Contents

require "cases/helper"
require 'models/developer'
require 'models/computer'

module ActiveRecord
  module ConnectionAdapters
    class PostgreSQLAdapter
      class ExplainTest < ActiveRecord::TestCase
        fixtures :developers

        def test_explain_for_one_query
          explain = Developer.where(:id => 1).explain
          assert_match %(EXPLAIN for: SELECT "developers".* FROM "developers" WHERE "developers"."id" = $1), explain
          assert_match %(QUERY PLAN), explain
        end

        def test_explain_with_eager_loading
          explain = Developer.where(:id => 1).includes(:audit_logs).explain
          assert_match %(QUERY PLAN), explain
          assert_match %(EXPLAIN for: SELECT "developers".* FROM "developers" WHERE "developers"."id" = $1), explain
          assert_match %(EXPLAIN for: SELECT "audit_logs".* FROM "audit_logs" WHERE "audit_logs"."developer_id" IN (1)), explain
        end
      end
    end
  end
end

Version data entries

2 entries across 2 versions & 1 rubygems

Version	Path
activejob-lock-0.0.2	rails/activerecord/test/cases/adapters/postgresql/explain_test.rb
activejob-lock-0.0.1	rails/activerecord/test/cases/adapters/postgresql/explain_test.rb