#!/usr/bin/env ruby
# encoding: UTF-8

require File.expand_path('../test_helper', __FILE__)
require 'fileutils'
require 'stringio'
require 'tmpdir'
require_relative 'prime'

# --  Tests ----
class PrinterGraphTest < TestCase
  def setup
    super
    # WALL_TIME so we can use sleep in our test and get same measurements on linux and windows
    @result = RubyProf::Profile.profile(measure_mode: RubyProf::WALL_TIME) do
      run_primes(1000, 5000)
    end
  end

  def graph_output_nth_column_values(output, n)
    only_root_calls = output.split("\n").select { |line| line =~ /^ +[\d\.]+%/ }
    only_root_calls.collect { |line| line.split(/ +/)[n] }
  end

  def assert_sorted(array)
    array = array.map {|n| n.to_f} # allow for > 10s times to sort right, since lexographically 4.0 > 10.0
    assert_equal(array, array.sort.reverse, "Array #{array.inspect} is not sorted")
  end

  def test_graph_results_sorting
    printer = RubyProf::GraphPrinter.new(@result)

    sort_method_with_column_number = {total_time: 3, self_time: 4, wait_time: 5, children_time: 6}

    sort_method_with_column_number.each_pair do |sort_method, n|
      output = StringIO.new
      printer.print(output, sort_method: sort_method)
      times = graph_output_nth_column_values(output.string, n)
      assert_sorted times
    end
  end
end
