fix the tests with new block syntax

test/test_small_program.rb

@@ -9,39 +9,46 @@ require_relative 'helper'
 class TestSmallProg < MiniTest::Test
   # need a code generator, for arm 
   def setup
-    @generator = Asm::ArmAssembler.new
+    @program = Asm::Program.new
   end
 
   def test_loop
-    @generator.instance_eval {
-      mov r0, 5                #1
-      start = label!(:loop_start)
-      subs r0, r0, 1          #2
-      bne start         #3
-    	mov r7, 1               #4
-    	swi 0                   #5  5 instructions
-    }
+    @program.block do |main|
+      main.instance_eval do
+        mov r0, 5                #1
+        main.block do |start|
+          start.instance_eval do
+            subs r0, r0, 1       #2
+            bne start           #3
+          end
+          mov r7, 1               #4
+        	swi 0                   #5  5 instructions
+        end
+      end
+    end
     write( 5 , "loop" )
   end
 
   def test_hello
     hello = "Hello Raisa\n"
-    @generator.instance_eval {
-      mov r7, 4     # 4 == write
-      mov r0 , 1    # stdout
-      add r1 , pc , hello   # address of "hello Raisa"
-      mov r2 , hello.length
-    	swi 0         #software interupt, ie kernel syscall
-      mov r7, 1     # 1 == exit
-    	swi 0
-    }
+    @program.block do |main|
+      main.instance_eval do
+        mov r7, 4     # 4 == write
+        mov r0 , 1    # stdout
+        add r1 , pc , hello   # address of "hello Raisa"
+        mov r2 , hello.length
+      	swi 0         #software interupt, ie kernel syscall
+        mov r7, 1     # 1 == exit
+      	swi 0
+      end
+    end
     write(7 + hello.length/4 + 1 , 'hello') 
   end
 
   #helper to write the file
   def write len ,name
     writer = Elf::ObjectWriter.new(Elf::Constants::TARGET_ARM)
-    assembly = @generator.assemble_to_string
+    assembly = @program.assemble_to_string
     assert_equal len * 4 , assembly.length 
     writer.set_text assembly
     writer.save("#{name}_test.o")