diff --git a/lib/ast/while_expression.rb b/lib/ast/while_expression.rb
index 904f8432..fbe9f412 100644
--- a/lib/ast/while_expression.rb
+++ b/lib/ast/while_expression.rb
@@ -18,7 +18,7 @@ module Ast
       ret = while_block.new_block "#{into.name}_return"
       cond_val = condition.compile(context , while_block)
       puts "compiled while condition #{cond_val.inspect}"
-      while_block.b ret , condition_code: cond_val.operator
+      while_block.b ret , condition_code: cond_val.not_operator
       last = nil
       body.each do |part|
         last = part.compile(context , while_block )
diff --git a/test/fragments/helper.rb b/test/fragments/helper.rb
index 707c25c2..2f046b9c 100644
--- a/test/fragments/helper.rb
+++ b/test/fragments/helper.rb
@@ -37,12 +37,17 @@ module Fragments
     writer = Elf::ObjectWriter.new(@program , Elf::Constants::TARGET_ARM)
     assembly = writer.text
     # use this for getting the bytes to compare to :  
-    #puts assembly
+    puts assembly
     writer.save("#{name}.o")
     assembly.text.bytes.each_with_index do |byte , index|
       is = @should[index]
       assert_equal  Fixnum , is.class , "@#{index.to_s(16)} = #{is}"
       assert_equal  byte , is  , "@#{index.to_s(16)} #{byte.to_s(16)} != #{is.to_s(16)}"
     end
+    if( RbConfig::CONFIG["build_cpu"] == "arm")
+      system "ld -N #{name}.o"
+      result = %x[./a.out]
+      assert_equal @output , result
+    end
   end
 end
diff --git a/test/fragments/test_foo.rb b/test/fragments/test_foo.rb
index 58a71489..bb640890 100644
--- a/test/fragments/test_foo.rb
+++ b/test/fragments/test_foo.rb
@@ -11,6 +11,7 @@ class TestFoo < MiniTest::Test
     foo( 3 )
 HERE
     @should = [0x0,0xb0,0xa0,0xe3,0x3,0x10,0xa0,0xe3,0x2,0x0,0x0,0xeb,0x1,0x70,0xa0,0xe3,0x0,0x0,0x0,0xef,0x0,0x70,0xa0,0xe1,0x0,0x40,0x2d,0xe9,0x5,0x20,0xa0,0xe3,0x2,0x70,0xa0,0xe1,0x0,0x80,0xbd,0xe8]
+    @output = ""
     parse 
     write "foo"
   end
diff --git a/test/fragments/test_functions.rb b/test/fragments/test_functions.rb
index fcd1e023..88e165d6 100644
--- a/test/fragments/test_functions.rb
+++ b/test/fragments/test_functions.rb
@@ -23,8 +23,9 @@ class TestFunctions < MiniTest::Test
     
     putint(times(7,6))
 HERE
-    @should = [0x0,0xb0,0xa0,0xe3,0x7,0x10,0xa0,0xe3,0x6,0x20,0xa0,0xe3,0xc,0x0,0x0,0xeb,0x7,0x10,0xa0,0xe1,0x32,0x0,0x0,0xeb,0x1,0x70,0xa0,0xe3,0x0,0x0,0x0,0xef,0x0,0x70,0xa0,0xe1,0x0,0x40,0x2d,0xe9,0x2,0x30,0x41,0xe0,0x3,0x70,0xa0,0xe1,0x0,0x80,0xbd,0xe8,0x0,0x40,0x2d,0xe9,0x2,0x30,0x81,0xe0,0x3,0x70,0xa0,0xe1,0x0,0x80,0xbd,0xe8,0x0,0x40,0x2d,0xe9,0x0,0x0,0x52,0xe3,0x10,0x0,0x0,0xa,0x6,0x0,0x2d,0xe9,0x2,0x10,0xa0,0xe1,0x1,0x20,0xa0,0xe3,0xf0,0xff,0xff,0xeb,0x6,0x0,0xbd,0xe8,0x7,0x30,0xa0,0xe1,0xe,0x0,0x2d,0xe9,0x3,0x20,0xa0,0xe1,0xf3,0xff,0xff,0xeb,0xe,0x0,0xbd,0xe8,0x7,0x40,0xa0,0xe1,0x1e,0x0,0x2d,0xe9,0x4,0x20,0xa0,0xe1,0xea,0xff,0xff,0xeb,0x1e,0x0,0xbd,0xe8,0x7,0x10,0xa0,0xe1,0x0,0x0,0x0,0xea,0x0,0x10,0xa0,0xe3,0x1,0x70,0xa0,0xe1,0x0,0x80,0xbd,0xe8,0x0,0x40,0x