Merge pull request #102 from activeadmin-plugins/multiple_rails_version_specs

Travis CI via multiple rails versions

Author: Fivell

.travis.yml

@@ -1,4 +1,9 @@
 script: bundle exec rspec spec
+env:
+  matrix:
+    - RAILS=4.0.13
+    - RAILS=4.1.15
+    - RAILS=4.2.6
 rvm:
   - 1.9.3
   - 2.0.0

Gemfile

@@ -3,8 +3,9 @@ source 'https://rubygems.org'
 # Specify your gem's dependencies in active_admin_importable.gemspec
 gemspec
 group :test do
+  default_rails_version = '4.2.6'
   gem 'sprockets-rails', '2.3.3'
-  gem 'rails',  '4.2.0'
+  gem 'rails',  "#{ENV['RAILS'] || default_rails_version}"
   gem 'rspec-rails'
   gem 'activeadmin', github: 'activeadmin'  , ref: 'd787029e5523be2eb2ed99816eb0cecca2b72862'
   gem 'coveralls', require: false # Test coverage website. Go to https://coveralls.io
@@ -15,5 +16,9 @@ group :test do
   gem 'capybara'
   gem 'selenium-webdriver'
   gem 'poltergeist'
-  gem "mime-types", (RUBY_VERSION >= "2.0" ? "~> 3.0" : "~> 2.99")
+  if RUBY_VERSION >= '2.0'
+    gem 'mime-types',  '~> 3.0'
+  else
+    gem 'mime-types', '< 3.0.0'
+  end
 end