Reduce test logging by default

These logs are rarely checked, and can take up a lot of disk space.

I wanted to reduce the dev log level too, but then realised it also affects the dev server stdout. So now the other suggestions seem like a good idea.. (eg link development.log to /dev/null)

Oh well, this change will at least reduce one source of unnecessary disk usage in a default installation, so I think worth doing.

config/environments/development.rb

@@ -27,6 +27,8 @@ Rails.application.configure do
   # To override this, set the appropriate locale in .env[.*] file.
   config.time_zone = ENV.fetch("TIMEZONE", "UTC")
 
+  # Log level for dev server stdout and development.log file.
+  # Set the desired level in .env.development.local file.
   config.log_level = ENV.fetch("RAILS_LOG_LEVEL", :debug)
 
   # Enable/disable caching. By default caching is disabled.

config/environments/test.rb

@@ -66,8 +66,8 @@ Rails.application.configure do
   # Tell Active Support which deprecation messages to disallow.
   config.active_support.disallowed_deprecation_warnings = []
 
-  # Change to reduce unecessary logging
-  config.log_level = ENV.fetch("RAILS_LOG_LEVEL", :debug)
+  # Reduced logging by default; set the desired level in .env.test.local file.
+  config.log_level = ENV.fetch("RAILS_LOG_LEVEL", :fatal)
 
   # Fail tests on deprecated code unless it's a known case to solve.
   Rails.application.deprecators.behavior = ->(message, callstack, deprecator) do