TraceCode

Code tracing library for single method call, or tiny coverage tool

Installation

Add this line to your application's Gemfile:

gem 'trace_code'

And then execute:

$ bundle

Or install it yourself as:

$ gem install trace_code

Usage

Block:

TraceCode.start(FooClass, BarClass, ..., color: :dark) do
  # method call
end

Method:

TraceCode.start(...)
# method call
TraceCode.finish

Methods:

TraceCode.start - start trace
TraceCode.finish - finish trace

TraceCode.start Options:

classes/modules - trace targets
:color - :dark, :light, false, true(=:dark); default true
:output - IO object; default $stdout

Example

Code:

class FoosControllerTest < ActionController::TestCase
  sub_test_case 'TraceCode sample' do
    test 'trace the index action' do
      TraceCode.start(FoosController) do
        get :index
      end
      assert_response :success
    end
  end
end

Output:

$ bin/rails test test/controllers/foos_controller_test.rb
Loaded suite rake
Started
/.../app/controllers/foos_controller.rb:
    1: class FoosController < ApplicationController
    2:         :
               :
        (evaluated lines are highlighted)
               :
  254:         :
  255: end
.

Finished in 1.404759 seconds.
------------------------------------------------------------------------------
1 tests, 1 assertions, 0 failures, 0 errors, 0 pendings, 0 omissions, 0 notifications
100% passed
------------------------------------------------------------------------------
0.32 tests/s, 3.13 assertions/s

Development

After checking out the repo, run bin/setup to install dependencies. Then, run rake spec to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and tags, and push the .gem file to rubygems.org.

Contributing

Bug reports and pull requests are welcome on GitHub at https://github.com/[USERNAME]/trace_code.

License

The gem is available as open source under the terms of the MIT License.