class RCov::VerifyTask

def define
  desc "Verify that rcov coverage is at least #{threshold}%"
  task @name do
    total_coverage = nil
    File.open(index_html).each_line do |line|
      if line =~ /<tt class='coverage_total'>(\d+\.\d+)%<\/tt>/
        total_coverage = eval($1)
        break
      end
    end
    puts "Coverage: #{total_coverage}% (threshold: #{threshold}%)" if verbose
    raise "Coverage must be at least #{threshold}% but was #{total_coverage}%" if total_coverage < threshold
    raise "Coverage has increased above the threshold of #{threshold}% to #{total_coverage}%. You should update your threshold value." if (total_coverage > threshold) and require_exact_threshold
  end
end

def initialize(name=:verify_rcov)
  @name = name
  @index_html = 'coverage/index.html'
  @verbose = true
  @require_exact_threshold = true
  yield self if block_given?
  raise "Threshold must be set" if @threshold.nil?
  define
end