class MiniTest::Spec

def self.bench name, &block
  define_method "bench_#{name.gsub(/\W+/, '_')}", &block
end

def self.bench_performance_constant name, threshold = 0.99, &work
  bench name do
    assert_performance_constant threshold, &work
  end
end

def self.bench_performance_exponential name, threshold = 0.99, &work
  bench name do
    assert_performance_exponential threshold, &work
  end
end

def self.bench_performance_linear name, threshold = 0.99, &work
  bench name do
    assert_performance_linear threshold, &work
  end
end

def self.bench_range &block
  return super unless block
  meta = (class << self; self; end)
  meta.send :define_method, "bench_range", &block
end