find-interacting-feature.rb

#!/usr/bin/ruby

unless failing_feature = ARGV[0]
  puts "Usage: find-interacting-feature <feature_file>"
  exit
end

other_features = Dir["features/**/*.feature"] - [failing_feature]

interacting_feature = other_features.detect do |other_feature|
  command = "./script/cucumber #{other_feature} #{failing_feature}"
  puts "Running after #{other_feature}"
  `#{command} 2>&1`
  $? != 0
end

if interacting_feature
  puts "Fails when run after #{interacting_feature}"
else
  puts "No interacting features found"
end