Merge pull request rails#52130 from rails/fxn/trx-transaction-guide

Document test transactions w/ multiple databases
skipkayhil · Jun 15, 2024 · 23729ce · 23729ce
2 parents 3342f13 + ec056dd
commit 23729ce
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/guides/source/testing.md b/guides/source/testing.md
@@ -429,6 +429,12 @@ class MyTest < ActiveSupport::TestCase
 end
 ```
 
+If there are [multiple writing databases](active_record_multiple_databases.html)
+in place, tests are wrapped in as many respective transactions, and all of them
+are rolled back.
+
+#### Opting-out of Test Transactions
+
 Individual test cases can opt-out:
 
 ```ruby