[Resolves] Rails 6 test suite

.travis.yml

@@ -1,9 +1,10 @@
-sudo: required
+os: linux
+
 language: ruby
 services:
   - docker
 rvm:
-  - jruby-9.1.15.0
+  - jruby-9.1.17.0
   - 2.1.9
   - 2.2.9
   - 2.3.6
@@ -29,11 +30,11 @@ before_install:
 env:
   RUBY_GC_MALLOC_LIMIT: 90000000
   RUBY_GC_HEAP_FREE_SLOTS: 200000
-matrix:
+jobs:
   allow_failures:
     - rvm: ruby-head
     - gemfile: gemfiles/rails_master.gemfile
-    - rvm: jruby-9.1.15.0
+    - rvm: jruby-9.1.17.0
       gemfile: gemfiles/rails_5_0.gemfile
   exclude:
     - rvm: 2.1.9
@@ -46,19 +47,19 @@ matrix:
       gemfile: gemfiles/rails_6_0.gemfile
     - rvm: 2.1.9
       gemfile: gemfiles/rails_master.gemfile
-    - rvm: 2.2.9 
+    - rvm: 2.2.9
       gemfile: gemfiles/rails_6_0.gemfile
     - rvm: 2.3.6
       gemfile: gemfiles/rails_6_0.gemfile
     - rvm: 2.4.3
       gemfile: gemfiles/rails_6_0.gemfile
-    - rvm: jruby-9.1.15.0
+    - rvm: jruby-9.1.17.0
       gemfile: gemfiles/rails_5_1.gemfile
-    - rvm: jruby-9.1.15.0
+    - rvm: jruby-9.1.17.0
       gemfile: gemfiles/rails_5_2.gemfile
-    - rvm: jruby-9.1.15.0
+    - rvm: jruby-9.1.17.0
       gemfile: gemfiles/rails_6_0.gemfile
-    - rvm: jruby-9.1.15.0
+    - rvm: jruby-9.1.17.0
       gemfile: gemfiles/rails_master.gemfile
   fast_finish: true
 cache: bundler

Gemfile

@@ -2,7 +2,7 @@ source 'http://rubygems.org'
 
 gemspec
 
-gem 'rails',        '>= 3.1.2'
+gem 'rails', '>= 3.1.2'
 
 group :local do
   gem 'pry'

README.md

@@ -484,7 +484,7 @@ Note that you can disable the default migrating of all tenants with `db:migrate`
 
 Apartment supports parallelizing migrations into multiple threads when
 you have a large number of tenants. By default, parallel migrations is
-turned off. You can enable this by setting `parallel_migration_threads` to 
+turned off. You can enable this by setting `parallel_migration_threads` to
 the number of threads you want to use in your initializer.
 
 Keep in mind that because migrations are going to access the database,

Rakefile

@@ -119,10 +119,18 @@ def activerecord_below_5_2?
   ActiveRecord.version.release < Gem::Version.new('5.2.0')
 end
 
+def activerecord_below_6_0?
+  ActiveRecord.version.release < Gem::Version.new('6.0.0')
+end
+
 def migrate
   if activerecord_below_5_2?
     ActiveRecord::Migrator.migrate('spec/dummy/db/migrate')
-  else
+  elsif activerecord_below_6_0?
     ActiveRecord::MigrationContext.new('spec/dummy/db/migrate').migrate
+  else
+    # TODO: Figure out if there is any other possibility that can/should be
+    # passed here as the second argument for the migration context
+    ActiveRecord::MigrationContext.new('spec/dummy/db/migrate', ActiveRecord::SchemaMigration).migrate
   end
 end