BrainDump: irb - require returns LoadError: no such file to load

Situation:

irb(main):011:0> require 'json'
LoadError: no such file to load -- json
 from (irb):11:in `require'
 from (irb):11
 from :0
irb(main):012:0> require 'rubygems'
=> true
irb(main):013:0> require 'json'
=> true
irb(main):014:0>  

Solution:
Do

require 'rubygem' 

before

Culerity, Cucumber and Couchapp - Part 2

Some further modifications in the files mentioned here were necessary to get the initial setup runable.
(System configuration: WinXP, JRuby 1.5.1, CouchDB 0.11, couchapp 0.6.2)

1. step_definitions/common_culerity_steps.rb - add this
   
   1. def couchapp
   2.   'rem' # enter your couchapp name here
   3. end
2. support/paths.rb - modify
   
   Before:
   
   1.     when /start page/                                            
   2.       "/#{database}/_design/#{database}/index.html"
   3.     else                                                        
   4.  
   After:
   
   1.     when /start page/
   2.       "/#{database}/_design/#{couchapp}/index.html"
   3.     else
3. step_definitions/common_culerity_steps.rb - remove ":resynchronize => true," from
   
   1.     $browser = Culerity::RemoteBrowserProxy.new $server, {
   2.       :browser => :firefox,
   3.       :javascript_exceptions => true,
   4.       :resynchronize => true,
   5.       :status_code_exceptions => true}
   6.  
4. start_page.feature - modify the example scenario to
   
   1.   Scenario: go to the start page        
   2.     When I go to the start page          
   3.     Then I should see the text "Generated CouchApp"

After this modifications I got:

E:\projects\privat\rem>jruby -S cucumber --no-color
Feature: start page
  In order to feel welcome
  As a user
  I want to be welcomed on the start page

  Scenario: go to the start page                    # features\start_page.feature:7
2010-07-10 17:01:12 [INFO] Visit your CouchApp here:
http://localhost:5984/hejhej/_design/rem/index.html
    When I go to the start page                     # features/step_definitions/common_culerity_steps.rb:90
    Then I should see the text "Generated CouchApp" # features/step_definitions/common_culerity_steps.rb:119

1 scenario (1 passed)
2 steps (2 passed)
0m8.625s

E:\projects\privat\rem>

Culerity, Cucumber and Couchapp

Starting a new couchapp application I want to try BDD. I found a small tutorial how to testing couchapps with cucumber and culerity. Unfortunatly I have to deal with WinXP, and so I run into some trouble because the culerity server doesn't start. Finally I can solve it by insert "jruby " in culerity-0.2.10/lib/culerity.rb, line 28.

Before:

def self.run_server
   IO.popen(File.dirname(__FILE__) + "/../bin/run_celerity_server.rb", 'r+').extend(ServerCommands)
end

After:

def self.run_server
   IO.popen("jruby " + File.dirname(__FILE__) + "/../bin/run_celerity_server.rb", 'r+').extend(ServerCommands)
end

Initd Script für cruisecontrolrb

Based on the $CCRB_HOME/daemon/cruise.sample version.

#!/usr/bin/ruby
# chkconfig: 235 99 10
# description: Start or stop the SnipSnap server
#
### BEGIN INIT INFO
# Provides: cruisecontrolrb
# Required-Start:
# Required-Stop:
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6
# Description: Start or stop the cruisecontrolrb daemon
### END INIT INFO

ENV['PATH']="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/bin/X11"

require "fileutils"
include FileUtils

require "rubygems"

begin
  gem 'mongrel'
rescue => e
  puts "Error: daemon mode of CC.rb requires mongrel installed"
  exit 1
end

def cruise_path
  "/home/cruise/cruisecontrolrb"
end

def cruise_user
  "cruise"
end

def cruise_log
  "/var/log/cruisecontrolrb.log"
end

def start
  system "su - #{cruise_user} -c 'cd #{cruise_path} && ./cruise start -d >> #{cruise_log}'"
end

def stop
  system "mongrel_rails stop -P #{cruise_path}/tmp/pids/mongrel.pid >> #{cruise_log}" if File.exists?("#{cruise_path}/tmp/pids/mongrel.pid")
  Dir["#{cruise_path}/tmp/pids/builders/*.pid"].each do |pid_file|
    pid = File.open(pid_file){|f| f.read }
    system "kill -9 #{pid}"
    rm pid_file
  end
end

command = ARGV.shift

system "touch #{cruise_log}"
system "chown #{cruise_user} #{cruise_log}"


case command
when 'start'
  start
  exit 0
when 'stop'
  stop
  exit 0
when 'restart'
  stop
  start
  exit 0
else
  puts "Usage: /etc/init.d/cruise start|stop|restart"
  exit 1
end

Java <=> Ruby

continue <=> next

throw <=> raise

catch <=> rescue

this <=> self

switch <=> case

case <=> when

default <=> else

Source: http://www.wllm.com/node/27

gem update hinterm proxy

Wenn Meldungen wie diese ...

ERROR: While executing gem ... (NoMethodError)
undefined method `[]=’ for Gem::ConfigFile

In ruby/site_ruby/1.8/rubygems/config_file.rb folgendes hinzufügen:
def []=(key, value)
@hash[key.to_s]=value
end


Source

Download files with Ruby

require 'open-uri'
open("pcit.jpg","wb").write(open("http://url/image.jpg").read)

Source