Added CI

.github/workflows/test.yml

@@ -0,0 +1,22 @@
+name: CI
+
+on: [push, pull_request]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        ruby:
+          - '2.6'
+    steps:
+    - uses: actions/checkout@v2
+    - name: Set up Ruby
+      uses: ruby/setup-ruby@v1
+      with:
+        bundler-cache: true
+        ruby-version: ${{ matrix.ruby }}
+    - name: Install dependencies
+      run: bundle install --jobs 4 --retry 3
+    - name: Run tests
+      run: bundle exec rspec spec

cursor_pagination.gemspec

@@ -17,15 +17,15 @@ Gem::Specification.new do |spec|
   spec.add_dependency "actionpack", ['>= 3.1']
   spec.add_development_dependency "rspec-rails"
   spec.add_development_dependency "railties"
-  spec.add_development_dependency "capybara"
-  spec.add_development_dependency "sqlite3-ruby"
+  spec.add_development_dependency "capybara", '~> 2.18.0'
+  spec.add_development_dependency "sqlite3"
   spec.add_development_dependency "database_cleaner", ['< 1.1.0']
 
   spec.files         = `git ls-files`.split($/)
   spec.executables   = spec.files.grep(%r{^bin/}) { |f| File.basename(f) }
   spec.test_files    = spec.files.grep(%r{^(test|spec|features)/})
   spec.require_paths = ["lib"]
 
-  spec.add_development_dependency "bundler", "~> 1.3"
+  spec.add_development_dependency "bundler"
   spec.add_development_dependency "rake"
 end

lib/cursor_pagination/active_record_extension.rb

@@ -12,7 +12,8 @@ def inherited_with_cursor_pagination(kls) #:nodoc:
           inherited_without_cursor_pagination kls
           kls.send(:include, CursorPagination::ActiveRecordModelExtension) if kls.superclass == ActiveRecord::Base
         end
-        alias_method_chain :inherited, :cursor_pagination
+        alias_method :inherited_without_cursor_pagination, :inherited
+        alias_method :inherited, :inherited_with_cursor_pagination
       end
 
       # Existing subclasses pick up the model extension as well

spec/fake_app/active_record/database.yml

@@ -0,0 +1,10 @@
+default: &default
+  adapter: sqlite3
+
+development:
+  <<: *default
+  database: memory_development
+
+test:
+  <<: *default
+  database: memory_test

spec/fake_app/active_record/models.rb

@@ -4,8 +4,10 @@ class Entity < ActiveRecord::Base
 end
 
 #migrations
-class CreateAllTables < ActiveRecord::Migration
+class CreateAllTables < ActiveRecord::Migration[6.0]
   def self.up
+    return if ActiveRecord::Base.connection.table_exists? 'entities'
+
     create_table :entities do |t|
       t.integer :custom
       t.datetime :custom_time

spec/fake_app/rails.rb

@@ -2,7 +2,15 @@
 require 'action_controller/railtie'
 require 'action_view/railtie'
 
-require 'fake_app/active_record/config' if defined? ActiveRecord
+if defined? ActiveRecord
+  ActiveRecord::Base.establish_connection(
+    YAML.safe_load(
+      ERB.new(
+        File.read('spec/fake_app/active_record/database.yml')
+      ).result, [], [], true
+    )['test']
+  )
+end
 
 # config
 app = Class.new(Rails::Application)

spec/helpers/cursor_pagination_helper_spec.rb

@@ -1,6 +1,6 @@
 require 'spec_helper'
 
-describe CursorPagination::ActionViewHelper do
+describe CursorPagination::ActionViewHelper, type: :helper do
 
   include_context "entities"
 

spec/models/entity_spec.rb

@@ -159,15 +159,15 @@
 
     context "with direct sql" do
       specify do
-        target_sql = "(\"entities\".\"id\" < 1 OR \"entities\".\"id\" = 1 AND (\"entities\".\"custom\" > 2 OR \"entities\".\"custom\" = 2 AND \"entities\".\"custom_time\" > '2013-09-02 14:32:42.000000'))"
+        target_sql = "(\"entities\".\"id\" < 1 OR \"entities\".\"id\" = 1 AND (\"entities\".\"custom\" > 2 OR \"entities\".\"custom\" = 2 AND \"entities\".\"custom_time\" > '2013-09-02 14:32:42'))"
         where = Entity.send(:_cursor_to_where, columns, cursor_value)
         where.to_sql.should eq target_sql
       end
     end
 
     context "with reversed sql" do
       specify do
-        target_sql = "(\"entities\".\"id\" > 1 OR \"entities\".\"id\" = 1 AND (\"entities\".\"custom\" < 2 OR \"entities\".\"custom\" = 2 AND \"entities\".\"custom_time\" <= '2013-09-02 14:32:42.000000'))"
+        target_sql = "(\"entities\".\"id\" > 1 OR \"entities\".\"id\" = 1 AND (\"entities\".\"custom\" < 2 OR \"entities\".\"custom\" = 2 AND \"entities\".\"custom_time\" <= '2013-09-02 14:32:42'))"
         where = Entity.send(:_cursor_to_where, columns, cursor_value, true)
         where.to_sql.should eq target_sql
       end

spec/spec_helper.rb

@@ -15,6 +15,10 @@
 #
 # See http://rubydoc.info/gems/rspec-core/RSpec/Core/Configuration
 RSpec.configure do |config|
+  config.include Rails.application.routes.url_helpers
+
+  config.include Capybara::DSL
+
   config.treat_symbols_as_metadata_keys_with_true_values = true
   config.run_all_when_everything_filtered = true
   config.filter_run :focus