rails genera rspec: install - nessun file da caricare - sqlite3 / sqlite3_native (LoadError) - ruby-on-rails-3, rspec

Sto cercando di seguire questo lezionee quando provo a utilizzare il generatore RSpec

$ rails generate rspec:install

Ottengo il seguente errore:

/usr/lib/ruby/gems/1.8/gems/sqlite3-1.3.5/lib/sqlite3.rb:6:in `require": no such file to load -- sqlite3/sqlite3_native (LoadError)
from /usr/lib/ruby/gems/1.8/gems/sqlite3-1.3.5/lib/sqlite3.rb:6
from /usr/lib/ruby/gems/1.8/gems/bundler-1.1.3/lib/bundler/runtime.rb:68:in `require"
from /usr/lib/ruby/gems/1.8/gems/bundler-1.1.3/lib/bundler/runtime.rb:68:in `require"
from /usr/lib/ruby/gems/1.8/gems/bundler-1.1.3/lib/bundler/runtime.rb:66:in `each"
from /usr/lib/ruby/gems/1.8/gems/bundler-1.1.3/lib/bundler/runtime.rb:66:in `require"
from /usr/lib/ruby/gems/1.8/gems/bundler-1.1.3/lib/bundler/runtime.rb:55:in `each"
from /usr/lib/ruby/gems/1.8/gems/bundler-1.1.3/lib/bundler/runtime.rb:55:in `require"
from /usr/lib/ruby/gems/1.8/gems/bundler-1.1.3/lib/bundler.rb:119:in `require"
from /home/rcooke/sample_app/config/application.rb:13
from /usr/lib/ruby/gems/1.8/gems/railties-3.2.2/lib/rails/commands.rb:24:in `require"
from /usr/lib/ruby/gems/1.8/gems/railties-3.2.2/lib/rails/commands.rb:24
from script/rails:6:in `require"
from script/rails:6

Seguendo le altre discussioni su questo stesso problema, ho cambiato il mio Gemfile per contenere quanto segue:

group :development, :test do
gem "sqlite3-ruby", :require => "sqlite3"
gem "sqlite3", "1.3.5"
gem "rspec-rails"
gem "rspec"
end

Ho aggiunto sia rspec che rspec-rails al Gemfile dopo aver notato che sono entrambi installati:

Using rspec-core (2.9.0)
Using rspec-expectations (2.9.0)
Using rspec-mocks (2.9.0)
Using rspec (2.9.0)
Using rspec-rails (2.9.0)

Ho anche eseguito:

$ gem install rspec

Forse non sto usando la procedura corretta per l'aggiornamento, una volta che ho salvato il Gemfile sul mio computer che sto usando aggiornamento del pacchetto e installazione bundle. Provando rails genera rspec: installa fallisce ancora.

Aggiornamento: quando provo ad eseguire la risorsa ottengo il seguente errore:

$ rake spec
rake aborted!
no such file to load -- sqlite3/sqlite3_native

Aggiornamento: ho ovviamente rovinato qualcosa, ora se provo ad avviare una nuova applicazione ottengo il seguente errore.

$ rails new sample_app2 --skip-test-unit
/usr/lib/ruby/site_ruby/1.8/rubygems/dependency.rb:247:in `to_specs": Could not find json (~> 1.4) amongst [actionmailer-3.2.2, actionpack-3.2.2, activemodel-3.2.2, activerecord-3.2.2, activeresource-3.2.2, activesupport-3.2.2, addressable-2.2.7, arel-3.0.2, builder-3.0.0, bundler-1.1.3, bundler-1.1.2, coffee-rails-3.2.2, coffee-script-2.2.0, coffee-script-source-1.2.0, diff-lcs-1.1.3, erubis-2.7.0, execjs-1.3.0, heroku-2.22.0, heroku-2.21.3, hike-1.2.1, i18n-0.6.0, journey-1.0.3, jquery-rails-2.0.1, json_pure-1.6.6, launchy-2.1.0, mail-2.4.4, mime-types-1.18, multi_json-1.2.0, multi_json-1.1.0, netrc-0.7.1, polyglot-0.3.3, rack-1.4.1, rack-cache-1.2, rack-ssl-1.3.2, rack-test-0.6.1, rails-3.2.2, railties-3.2.2, rake-0.9.2.2, rdoc-3.12, rest-client-1.6.7, rspec-2.9.0, rspec-core-2.9.0, rspec-expectations-2.9.0, rspec-mocks-2.9.0, rspec-rails-2.9.0, rubyzip-0.9.6.1, sass-3.1.15, sass-rails-3.2.5, sprockets-2.3.1, sprockets-2.1.2, sqlite3-1.3.5, sqlite3-ruby-1.3.3, thor-0.14.6, tilt-1.3.3, treetop-1.4.10, tzinfo-0.3.32, uglifier-1.2.3] (Gem::LoadError)
from /usr/lib/ruby/site_ruby/1.8/rubygems/specification.rb:772:in `activate_dependencies"
from /usr/lib/ruby/site_ruby/1.8/rubygems/specification.rb:761:in `each"
from /usr/lib/ruby/site_ruby/1.8/rubygems/specification.rb:761:in `activate_dependencies"
from /usr/lib/ruby/site_ruby/1.8/rubygems/specification.rb:745:in `activate"
from /usr/lib/ruby/site_ruby/1.8/rubygems/specification.rb:775:in `activate_dependencies"
from /usr/lib/ruby/site_ruby/1.8/rubygems/specification.rb:761:in `each"
from /usr/lib/ruby/site_ruby/1.8/rubygems/specification.rb:761:in `activate_dependencies"
from /usr/lib/ruby/site_ruby/1.8/rubygems/specification.rb:745:in `activate"
from /usr/lib/ruby/site_ruby/1.8/rubygems.rb:1211:in `gem"
from /usr/bin/rails:18

risposte:

Hai la libreria SQlite3 installata sul tuo sistema? Quando guardi dentro / Usr / lib / per libsqlite3.so (supponendo che tu sia su Linux) lo vedi? se non fosse allora potresti provare a installarlo (tramite apt-get / portage / il tuo gestore di pacchetti) e vedere se questo aiuta.