some tests

test/arm/test_arm.rb

@@ -1,31 +1,8 @@
 require_relative 'helper'
 
-# 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
-#  adc add and bic eor orr rsb rsc sbc sub mov mvn cmn cmp teq tst b call bx swi strb
-
 class TestArmAsm < MiniTest::Test
-  # need Assembler and a block (see those classes) 
-  def setup
-    @machine = Arm::ArmMachine.new
-  end
+  include ArmHelper
 
-  # 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
-  # is reversed and in 4 bytes as ruby can only do 31 bits and so we can't test with just one int (?)
-  def assert_code code , op , should
-    assert_equal op ,  code.opcode
-    io = StringIO.new
-    code.assemble(io)
-    binary = io.string
-    assert_equal 4 , 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
   def test_b
     # the address is what an assembler calculates (a signed number for the amount of instructions), 
     # ie the relative (to pc) address -8 (pipeline) /4 so save space
@@ -101,12 +78,4 @@ class TestArmAsm < MiniTest::Test
     code = @machine.tst  :r1 , right: :r2
     assert_code code , :tst , [0x02,0x00,0x11,0xe1] #e1 11 00 02
   end
-  def test_mov
-    code = @machine.mov  :r0, right: 5
-    assert_code code , :mov , [0x05,0x00,0xa0,0xe3] #e3 a0 10 05
-  end
-  def test_mvn
-    code = @machine.mvn  :r1, right: 5
-    assert_code code , :mvn , [0x05,0x10,0xe0,0xe3] #e3 e0 10 05
-  end
 end

test/arm/test_logic.rb

@@ -1,6 +1,6 @@
 require_relative 'helper'
 
-class TestArmAsm < MiniTest::Test
+class TestLogic < MiniTest::Test
   include ArmHelper
 
   def test_adc
@@ -11,6 +11,10 @@ class TestArmAsm < MiniTest::Test
     code = @machine.add	 :r1 , left: :r1, right: :r3
     assert_code code , :add , [0x03,0x10,0x81,0xe0] #e0 81 10 03
   end
+  def test_add_lst
+    code = @machine.add( :r1 , left: :r2 , right: :r3 ,  shift_lsr: 8)
+    assert_code code , :add , [0x23,0x14,0x82,0xe0] #e0 82 14 23
+  end
   def test_and # inst eval doesn't really work with and
     code = @machine.and(  :r1 , left: :r2 , right: :r3)
     assert_code code , :and , [0x03,0x10,0x02,0xe0] #e0 01 10 03

test/arm/test_move.rb

@@ -0,0 +1,14 @@
+require_relative 'helper'
+
+class TestMoves < MiniTest::Test
+  include ArmHelper
+
+  def test_mov
+    code = @machine.mov  :r0, right: 5
+    assert_code code , :mov , [0x05,0x00,0xa0,0xe3] #e3 a0 10 05
+  end
+  def test_mvn
+    code = @machine.mvn  :r1, right: 5
+    assert_code code , :mvn , [0x05,0x10,0xe0,0xe3] #e3 e0 10 05
+  end
+end