folded salama-arm in

test/arm/helper.rb

@@ -0,0 +1,46 @@
+require 'rubygems'
+require 'bundler'
+begin
+  Bundler.setup(:default, :development)
+rescue Bundler::BundlerError => e
+  $stderr.puts e.message
+  $stderr.puts "Run `bundle install` to install missing gems"
+  exit e.status_code
+end
+
+if ENV['CODECLIMATE_REPO_TOKEN']
+  require "codeclimate-test-reporter"
+  CodeClimate::TestReporter.start
+end
+
+require "minitest/autorun"
+require "minitest/unit"
+
+$LOAD_PATH.unshift(File.join(File.dirname(__FILE__), '..', 'test'))
+
+require 'salama'
+
+# try  to test that the generation of basic instructions works
+# one instruction at a time, reverse testing from objdump --demangle -Sfghxp
+# tests are named as per assembler code, ie test_mov testing mov instruction
+
+module ArmHelper
+  def setup
+    @machine = Arm::ArmMachine
+  end
+
+  # code is what the generator spits out, at least one instruction worth (.first)
+  # the op code is wat was witten as assembler in the first place and the binary result
+  def assert_code code , op , should
+    assert_equal op ,  code.opcode
+    io = StringIO.new
+    code.assemble(io)
+    binary = io.string
+    assert_equal should.length , binary.length , "code length wrong for #{code.inspect}"
+    index = 0
+    binary.each_byte do |byte |
+      assert_equal should[index] , byte , "byte #{index} 0x#{should[index].to_s(16)} != 0x#{byte.to_s(16)}"
+      index += 1
+    end
+  end
+end