cleanup, requires, namespacing to actually get it to work

test/code_generator.rb

@@ -1,6 +1,6 @@
 
 if (__FILE__ == $0)
-  gen = Asm::ARMCodeGenerator.new
+  gen = Asm::ArmCodeGenerator.new
 
   gen.instance_eval {
     mov r0, 5

test/helper.rb

@@ -8,7 +8,7 @@ end
 
 SimpleCov.configure do
   clean_filters
-  load_adapter 'test_frameworks'
+  load_profile 'test_frameworks'
 end
 
 ENV["COVERAGE"] && SimpleCov.start do
@@ -23,13 +23,9 @@ rescue Bundler::BundlerError => e
   $stderr.puts "Run `bundle install` to install missing gems"
   exit e.status_code
 end
-require 'minitest/unit'
+require "minitest/autorun"
 
-$LOAD_PATH.unshift(File.dirname(__FILE__))
 $LOAD_PATH.unshift(File.join(File.dirname(__FILE__), '..', 'lib'))
+$LOAD_PATH.unshift(File.join(File.dirname(__FILE__), '..', 'test'))
+
 require 'crystal'
-
-class MiniTest::Unit::TestCase
-end
-
-MiniTest::Unit.autorun