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#!/usr/bin/env ruby
require 'optparse'
KNOWN_BAD_REVISIONS = [4634, 4635]
class Args < Hash
def initialize(args)
super()
self[:quiet] = false
opts = OptionParser.new do |opts|
opts.banner = "Usage: #$0 [options]"
opts.on('-s', '--start_revision NUMBER', Integer,
'start from revision NUMBER') do |revision|
self[:start_revision] = revision
end
opts.on('-f', '--finish_revision [NUMBER]', Integer,
'finish on revision [NUMBER]',
'(defaults to latest revision of',
' http://dev.rubyonrails.org/svn/rails/trunk)') do |revision|
self[:end_revision] = revision
end
opts.on('-t', '--test_file STRING',
'path to test file to run') do |test_file|
self[:test_file] = test_file
end
opts.on('-n', '--name STRING',
'name of test to run') do |test_name|
self[:test_name] = test_name
end
opts.on('-b', '--know_bad_revisions LIST',
'Comma separated list if known bad revisions to skip',
'These are added to the list',
"current list: #{KNOWN_BAD_REVISIONS.inspect}") do |extra_known_bad_revisions|
self[:extra_known_bad_revisions] = extra_known_bad_revisions.split(",").map { |r| r.to_i }
end
opts.on('-q', '--quiet',
"don't output each revision as it is tested") do
self[:quiet] = true
end
opts.on_tail('-h', '--help', 'display this help and exit') do
show_help(opts)
end
end
opts.parse!(args)
self[:extra_known_bad_revisions] ||= []
show_help(opts) if self[:start_revision].nil? || self[:test_file].nil? || self[:test_name].nil?
end
def show_help(opts)
puts opts
puts "\n***Assumes a checkout of rails trunk in vendor/rails***"
exit
end
end
class BadRevisionFinder
def initialize(options)
@options = options
@end_revision = @options[:end_revision] ||= latest_rails_revision
@start_revision = @options[:start_revision]
@known_bad_revisions = KNOWN_BAD_REVISIONS + options[:extra_known_bad_revisions]
puts "Known bad revision list: #{@known_bad_revisions.inspect}"
end
def find_bad_revision
sanity_check
while (@end_revision - @start_revision) > 1
check_revision = ((@start_revision + @end_revision) / 2.0).floor
while @known_bad_revisions.include?(check_revision)
check_revision += 1
end
if revision_bad?(check_revision)
puts "bad revision"
@end_revision = check_revision
else
puts "good revision"
@start_revision = check_revision
end
end
bad_revision = revision_bad?(@start_revision) ? @start_revision : @end_revision
puts "r#{bad_revision} caused #{@options[:test_name]} to fail! http://dev.rubyonrails.org/changeset/#{bad_revision}"
end
def sanity_check
# make sure it's passing at the start revision
if revision_bad?(@start_revision)
puts "Hey, this test fails with the start revision #{@start_revision}!"
exit
end
# make sure it's failing on end revision
unless revision_bad?(@end_revision)
puts "Hey, this test passed with the end revision #{@end_revision}!"
exit
end
end
def revision_bad?(revision)
puts "checking r#{revision}" unless @options[:quiet]
`svn up -r #{revision} vendor/rails`
`ruby #{@options[:test_file]} -n #{@options[:test_name]}`
$? != 0
end
def latest_rails_revision
puts "Finding latest edge revision number"
`svn info http://dev.rubyonrails.org/svn/rails/trunk`.match(/Revision: (\d*)/m).captures[0].to_i
end
end
BadRevisionFinder.new(Args.new(ARGV)).find_bad_revision
|
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