Rails 6.0.0.beta1 support

.travis.yml

@@ -1,6 +1,9 @@
 language: ruby
 cache: bundler
 
+addons:
+  postgresql: '9.4'
+
 rvm:
   - ruby-head
   - 2.5.1
@@ -17,17 +20,26 @@ gemfile:
   - gemfiles/activerecord_5.2.gemfile
   - gemfiles/activerecord_5.1.gemfile
   - gemfiles/activerecord_5.0.gemfile
+  - gemfiles/activerecord_6.0.gemfile
 
 sudo: false
 
 bundler_args: '--without local_development --jobs 3 --retry 3'
 
 before_install:
-   - gem install bundler
+    - gem uninstall -v '>= 2' -i $(rvm gemdir)@global -ax bundler || true
+    - gem install bundler -v '< 2'
 
 script: bundle exec rake
 
 matrix:
   allow_failures:
     - rvm: ruby-head
   fast_finish: true
+  exclude:
+    - rvm: 2.2.7
+      gemfile: gemfiles/activerecord_6.0.gemfile
+    - rvm: 2.3.7
+      gemfile: gemfiles/activerecord_6.0.gemfile
+    - rvm: 2.4.4
+      gemfile: gemfiles/activerecord_6.0.gemfile

Appraisals

@@ -9,3 +9,7 @@ end
 appraise 'activerecord-5.0' do
   gem 'activerecord', "~> 5.0.3"
 end
+
+appraise 'activerecord-6.0' do
+  gem 'activerecord', "~> 6.0.0.beta1"
+end

acts-as-taggable-on.gemspec

@@ -22,7 +22,7 @@ Gem::Specification.new do |gem|
     gem.post_install_message = File.read('UPGRADING.md')
   end
 
-  gem.add_runtime_dependency 'activerecord', ['~> 5.0']
+  gem.add_runtime_dependency 'activerecord', '>= 5.0', '< 6.1'
 
   gem.add_development_dependency 'rspec-rails'
   gem.add_development_dependency 'rspec-its'

gemfiles/activerecord_6.0.gemfile

@@ -0,0 +1,23 @@
+# This file was generated by Appraisal
+
+source "https://rubygems.org"
+
+gem "activerecord", "~> 6.0.0.beta1"
+case ENV["DB"]
+when "postgresql"
+  gem 'pg'
+when "mysql"
+  gem 'mysql2', '~> 0.3'
+else
+  gem 'sqlite3'
+end
+
+group :local_development do
+  gem "guard"
+  gem "guard-rspec"
+  gem "appraisal"
+  gem "rake"
+  gem "byebug", platforms: [:mri_21, :mri_22, :mri_23]
+end
+
+gemspec path: "../"