diff options
Diffstat (limited to 'activerecord/test/cases/adapters/postgresql/explain_test.rb')
| -rw-r--r-- | activerecord/test/cases/adapters/postgresql/explain_test.rb | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/activerecord/test/cases/adapters/postgresql/explain_test.rb b/activerecord/test/cases/adapters/postgresql/explain_test.rb new file mode 100644 index 0000000000..0b61f61572 --- /dev/null +++ b/activerecord/test/cases/adapters/postgresql/explain_test.rb @@ -0,0 +1,28 @@ +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 |