Expands the set of ruby versions

.gitignore

@@ -16,3 +16,5 @@ spec/reports
 test/tmp
 test/version_tmp
 tmp
+Gemfile.lock
+gemfiles/*.lock

.rubocop.yml

@@ -0,0 +1,3 @@
+AllCops:
+  TargetRubyVersion: 2.7
+  SuggestExtensions: false

.ruby-gemset

@@ -0,0 +1 @@
+esendex-sdk

.ruby-version

@@ -0,0 +1 @@
+2.7.2

.travis.yml

@@ -1,6 +1,29 @@
 language: ruby
 rvm:
-  - "2.2"
-  - "2.3"
-  - "2.4"
+  - 2.6
+  - 2.7.2
+  - 3.0
+os: linux
+sudo: true
+
 script: bundle exec rspec
+
+cache:
+  bundler: false
+
+gemfile:
+  - gemfiles/rails_52.gemfile
+  - gemfiles/rails_60.gemfile
+  - gemfiles/rails_61.gemfile
+
+jobs:
+  include:
+    - rvm: 2.2
+      gemfile: gemfiles/rails_51.gemfile
+    - rvm: 2.3
+      gemfile: gemfiles/rails_52.gemfile
+    - rvm: 2.4
+      gemfile: gemfiles/rails_52.gemfile
+  exclude:
+    - rvm: 3.0
+      gemfile: gemfiles/rails_52.gemfile

Gemfile

@@ -1,20 +1,20 @@
-source "http://rubygems.org"
+source 'http://rubygems.org'
 
 gemspec
 
 group :development, :test do
-  gem 'rails', "~> 4.1.16"
-  gem 'rake', '~> 12.2.1'
-  gem 'rspec'
-  gem 'rspec-rails'
-  gem 'rspec-collection_matchers'
-  gem 'rb-inotify', :require => false
-  gem 'rb-fsevent', :require => false
+  gem 'activeresource'
+  gem 'growl'
   gem 'guard'
   gem 'guard-rspec'
-  gem 'growl'
-  gem 'wdm', "<= 0.0.3", :platforms => [:mswin, :mingw], :require => false
-  gem 'activeresource'
-  gem 'rails-observers', '0.1.2'
-  gem 'listen', '~> 3.0.0'
+  gem 'listen'
+  gem 'rails', '~> 6.0'
+  gem 'rails-observers'
+  gem 'rb-fsevent', require: false
+  gem 'rb-inotify', require: false
+  gem 'rspec'
+  gem 'rspec-collection_matchers'
+  gem 'rspec-rails'
+  gem 'rubocop'
+  gem 'wdm', platforms: %i[mswin mingw], require: false
 end

esendex.gemspec

@@ -1,20 +1,19 @@
-# -*- encoding: utf-8 -*-
-require File.expand_path('../lib/esendex/version', __FILE__)
+require File.expand_path('lib/esendex/version', __dir__)
 
 Gem::Specification.new do |gem|
-  gem.authors      = ["Adam Bird"]
-  gem.email        = ["support@esendex.com"]
-  gem.description  = "Send SMS from your application using the Esendex API"
-  gem.summary      = "Gem for interacting with the Esendex API"
-  gem.homepage     = "http://developers.esendex.com"
+  gem.authors      = ['Adam Bird']
+  gem.email        = ['support@esendex.com']
+  gem.description  = 'Send SMS from your application using the Esendex API'
+  gem.summary      = 'Gem for interacting with the Esendex API'
+  gem.homepage     = 'http://developers.esendex.com'
 
-  gem.files         = Dir["{app,config,lib}/**/*"]
-  gem.test_files    = Dir["spec/**/*"]
-  gem.extra_rdoc_files = ["licence.txt", "readme.md"]
-  gem.name          = "esendex"
-  gem.require_paths = ["lib"]
+  gem.files         = Dir['{app,config,lib}/**/*']
+  gem.test_files    = Dir['spec/**/*']
+  gem.extra_rdoc_files = ['licence.txt', 'readme.md']
+  gem.name          = 'esendex'
+  gem.require_paths = ['lib']
   gem.version       = Esendex::VERSION
-  gem.required_ruby_version = "~> 2.2"
-  gem.add_runtime_dependency "nestful", ["~> 0.0.8"]
-  gem.add_runtime_dependency "nokogiri", ["~> 1.6.8.1"]
+  gem.required_ruby_version = '>= 2.2'
+  gem.add_runtime_dependency 'nestful', ['~> 0.0.8']
+  gem.add_runtime_dependency 'nokogiri'
 end

gemfiles/rails_51.gemfile

@@ -0,0 +1,20 @@
+source 'http://rubygems.org'
+
+gemspec path: '../'
+
+group :development, :test do
+  gem 'activeresource'
+  gem 'growl'
+  gem 'guard'
+  gem 'guard-rspec'
+  gem 'listen'
+  gem 'rails', '>= 5.1', '< 5.2'
+  gem 'rails-observers'
+  gem 'rb-fsevent', require: false
+  gem 'rb-inotify', require: false
+  gem 'rspec'
+  gem 'rspec-collection_matchers'
+  gem 'rspec-rails'
+  gem 'rubocop'
+  gem 'wdm', platforms: %i[mswin mingw], require: false
+end

gemfiles/rails_52.gemfile

@@ -0,0 +1,20 @@
+source 'http://rubygems.org'
+
+gemspec path: '../'
+
+group :development, :test do
+  gem 'activeresource'
+  gem 'growl'
+  gem 'guard'
+  gem 'guard-rspec'
+  gem 'listen'
+  gem 'rails', '>= 5.2', '< 6.0'
+  gem 'rails-observers'
+  gem 'rb-fsevent', require: false
+  gem 'rb-inotify', require: false
+  gem 'rspec'
+  gem 'rspec-collection_matchers'
+  gem 'rspec-rails'
+  gem 'rubocop'
+  gem 'wdm', platforms: %i[mswin mingw], require: false
+end

gemfiles/rails_60.gemfile

@@ -0,0 +1,20 @@
+source 'http://rubygems.org'
+
+gemspec path: '../'
+
+group :development, :test do
+  gem 'activeresource'
+  gem 'growl'
+  gem 'guard'
+  gem 'guard-rspec'
+  gem 'listen'
+  gem 'rails', '>= 6.0', '< 6.1'
+  gem 'rails-observers'
+  gem 'rb-fsevent', require: false
+  gem 'rb-inotify', require: false
+  gem 'rspec'
+  gem 'rspec-collection_matchers'
+  gem 'rspec-rails'
+  gem 'rubocop'
+  gem 'wdm', platforms: %i[mswin mingw], require: false
+end

gemfiles/rails_61.gemfile

@@ -0,0 +1,20 @@
+source 'http://rubygems.org'
+
+gemspec path: '../'
+
+group :development, :test do
+  gem 'activeresource'
+  gem 'growl'
+  gem 'guard'
+  gem 'guard-rspec'
+  gem 'listen'
+  gem 'rails', '>= 6.1', '< 6.2'
+  gem 'rails-observers'
+  gem 'rb-fsevent', require: false
+  gem 'rb-inotify', require: false
+  gem 'rspec'
+  gem 'rspec-collection_matchers'
+  gem 'rspec-rails'
+  gem 'rubocop'
+  gem 'wdm', platforms: %i[mswin mingw], require: false
+end