Add OmniAuth v2 support

Close #62

CHANGELOG.md

@@ -9,6 +9,7 @@ project adheres to [Semantic Versioning](https://semver.org/)
 
 ### Changed
 
+* Breaking change: Support OmniAuth 2 (#82).
 * Potential breaking change: case of `Omniauth::Cas::VERSION` module (#76).
 
 ### Removed

omniauth-cas.gemspec

@@ -28,5 +28,5 @@ Gem::Specification.new do |gem|
 
   gem.add_dependency 'addressable', '~> 2.8'
   gem.add_dependency 'nokogiri',    '~> 1.12'
-  gem.add_dependency 'omniauth',    '~> 1.9'
+  gem.add_dependency 'omniauth',    '~> 2.1'
 end

spec/omniauth/strategies/cas_spec.rb

@@ -38,7 +38,7 @@
 
     let(:redirect_params) { "service=#{Rack::Utils.escape("http://example.org/auth/cas/callback?url=#{Rack::Utils.escape(return_url)}")}" }
 
-    before { get url, nil, request_env }
+    before { post url, nil, request_env }
 
     it { is_expected.to be_redirect }
 
@@ -95,7 +95,7 @@
     it { is_expected.to include('ssl' => true) }
   end
 
-  describe 'GET /auth/cas' do
+  describe 'POST /auth/cas' do
     let(:return_url) { 'http://example.org/admin/foo' }
 
     context 'with a referer' do
@@ -115,7 +115,7 @@
     end
   end
 
-  describe 'GET /auth/cas/callback' do
+  describe 'POST /auth/cas/callback' do
     context 'without a ticket' do
       subject { last_response }
 
@@ -253,9 +253,7 @@
         it_behaves_like 'successful validation'
       end
     end
-  end
 
-  describe 'POST /auth/cas/callback' do
     describe 'with a Single Sign-Out logoutRequest' do
       subject do
         post 'auth/cas/callback', logoutRequest: logoutRequest

spec/spec_helper.rb

@@ -13,6 +13,7 @@
 require 'webmock/rspec'
 
 OmniAuth.config.logger = Logger.new('/dev/null')
+OmniAuth.config.request_validation_phase = nil
 
 # This file was generated by the `rspec --init` command. Conventionally, all
 # specs live under a `spec` directory, which RSpec adds to the `$LOAD_PATH`.