class Mysql2ExplainTest

Public Instance Methods

test_explain_for_one_query() click to toggle source
# File activerecord/test/cases/adapters/mysql2/explain_test.rb, line 10
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 %r(developers |.* const), explain
end
test_explain_with_eager_loading() click to toggle source
# File activerecord/test/cases/adapters/mysql2/explain_test.rb, line 16
def test_explain_with_eager_loading
  explain = Developer.where(id: 1).includes(:audit_logs).explain
  assert_match %(EXPLAIN for: SELECT `developers`.* FROM `developers` WHERE `developers`.`id` = 1), explain
  assert_match %r(developers |.* const), explain
  assert_match %(EXPLAIN for: SELECT `audit_logs`.* FROM `audit_logs` WHERE `audit_logs`.`developer_id` = 1), explain
  assert_match %r(audit_logs |.* ALL), explain
end