start adding tests

Rakefile

@@ -1 +1,7 @@
 require "bundler/gem_tasks"
+require "rake/testtask"
+
+Rake::TestTask.new do |t|
+  t.test_files = FileList['test/*_test.rb']
+  t.verbose = true
+end

test/helper.rb

@@ -1,18 +1,11 @@
 require 'rubygems'
 require 'bundler'
-begin
 Bundler.setup(:default, :development)
-rescue Bundler::BundlerError => e
-  $stderr.puts e.message
-  $stderr.puts "Run `bundle install` to install missing gems"
-  exit e.status_code
-end
-require 'test/unit'
-require 'shoulda'
+
+require 'minitest/spec'
+require 'minitest/autorun'
 
 $LOAD_PATH.unshift(File.join(File.dirname(__FILE__), '..', 'lib'))
 $LOAD_PATH.unshift(File.dirname(__FILE__))
-require 'X11'
 
-class Test::Unit::TestCase
-end
+require 'X11'

test/packet_test.rb

@@ -0,0 +1,50 @@
+require File.expand_path('../helper', __FILE__)
+
+class MockSocket
+  def initialize(packet)
+    @packet = packet
+  end
+
+  def read(amount)
+    @packet.slice!(0..amount-1)
+  end
+end
+
+class Child < X11::Packet::BasePacket
+  field :name, Uint16, :length
+  field :name, String8, :string
+end
+
+class Parent < X11::Packet::BasePacket
+  field :a, Uint8
+  field :b, Uint16
+  field :c, Uint32
+
+  field :d, Uint16, :length
+  field :d, String8, :string
+
+  field :children, Uint16, :length
+  field :children, Child, :list
+end
+
+describe X11::Packet::BasePacket do
+  it "should create and read a packet" do
+    children = []
+    children << Child.create("#1")
+    children << Child.create("#2")
+    children << Child.create("#3")
+
+    packet = Parent.create(1,2,3,"Hello World", children)
+    socket = MockSocket.new(packet)
+    reader = Parent.read(socket)
+
+    reader.a.must_equal 1
+    reader.b.must_equal 2
+    reader.c.must_equal 3
+    reader.d.must_equal "Hello World"
+
+    reader.children.shift.name.must_equal("#1")
+    reader.children.shift.name.must_equal("#2")
+    reader.children.shift.name.must_equal("#3")
+  end
+end