activerecord/test/cases/adapters/postgresql/statement_pool_test.rb


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require 'cases/helper'

module ActiveRecord
  module ConnectionAdapters
    class PostgreSQLAdapter < AbstractAdapter
      class InactivePGconn
        def query(*args)
          raise PGError
        end

        def status
          PGconn::CONNECTION_BAD
        end
      end

      class StatementPoolTest < ActiveRecord::PostgreSQLTestCase
        if Process.respond_to?(:fork)
          def test_cache_is_per_pid
            cache = StatementPool.new nil, 10
            cache['foo'] = 'bar'
            assert_equal 'bar', cache['foo']

            pid = fork {
              lookup = cache['foo'];
              exit!(!lookup)
            }

            Process.waitpid pid
            assert $?.success?, 'process should exit successfully'
          end
        end

        def test_dealloc_does_not_raise_on_inactive_connection
          cache = StatementPool.new InactivePGconn.new, 10
          cache['foo'] = 'bar'
          assert_nothing_raised { cache.clear }
        end
      end
    end
  end
end