Unable to run specs from a fresh clone of the project

[KaptajnKold]

I've run the bundle command. Now, when I run rake spec, I get the following error:

/usr/local/var/rbenv/versions/2.1.1/bin/ruby -S rspec ./spec/casclient/client_spec.rb ./spec/casclient/frameworks/rails/filter_spec.rb ./spec/casclient/tickets/storage/active_record_ticket_store_spec.rb ./spec/casclient/tickets/storage_spec.rb ./spec/casclient/validation_response_spec.rb ./spec/support/local_hash_ticket_store_spec.rb
/Users/adam/br/sandbox/rubycas-client/lib/casclient/tickets/storage/active_record_ticket_store.rb:69:in `<module:Storage>': uninitialized constant ActiveRecord::SessionStore (NameError)
from /Users/adam/br/sandbox/rubycas-client/lib/casclient/tickets/storage/active_record_ticket_store.rb:3:in `<module:Tickets>'
from /Users/adam/br/sandbox/rubycas-client/lib/casclient/tickets/storage/active_record_ticket_store.rb:2:in `<module:CASClient>'
from /Users/adam/br/sandbox/rubycas-client/lib/casclient/tickets/storage/active_record_ticket_store.rb:1:in `<top (required)>'
from /Users/adam/br/sandbox/rubycas-client/spec/casclient/tickets/storage/active_record_ticket_store_spec.rb:2:in `require'
from /Users/adam/br/sandbox/rubycas-client/spec/casclient/tickets/storage/active_record_ticket_store_spec.rb:2:in `<top (required)>'
from /usr/local/var/rbenv/versions/2.1.1/lib/ruby/gems/2.1.0/gems/rspec-core-2.14.8/lib/rspec/core/configuration.rb:896:in `load'
from /usr/local/var/rbenv/versions/2.1.1/lib/ruby/gems/2.1.0/gems/rspec-core-2.14.8/lib/rspec/core/configuration.rb:896:in `block in load_spec_files'
from /usr/local/var/rbenv/versions/2.1.1/lib/ruby/gems/2.1.0/gems/rspec-core-2.14.8/lib/rspec/core/configuration.rb:896:in `each'
from /usr/local/var/rbenv/versions/2.1.1/lib/ruby/gems/2.1.0/gems/rspec-core-2.14.8/lib/rspec/core/configuration.rb:896:in `load_spec_files'
from /usr/local/var/rbenv/versions/2.1.1/lib/ruby/gems/2.1.0/gems/rspec-core-2.14.8/lib/rspec/core/command_line.rb:22:in `run'
from /usr/local/var/rbenv/versions/2.1.1/lib/ruby/gems/2.1.0/gems/rspec-core-2.14.8/lib/rspec/core/runner.rb:80:in `run'
from /usr/local/var/rbenv/versions/2.1.1/lib/ruby/gems/2.1.0/gems/rspec-core-2.14.8/lib/rspec/core/runner.rb:17:in `block in autorun'

Obviously there is something step I have to take, that I'm not aware of. I can see that there's a database.yml file in the specs directory, but there is no rake task to create or migrate the database. What do I need to do?