Add simplecov for coverage reports

.gitignore

@@ -4,4 +4,5 @@ pkg/*
 .idea
 .rspec
 .rvmrc
+coverage
 Gemfile.lock

Rakefile

@@ -2,4 +2,4 @@ Dir[File.expand_path("tasks/**/*.rb")].each do |task_file|
   require task_file
 end
 
-task :default => [ :rspec ]
+task :default => [ :spec ]

hamster.gemspec

@@ -15,4 +15,5 @@ Gem::Specification.new do |s|
   s.require_path     = "lib"
   s.files            = Dir["lib/**/*", "spec/**/*", "tasks/**/*", "Rakefile"] + s.extra_rdoc_files
   s.add_development_dependency("rspec", "~> 2")
+  s.add_development_dependency("simplecov", "~> 0.2")
 end

spec/spec_helper.rb

@@ -1,5 +1,14 @@
 # Common spec-related code goes here
 
+require 'simplecov'
+SimpleCov.start 'rails'
+SimpleCov.at_exit do
+  SimpleCov.result.format!
+  open("#{SimpleCov.coverage_dir}/covered_percent", "w") do |f|
+    f.puts SimpleCov.result.covered_percent.to_s
+  end
+end
+
 STACK_OVERFLOW_DEPTH = if RUBY_ENGINE == "ruby"
   def calculate_stack_overflow_depth(n)
     calculate_stack_overflow_depth(n + 1)

tasks/spec.rb

@@ -0,0 +1,13 @@
+require 'rspec/core/rake_task'
+
+desc "Run specifications"
+RSpec::Core::RakeTask.new(:spec)
+
+# task :spec do
+#   covered_threshold = 100
+#   covered_percent = Float(File.read("coverage/covered_percent"))
+#   if covered_percent < covered_threshold
+#     $stderr.puts ""
+#     raise "Insufficient unit-test coverage (#{covered_percent} < #{covered_threshold})"
+#   end
+# end