.simplecov

require "simplecov-rcov-text"
require "colorized_text"
include ColorizedText

SimpleCov.formatter = SimpleCov::Formatter::MultiFormatter.new([
  SimpleCov::Formatter::RcovTextFormatter,
  SimpleCov::Formatter::HTMLFormatter
])
SimpleCov.start do
  add_filter "/spec/"

  # Fail the build when coverage is weak:
  at_exit do
    SimpleCov.result.format!
    threshold, actual = 100, SimpleCov.result.covered_percent
    if actual < threshold
      msg = "\nLow coverage: "
      msg << red("#{actual}%")
      msg << " is #{red 'under'} the threshold: "
      msg << green("#{threshold}%.")
      msg << "\n"
      $stderr.puts msg
      exit 1
    else
      # Precision: three decimal places:
      actual_trunc = (actual * 1000).floor / 1000.0
      msg = "\nCoverage: "
      msg << green("#{actual}%")
      msg << " is #{green 'over'} the threshold: "
      if actual_trunc > threshold
        msg << bold(yellow("#{threshold}%. "))
        msg << "Please update the threshold to: "
        msg << bold(green("#{actual_trunc}% "))
        msg << "in ./.simplecov."
      else
        msg << green("#{threshold}%.")
      end
      msg << "\n"
      $stdout.puts msg
    end
  end
end