Add code coverage

.gitignore

@@ -1,3 +1,5 @@
+coverage/
+coverage.data
 *.gem
 .bundle
 Gemfile.lock

Rakefile

@@ -7,3 +7,19 @@ Rake::TestTask.new(:test) do |test|
 end
 
 task default: [:test]
+
+namespace :cover_me do
+  desc "Generates and opens code coverage report."
+  task :report do
+    require 'cover_me'
+    CoverMe.complete!
+  end
+end
+
+task :test do
+  Rake::Task['cover_me:report'].invoke
+end
+
+task :spec do
+  Rake::Task['cover_me:report'].invoke
+end

setler.gemspec

@@ -21,4 +21,5 @@ Gem::Specification.new do |s|
   s.add_development_dependency('sqlite3')
   s.add_development_dependency('activerecord')
   s.add_development_dependency('rake')
+  s.add_development_dependency('cover_me')
 end

test/test_helper.rb

@@ -1,3 +1,4 @@
+require 'cover_me'
 require 'rubygems'
 
 require 'bundler'