Test against multiple rails versions.

.travis.yml

@@ -6,22 +6,29 @@ env:
   global:
     - CC_TEST_REPORTER_ID=98c9b3070ea9ac0e8f7afb6570f181506c3a06372b1db5c7deb8e46089fdf132
     - GIT_COMMITTED_AT=$(if [ "$TRAVIS_PULL_REQUEST" == "false" ]; then git log -1 --pretty=format:%ct; else git log -1 --skip 1 --pretty=format:%ct; fi)
+  matrix:
+    - "RAILS_VERSION=5.0.7.1"
+    - "RAILS_VERSION=5.1.6.1"
+    - "RAILS_VERSION=5.2.2"
+    - "RAILS_VERSION=master"
 rvm:
-  - 2.2.2
-  - 2.3.3
+  - 2.2.9
+  - 2.3.8
+  - 2.6.1
   - ruby-head
 matrix:
   allow_failures:
     - rvm: ruby-head
+    - env: "RAILS_VERSION=master"
 before_script:
   - curl -L https://codeclimate.com/downloads/test-reporter/test-reporter-latest-linux-amd64 > ./cc-test-reporter
   - chmod +x ./cc-test-reporter
   - ./cc-test-reporter before-build
 after_script:
-  # Preferably you will run test-reporter on branch update events. But 
-  # if you setup travis to build PR updates only, you don't need to run 
+  # Preferably you will run test-reporter on branch update events. But
+  # if you setup travis to build PR updates only, you don't need to run
   # the line below
   - if [ "$TRAVIS_PULL_REQUEST" == "false" ]; then ./cc-test-reporter after-build --exit-code $TRAVIS_TEST_RESULT; fi
-  # In the case where travis is setup to build PR updates only, 
+  # In the case where travis is setup to build PR updates only,
   # uncomment the line below
   # - ./cc-test-reporter after-build --exit-code $TRAVIS_TEST_RESULT

Gemfile

@@ -1,3 +1,16 @@
 source 'https://rubygems.org'
 
+rails_version = ENV['RAILS_VERSION'] || "default"
+rails =
+  case rails_version
+  when 'master'
+    { github: 'rails/rails' }
+  when 'default'
+    '>= 5.0'
+  else
+    "~> #{ENV['RAILS_VERSION']}"
+  end
+
+gem 'rails', rails
+
 gemspec

jsonapi-rails.gemspec

@@ -18,7 +18,7 @@ Gem::Specification.new do |spec|
   spec.add_dependency 'jsonapi-parser', '~> 0.1.0'
 
   spec.add_development_dependency 'rails', '~> 5.0'
-  spec.add_development_dependency 'sqlite3'
+  spec.add_development_dependency 'sqlite3', '~> 1.3.6'
   spec.add_development_dependency 'rake',        '~> 11.3'
   spec.add_development_dependency 'rspec-rails', '~> 3.5'
   spec.add_development_dependency 'with_model',  '~> 2.0'

spec/dummy/config/initializers/new_framework_defaults.rb

@@ -18,7 +18,9 @@
 Rails.application.config.active_record.belongs_to_required_by_default = true
 
 # Do not halt callback chains when a callback returns false. Previous versions had true.
-ActiveSupport.halt_callback_chains_on_return_false = false
+if Rails.version < '5.2'
+  ActiveSupport.halt_callback_chains_on_return_false = false
+end
 
 # Configure SSL options to enable HSTS with subdomains. Previous versions had false.
 Rails.application.config.ssl_options = { hsts: { subdomains: true } }

spec/dummy/config/initializers/sqlite3_fix.rb

@@ -0,0 +1,3 @@
+if Rails.version >= '5.1.0' && Rails.application.config.active_record.sqlite3.present?
+  Rails.application.config.active_record.sqlite3.represent_boolean_as_integer = true
+end