install metric_fu

metric_fu

Installation

gem install metric_fu

Gem

 

From your Gemfile ,install these gems for test and development environment

group :test ,:development do

gem "metric_fu"

gem 'simplecov'

gem 'simplecov-rcov-text'

gem 'roodi' #these gem ensure that you can run roodi or roodi . in shell

end

Require

 

From your Rakefile

 require 'churn'

Usage

 

From your application root. Running via Rake is still supported.

metric_fu

See:

• metric_fu --help for more options

Run

run "rake -T", you can see all of Commands that you can use , for example:

rake metrics:all 
rake metrics:cane
rake metrics:churn
rake metrics:flay
rake metrics:flog
rake metrics:hotspots
rake metrics:only
rake metrics:rails_best_practices
rake metrics:reek
rake metrics:roodi
rake metrics:saikuro
rake metrics:stats 

Run these commands , you will get some reports at "server/tmp/metric_fu/output" and yml files at "server/tmp/metric_fu/_data"

In shell 

rspec .

Run the command , you will run all testings include all of engine and get a value about test coverage

 

run other metric_fu features: 

flog feature/ #measuring code complexity

flay feature/ #find duplicate (including copy / paste and structure)

reek .   or   reek features/     #spot code smells

roodi  or  roodi .          #find a large number of general issues

rake churn     #Identifies the file changes too frequently

rails_best_practices .      #code matrix tool

cane             #code quality threshold violation

Extra

    saikuro - cyclomatic complexity measure

    hotspot - hot code analysis

Link

metric_fu : https://github.com/metricfu/metric_fu

 

reek, a code smells detector for ruby : http://silkandspinach.net/2008/09/23/reek-a-code-smells-detector-for-ruby/

 

How To Score Your Rails App's Complexity Before Refactoring : http://www.railsinside.com/tutorials/487-how-to-score-your-rails-apps-complexity-before-refactoring.html