add minitest and other development dependencies, start testing

Gemfile

@@ -1,2 +1,3 @@
-source :rubygems
-gem 'httparty'
+source "https://rubygems.org"
+
+gemspec

Rakefile

@@ -0,0 +1,8 @@
+require 'rake/testtask'
+
+Rake::TestTask.new do |t|
+  t.libs << "test" << "lib"
+  t.test_files = FileList['test/*_test.rb']
+end
+
+task :default => :test

ducksboard.gemspec

@@ -11,6 +11,8 @@ Gem::Specification.new do |s|
   s.required_ruby_version = '>= 1.8.7'
 
   s.add_runtime_dependency 'httparty', '~> 0.8', '>= 0.8.1'
+  s.add_development_dependency 'rake', '~> 10.0'
+  s.add_development_dependency 'minitest', '~> 4.6.2'
 
   s.post_install_message = <<-DESC
   Quack! (in real-time)"

lib/ducksboard.rb

@@ -2,7 +2,9 @@
 
 module Ducksboard
   class << self ; attr_accessor :api_key end
-  @api_key = ENV['DUCKSBOARD_API_KEY']
+  def self.api_key
+    @api_key ||= ENV['DUCKSBOARD_API_KEY']
+  end
 end
 
 require 'ducksboard/widget'

test/ducksboard_test.rb

@@ -0,0 +1,13 @@
+require 'minitest_helper'
+
+describe Ducksboard do
+  it "should get api key from env" do
+    ENV['DUCKSBOARD_API_KEY'] = "123"
+    Ducksboard.api_key.must_equal "123"
+  end
+
+  it "can set api key directly" do
+    Ducksboard.api_key = "123"
+    Ducksboard.api_key.must_equal "123"
+  end
+end

test/minitest_helper.rb

@@ -0,0 +1,4 @@
+require 'minitest/spec'
+require 'minitest/autorun'
+
+require 'ducksboard'