### 
# Directory watcher needs to be in the directory that this is run from.
# You also need a statistics script which is in this directory:
# 		http://benjaminthomas.org/assets/posts/2009-03-12-directory-watcher-algorithms/statistics.rb


require 'directory_watcher.rb'
require 'statistics.rb'

unless $*.length == 1
	puts "You must supply one directory to scan"
	exit
end

trials = []
NUM_TRIALS = 50

1.upto(NUM_TRIALS) do |i|
	dw = DirectoryWatcher.new $*[0]

	dw.glob = '**/*'
	dw.add_observer { |arg| }

	start_time = Time.new
	dw.start
	dw.stop
	elapsed_time = Time.new - start_time

	trials << elapsed_time
end

# Count files.  We don't do this above because we want the test to be as simple as possible.
dw = DirectoryWatcher.new $*[0]
dw.glob = '**/*'
files_counted = 0
dw.add_observer do |arg|
	files_counted = event.length # if getting passed all events as array
#	files_counted = files_counted + 1 # if getting passed events 1 at a time
end
dw.start
dw.stop

puts "#{$*[0]}"
puts "#{'-' * $*[0].length}"
puts "Num files: #{files_counted}"
puts "Mean #{trials.mean}"
puts "Deviation #{trials.deviation}"