dirname(__FILE__), "..", "benchmarks", "*_benchmark.rb")]. each do |benchmark_file|
    task_name = File.basename(benchmark_file, "_benchmark.rb").to_sym

    desc "Run the #{task_name} benchmark."
    task(task_name, :n) do |task, args|
      ENV["N"] = args[:n] if args[:n]
      load(File.expand_path(benchmark_file))
    end

    all_benchamrk_tasks << "benchmark:#{task_name}"
  end
end

unless all_benchamrk_tasks.empty?
  desc "Run the whole benchmark suite"
  task(:benchmark, :n) do |task, args|
    all_benchamrk_tasks.each do |t|
      task(t).invoke(args[:n])
      puts
    end
  end
end