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diff --git a/doc/development/testing.md b/doc/development/testing.md index cf3ea2ccfc2..fc84932354b 100644 --- a/doc/development/testing.md +++ b/doc/development/testing.md @@ -479,6 +479,11 @@ slowest test files and try to improve them. run the suite against MySQL for tags, `master`, and any branch that includes `mysql` in the name. - On EE, the test suite always runs both PostgreSQL and MySQL. +- Rails logging to `log/test.log` is disabled by default in CI [for + performance reasons][logging]. To override this setting, provide the + `RAILS_ENABLE_TEST_LOG` environment variable. + +[logging]: https://jtway.co/speed-up-your-rails-test-suite-by-6-in-1-line-13fedb869ec4 ## Spinach (feature) tests |