How to get Rails logger printing to the console stdout when running rspec

Question

Same as title  How to get Rails logger printing to the console stdout when running rspec  Eg   Rails logger info  I WANT this to go to console stdout when rspec is running  puts  Like how the puts function works    I still want Rails logger to go to log test log too

User · Answer

You can define a method in spec helper rb that sends a message both to Rails logger info and to puts and use that for debugging   def log test message      Rails logger info message      puts message end

User · Answer

Tail the log as a background job   amp   and it will interleave with rspec output   tail -f log test log  amp  bundle exec rspec

User · Answer

For Rails 4  see this answer   For Rails 3 x  configure a logger in config environments test rb     config logger   Logger new STDOUT  config logger level   Logger  ERROR   This will interleave any errors that are logged during testing to STDOUT  You may wish to route the output to STDERR or use a different log level instead   Sending these messages to both the console and a log file requires something more robust than Ruby s built-in Logger class  The logging gem will do what you want  Add it to your Gemfile  then set up two appenders in config environments test rb     logger   Logging logger  test   logger add appenders      Logging appenders stdout      Logging appenders file  example log     logger level    info config logger   logger

User · Answer

For Rails 4 x the log level is configured a bit different than in Rails 3 x  Add this to config environment test rb    Enable stdout logger config logger   Logger new STDOUT     Set log level config log level    ERROR   The logger level is set on the logger instance from config log level at  https   github com rails rails blob v4 2 4 railties lib rails application bootstrap rb L70  Environment variable  As a bonus  you can allow overwriting the log level using an environment variable with a default value like so     default  ERROR config log level   ENV fetch  LOG LEVEL    ERROR     And then running tests from shell     Log level  INFO  the value is uppercased in bootstrap rb    LOG LEVEL info rake test    Log level  ERROR   rake test

User · Answer

A solution that I like  because it keeps rspec output separate from actual rails log output  is to do the following    Open a second terminal window or tab  and arrange it so that you can see both the main terminal you re running rspec on as well as the new one  Run a tail command in the second window so you see the rails log in the test environment  By default this can be like   tail -f  RAILS APP DIR logs test log or tail -f  RAILS APP DIR logs test log for Window users Run your rspec suites   If you are running a multi-pane terminal like iTerm  this becomes even more fun and you have rspec and the test log output side by side

[ruby-on-rails] How to get Rails.logger printing to the console/stdout when running rspec?

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