enforce code covereage on every run and with low overhead

had to remove gemspec from Gemfile or the file would be uncovereage since it is loaded before
coverage starts

Gemfile

@@ -1,12 +1,11 @@
 source 'https://rubygems.org'
-gemspec
 
 gem 'rake', '10.1.0'
 gem 'rack', '~> 1.6'
 gem 'minitest'
 gem "yard", "~> 0.8.7.3"
 gem 'jeweler', '~> 1.8'
-gem 'simplecov'
+gem 'single_cov'
 
 group :development do
   gem "faker", "~> 1.2.0"

dogstatsd-ruby.gemspec

@@ -1,4 +1,4 @@
-$:.unshift File.expand_path("../lib", __FILE__)
+$LOAD_PATH.unshift File.expand_path("../lib", __FILE__)
 require "datadog/statsd"
 
 Gem::Specification.new do |s|

lib/datadog/statsd.rb

@@ -77,11 +77,11 @@ class Statsd
     class << self
       # Set to a standard logger instance to enable debug logging.
       attr_accessor :logger
-    end
 
-    # Return the current version of the library.
-    def self.VERSION
-      "3.2.0"
+      # Return the current version of the library.
+      def VERSION
+        "3.2.0"
+      end
     end
 
     # @param [String] host your statsd host

spec/helper.rb

@@ -1,12 +1,13 @@
 require 'bundler/setup'
+
+require 'single_cov'
+SingleCov.setup :minitest
+
 require 'minitest/autorun'
 require 'faker'
 
 $LOAD_PATH.unshift File.expand_path("../../lib", __FILE__)
 
-require 'simplecov'
-SimpleCov.start
-
 require 'datadog/statsd'
 require 'logger'
 

spec/statsd_spec.rb

@@ -3,6 +3,8 @@
 require 'stringio'
 require 'mocha/mini_test'
 
+SingleCov.covered! file: 'lib/datadog/statsd.rb'
+
 describe Datadog::Statsd do
   class Datadog::Statsd
     # we need to stub this
@@ -14,6 +16,12 @@ class Datadog::Statsd
     @statsd.socket = FakeUDPSocket.new
   end
 
+  describe ".VERSION" do
+    it "has a version" do
+      Datadog::Statsd.VERSION.must_match /^\d+\.\d+\.\d+/
+    end
+  end
+
   describe "#initialize" do
     it "should set the host and port" do
       @statsd.host.must_equal 'localhost'
@@ -363,6 +371,13 @@ def helper_time_return
     end
   end
 
+  describe "#distribution" do
+    it "send a message with d type" do
+      @statsd.distribution('begrutten-suffusion', 536)
+      @statsd.socket.recv.must_equal ['begrutten-suffusion:536|d']
+    end
+  end
+
   describe "with namespace" do
     before { @statsd.namespace = 'service' }