`require': cannot load such file -- capybara/rspec (LoadError) - ruby-on-rails

Question

I tried to test my project. It was working before and I don't know what i did to whenever i type bundle exec rspec spec/ it says cannot load such file -- capybara/rspec (LoadError). And Please I need an advice to which one is good for testing my MVC in ruby on rails as a newbie.
Gemfile:
------------
group :test do
# Pretty printed test output
gem 'turn', :require => false
gem 'minitest'
gem 'capybara', '1.1.2'
gem 'rb-inotify', '0.8.8'
gem 'libnotify', '0.5.9'
gem 'guard-spork', '0.3.2'
gem 'spork', '0.9.0'
gem 'spork-testunit'
gem 'guard-test'
gem 'ruby-prof'
gem 'factory_girl_rails', '1.4.0'
if RUBY_PLATFORM =~ /linux/
gem 'capybara-webkit'
end
gem 'launchy'
end
group :development, :test do
gem 'rspec-rails', '2.10.0'
gem 'guard-rspec', '0.5.5'
end
spec_helper:
require 'rubygems'
#require 'factory_girl'
#uncomment the following line to use spork with the debugger
#require 'spork/ext/ruby-debug'
ENV["RAILS_ENV"] ||= 'test'
require File.expand_path("../../config/environment", __FILE__)
require 'rspec/rails'
require 'rspec/autorun'
require 'capybara/rspec'
require 'capybara/rails'
# Requires supporting ruby files with custom matchers and macros, etc,
# in spec/support/ and its subdirectories.
Dir[Rails.root.join("spec/support/**/*.rb")].each {|f| require f}
RSpec.configure do |config|
# ## Mock Framework
#
# If you prefer to use mocha, flexmock or RR, uncomment the appropriate line:
#
# config.mock_with :mocha
# config.mock_with :flexmock
# config.mock_with :rr
config.mock_with :rspec
# Remove this line if you're not using ActiveRecord or ActiveRecord fixtures
config.fixture_path = "#{::Rails.root}/spec/fixtures"
# If you're not using ActiveRecord, or you'd prefer not to run each of your
# examples within a transaction, remove the following line or assign false
# instead of true.
config.use_transactional_fixtures = false
# If true, the base class of anonymous controllers will be inferred
# automatically. This will be the default behavior in future versions of
# rspec-rails.
config.infer_base_class_for_anonymous_controllers = false
#Capybara.default_driver = :selenium
Capybara.javascript_driver = :webkit
end
Error:
/home/IN4SYSTEMS/sri.kalai/Desktop/gems/ruby/1.9.1/gems/activesupport-3.2.9/lib/active_support/dependencies.rb:251:in `require': cannot load such file -- capybara/rspec (LoadError)
from /home/IN4SYSTEMS/sri.kalai/Desktop/gems/ruby/1.9.1/gems/activesupport-3.2.9/lib/active_support/dependencies.rb:251:in `block in require'
from /home/IN4SYSTEMS/sri.kalai/Desktop/gems/ruby/1.9.1/gems/activesupport-3.2.9/lib/active_support/dependencies.rb:236:in `load_dependency'
from /home/IN4SYSTEMS/sri.kalai/Desktop/gems/ruby/1.9.1/gems/activesupport-3.2.9/lib/active_support/dependencies.rb:251:in `require'
from /home/IN4SYSTEMS/sri.kalai/Documents/promaster/spec/spec_helper.rb:11:in `<top (required)>'
from /home/IN4SYSTEMS/sri.kalai/Documents/promaster/spec/helpers/loc/epcs_helper_spec.rb:1:in `require'
from /home/IN4SYSTEMS/sri.kalai/Documents/promaster/spec/helpers/loc/epcs_helper_spec.rb:1:in `<top (required)>'
from /home/IN4SYSTEMS/sri.kalai/Desktop/gems/ruby/1.9.1/gems/rspec-core-2.10.1/lib/rspec/core/configuration.rb:746:in `load'
from /home/IN4SYSTEMS/sri.kalai/Desktop/gems/ruby/1.9.1/gems/rspec-core-2.10.1/lib/rspec/core/configuration.rb:746:in `block in load_spec_files'
from /home/IN4SYSTEMS/sri.kalai/Desktop/gems/ruby/1.9.1/gems/rspec-core-2.10.1/lib/rspec/core/configuration.rb:746:in `map'
from /home/IN4SYSTEMS/sri.kalai/Desktop/gems/ruby/1.9.1/gems/rspec-core-2.10.1/lib/rspec/core/configuration.rb:746:in `load_spec_files'
from /home/IN4SYSTEMS/sri.kalai/Desktop/gems/ruby/1.9.1/gems/rspec-core-2.10.1/lib/rspec/core/command_line.rb:22:in `run'
from /home/IN4SYSTEMS/sri.kalai/Desktop/gems/ruby/1.9.1/gems/rspec-core-2.10.1/lib/rspec/core/runner.rb:66:in `rescue in run'
from /home/IN4SYSTEMS/sri.kalai/Desktop/gems/ruby/1.9.1/gems/rspec-core-2.10.1/lib/rspec/core/runner.rb:62:in `run'
from /home/IN4SYSTEMS/sri.kalai/Desktop/gems/ruby/1.9.1/gems/rspec-core-2.10.1/lib/rspec/core/runner.rb:10:in `block in autorun'
Thanks in advance!!!

Answer 1

I hope you did install all required gems? Using bundle install BTW did you change Gemfile, in that case you would be required to install Gems using bundle install.
You could check list of gems available by gem list
Regarding second part of the question, which testing API to use. It is matter of choice. You could stick with rpsec and if you find it falls short of your expectation, then look out for change.

Answer 2

Try gem query --local to see if capybara-screenshot appears in your list of installed gems. (For some reason, this rendered a different list than gem list for me.)
If you don't see it, then try gem install capybara-screenshot. It is not included in the installation of capybara, so seeing capybara in your list of gems alone is not sufficient!

Answer 3

I had the same problem today and I fixed it in the following way:
Comment in file spec_helper.rb
next raws
require 'capybara/rspec'
require 'capybara/rails',
Remove
/usr/local/rvm/gems/ruby-1.9.3-p327#olha/gems/capybara-webkit-1.1.0
from my HDD space.