Add gemfile support for testing against various versions of

activerecord on travis.

.gitignore

@@ -2,3 +2,4 @@ pkg
 .bundle
 .DS_Store
 Gemfile.lock
+gemfiles/*.lock

.travis.yml

@@ -1,6 +1,16 @@
 language: ruby
 rvm:
-  - 1.9.2
   - 1.9.3
-  - jruby-19mode
-  - rbx-19mode
+  - 2.0.0
+  - 2.1.0
+  - jruby
+  - rbx
+gemfile:
+  - gemfiles/active_record_40.gemfile
+  - gemfiles/active_record_41.gemfile
+  - gemfiles/active_record_edge.gemfile
+matrix:
+  allow_failures:
+    - rvm: rbx
+    - rvm: jruby
+  fast_finish: true

gemfiles/active_record_40.gemfile

@@ -0,0 +1,13 @@
+source 'https://rubygems.org'
+
+gem 'activerecord', '~> 4.0.0', :require => 'active_record'
+gem 'activesupport', '~> 4.0.0', :require => 'active_record'
+
+platforms :ruby, :rbx do
+  gem 'sqlite3'
+end
+platforms :jruby do
+  gem 'activerecord-jdbcsqlite3-adapter'
+end
+
+gemspec :path => '../'

gemfiles/active_record_41.gemfile

@@ -0,0 +1,15 @@
+source 'https://rubygems.org'
+
+git 'git://github.com/rails/rails.git', :branch => '4-1-stable' do
+  gem 'activerecord', :require => 'active_record'
+  gem 'activesupport', :require => 'active_record'
+end
+
+platforms :ruby, :rbx do
+  gem 'sqlite3'
+end
+platforms :jruby do
+  gem 'activerecord-jdbcsqlite3-adapter'
+end
+
+gemspec :path => '../'

gemfiles/active_record_edge.gemfile

@@ -0,0 +1,15 @@
+source 'https://rubygems.org'
+
+git 'git://github.com/rails/rails.git' do
+  gem 'activerecord', :require => 'active_record'
+  gem 'activesupport', :require => 'active_record'
+end
+
+platforms :ruby, :rbx do
+  gem 'sqlite3'
+end
+platforms :jruby do
+  gem 'activerecord-jdbcsqlite3-adapter'
+end
+
+gemspec :path => '../'