blob: 416f84cb3822589f86623d3c95c5559c0df21971 (
plain) (
tree)
|
|
require "cases/helper"
require 'models/developer'
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
assert_match %(Index Scan using developers_pkey on developers), 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 %(Index Scan using developers_pkey on developers), explain
assert_match %(EXPLAIN for: SELECT "audit_logs".* FROM "audit_logs" WHERE "audit_logs"."developer_id" IN (1)), explain
assert_match %(Seq Scan on audit_logs), explain
end
end
end
end
end
|