rails--rails/activerecord/test/cases/connection_management_test.rb

require "cases/helper"

module ActiveRecord
  module ConnectionAdapters
    class ConnectionManagementTest < ActiveRecord::TestCase
      class App
        attr_reader :calls
        def initialize
          @calls = []
        end

        def call(env)
          @calls << env
          [200, {}, ['hi mom']]
        end
      end

      def setup
        @env = {}
        @app = App.new
        @management = ConnectionManagement.new(@app)

        # make sure we have an active connection
        assert ActiveRecord::Base.connection
        assert ActiveRecord::Base.connection_handler.active_connections?
      end

      def test_app_delegation
        manager = ConnectionManagement.new(@app)

        manager.call @env
        assert_equal [@env], @app.calls
      end

      def test_connections_are_active_after_call
        @management.call(@env)
        assert ActiveRecord::Base.connection_handler.active_connections?
      end

      def test_body_responds_to_each
        _, _, body = @management.call(@env)
        bits = []
        body.each { |bit| bits << bit }
        assert_equal ['hi mom'], bits
      end

      def test_connections_are_cleared_after_body_close
        _, _, body = @management.call(@env)
        body.close
        assert !ActiveRecord::Base.connection_handler.active_connections?
      end

      def test_active_connections_are_not_cleared_on_body_close_during_test
        @env['rack.test'] = true
        _, _, body = @management.call(@env)
        body.close
        assert ActiveRecord::Base.connection_handler.active_connections?
      end

      test "doesn't clear active connections when running in a test case" do
        @env['rack.test'] = true
        @management.call(@env)
        assert ActiveRecord::Base.connection_handler.active_connections?
      end
    end
  end
end