Test against Rails 5.x and Ruby 2.x

* Rails 5.0 and 5.1
* Ruby 2.2, 2.3, 2.4, and 2.5-dev
* Dev: use default rbenv/chruby/rvm Ruby version
* Travis: cache bundle between builds

.travis.yml

@@ -1,8 +1,22 @@
+sudo: false
 language: ruby
+cache: bundler
+
+services:
+  - mysql
+  - postgresql
+
+before_script:
+  - mysql -e 'create database makara_test;'
+  - psql -c 'create database makara_test;' -U postgres
 
 rvm:
-  - 2.0.0
-  - 2.1.1
+  - 2.0
+  - 2.1
+  - 2.2
+  - 2.3
+  - 2.4
+  - ruby-head
   - jruby
 
 gemfile:
@@ -12,17 +26,43 @@ gemfile:
   - gemfiles/ar40.gemfile
   - gemfiles/ar41.gemfile
   - gemfiles/ar42.gemfile
+  - gemfiles/ar50.gemfile
+  - gemfiles/ar51.gemfile
+  - gemfiles/ar-head.gemfile
 
-sudo: false
-
-services:
-  - mysql
-  - postgresql
-
-before_script:
-  - mysql -e 'create database makara_test;'
-  - psql -c 'create database makara_test;' -U postgres
+env:
+  global:
+    - "JRUBY_OPTS='--dev -J-Xmx1024M'"
 
-before_install:
-  - gem update --system 2.1.11
-  - gem --version
+matrix:
+  exclude:
+    - gemfile: gemfiles/ar30.gemfile
+      rvm: 2.2
+    - gemfile: gemfiles/ar30.gemfile
+      rvm: 2.3
+    - gemfile: gemfiles/ar30.gemfile
+      rvm: 2.4
+    - gemfile: gemfiles/ar30.gemfile
+      rvm: ruby-head
+    - gemfile: gemfiles/ar50.gemfile
+      rvm: 2.0
+    - gemfile: gemfiles/ar50.gemfile
+      rvm: 2.1
+    - gemfile: gemfiles/ar50.gemfile
+      rvm: 2.2
+    - gemfile: gemfiles/ar51.gemfile
+      rvm: 2.0
+    - gemfile: gemfiles/ar51.gemfile
+      rvm: 2.1
+    - gemfile: gemfiles/ar51.gemfile
+      rvm: 2.2
+    - gemfile: gemfiles/ar-head.gemfile
+      rvm: 2.0
+    - gemfile: gemfiles/ar-head.gemfile
+      rvm: 2.1
+    - gemfile: gemfiles/ar-head.gemfile
+      rvm: 2.2
+  allow_failures:
+    - gemfile: gemfiles/ar-head.gemfile
+    - rvm: ruby-head
+  fast_finish: true

gemfiles/ar-head.gemfile

@@ -0,0 +1,15 @@
+source 'https://rubygems.org'
+
+# Specify your gem's dependencies in makara.gemspec
+gemspec :path => '../'
+
+
+gem 'rake'
+gem 'activerecord', :git => 'https://github.com/rails/rails'
+gem 'rspec'
+gem 'rack'
+gem 'timecop'
+gem 'mysql2', :platform => :ruby
+gem 'activerecord-jdbcmysql-adapter', :platform => :jruby
+gem 'pg', :platform => :ruby
+gem 'activerecord-jdbcpostgresql-adapter', :platform => :jruby

gemfiles/ar50.gemfile

@@ -0,0 +1,15 @@
+source 'https://rubygems.org'
+
+# Specify your gem's dependencies in makara.gemspec
+gemspec :path => '../'
+
+
+gem 'rake'
+gem 'activerecord', '~> 5.0.0'
+gem 'rspec'
+gem 'rack'
+gem 'timecop'
+gem 'mysql2', :platform => :ruby
+gem 'activerecord-jdbcmysql-adapter', :platform => :jruby
+gem 'pg', :platform => :ruby
+gem 'activerecord-jdbcpostgresql-adapter', :platform => :jruby

gemfiles/ar51.gemfile

@@ -0,0 +1,15 @@
+source 'https://rubygems.org'
+
+# Specify your gem's dependencies in makara.gemspec
+gemspec :path => '../'
+
+
+gem 'rake'
+gem 'activerecord', '~> 5.1.0'
+gem 'rspec'
+gem 'rack'
+gem 'timecop'
+gem 'mysql2', :platform => :ruby
+gem 'activerecord-jdbcmysql-adapter', :platform => :jruby
+gem 'pg', :platform => :ruby
+gem 'activerecord-jdbcpostgresql-adapter', :platform => :jruby