2d,0xe9,0xa,0x30,0x42,0xe2,0x22,0x21,0x42,0xe0,0x22,0x22,0x82,0xe0,0x22,0x24,0x82,0xe0,0x22,0x28,0x82,0xe0,0xa2,0x21,0xa0,0xe1,0x2,0x41,0x82,0xe0,0x84,0x30,0x53,0xe0,0x1,0x20,0x82,0x52,0xa,0x30,0x83,0x42,0x30,0x30,0x83,0xe2,0x0,0x30,0xc1,0xe5,0x1,0x10,0x41,0xe2,0x0,0x0,0x52,0xe3,0xef,0xff,0xff,0x1b,0x0,0x80,0xbd,0xe8,0x0,0x40,0x2d,0xe9,0x1,0x20,0xa0,0xe1,0x20,0x10,0x8f,0xe2,0x9,0x10,0x81,0xe2,0xe9,0xff,0xff,0xeb,0x14,0x10,0x8f,0xe2,0xc,0x20,0xa0,0xe3,0x1,0x0,0xa0,0xe3,0x4,0x70,0xa0,0xe3,0x0,0x0,0x0,0xef,0x0,0x70,0xa0,0xe1,0x0,0x80,0xbd,0xe8,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x0]
-    parse 
+    @should = [0x0,0xb0,0xa0,0xe3,0x7,0x10,0xa0,0xe3,0x6,0x20,0xa0,0xe3,0xc,0x0,0x0,0xeb,0x7,0x10,0xa0,0xe1,0x32,0x0,0x0,0xeb,0x1,0x70,0xa0,0xe3,0x0,0x0,0x0,0xef,0x0,0x70,0xa0,0xe1,0x0,0x40,0x2d,0xe9,0x2,0x30,0x41,0xe0,0x3,0x70,0xa0,0xe1,0x0,0x80,0xbd,0xe8,0x0,0x40,0x2d,0xe9,0x2,0x30,0x81,0xe0,0x3,0x70,0xa0,0xe1,0x0,0x80,0xbd,0xe8,0x0,0x40,0x2d,0xe9,0x0,0x0,0x52,0xe3,0x10,0x0,0x0,0xa,0x6,0x0,0x2d,0xe9,0x2,0x10,0xa0,0xe1,0x1,0x20,0xa0,0xe3,0xf0,0xff,0xff,0xeb,0x6,0x0,0xbd,0xe8,0x7,0x30,0xa0,0xe1,0xe,0x0,0x2d,0xe9,0x3,0x20,0xa0,0xe1,0xf3,0xff,0xff,0xeb,0xe,0x0,0xbd,0xe8,0x7,0x40,0xa0,0xe1,0x1e,0x0,0x2d,0xe9,0x4,0x20,0xa0,0xe1,0xea,0xff,0xff,0xeb,0x1e,0x0,0xbd,0xe8,0x7,0x10,0xa0,0xe1,0x0,0x0,0x0,0xea,0x0,0x10,0xa0,0xe3,0x1,0x70,0xa0,0xe1,0x0,0x80,0xbd,0xe8,0x0,0x40,0x2d,0xe9,0xa,0x30,0x42,0xe2,0x22,0x21,0x42,0xe0,0x22,0x22,0x82,0xe0,0x22,0x24,0x82,0xe0,0x22,0x28,0x82,0xe0,0xa2,0x21,0xa0,0xe1,0x2,0x41,0x82,0xe0,0x84,0x30,0x53,0xe0,0x1,0x20,0x82,0x52,0xa,0x30,0x83,0x42,0x30,0x30,0x83,0xe2,0x0,0x30,0xc1,0xe5,0x1,0x10,0x41,0xe2,0x0,0x0,0x52,0xe3,0xef,0xff,0xff,0x1b,0x0,0x80,0xbd,0xe8,0x0,0x40,0x2d,0xe9,0x1,0x20,0xa0,0xe1,0x20,0x10,0x8f,0xe2,0x9,0x10,0x81,0xe2,0xe9,0xff,0xff,0xeb,0x14,0x10,0x8f,0xe2,0xc,0x20,0xa0,0xe3,0x1,0x0,0xa0,0xe3,0x4,0x70,0xa0,0xe3,0x0,0x0,0x0,0xef,0x0,0x70,0xa0,0xe1,0x0,0x80,0xbd,0xe8,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20]
+    @output = "        42  "
+    parse
     write "functions"
   end
 end
diff --git a/test/fragments/test_hello.rb b/test/fragments/test_hello.rb
index a311509f..7b4cf949 100644
--- a/test/fragments/test_hello.rb
+++ b/test/fragments/test_hello.rb
@@ -5,9 +5,10 @@ class TestHello < MiniTest::Test
 
   def test_hello
     @string_input = <<HERE
-    putstring( "Hello Raisa, I am crystksdfkljsncjncn" )
+    putstring( "Hello Raisa, I am crystal" )
 HERE
-    @should = [0x0,0xb0,0xa0,0xe3,0x28,0x10,0x8f,0xe2,0x28,0x20,0xa0,0xe3,0x2,0x0,0x0,0xeb,0x1,0x70,0xa0,0xe3,0x0,0x0,0x0,0xef,0x0,0x70,0xa0,0xe1,0x0,0x40,0x2d,0xe9,0x1,0x0,0xa0,0xe3,0x4,0x70,0xa0,0xe3,0x0,0x0,0x0,0xef,0x0,0x70,0xa0,0xe1,0x0,0x80,0xbd,0xe8,0x48,0x65,0x6c,0x6c,0x6f,0x20,0x52,0x61,0x69,0x73,0x61,0x2c,0x20,0x49,0x20,0x61,0x6d,0x20,0x63,0x72,0x79,0x73,0x74,0x6b,0x73,0x64,0x66,0x6b,0x6c,0x6a,0x73,0x6e,0x63,0x6a,0x6e,0x63,0x6e,0x0,0x0,0x0]
+    @should = [0x0,0xb0,0xa0,0xe3,0x28,0x10,0x8f,0xe2,0x1c,0x20,0xa0,0xe3,0x2,0x0,0x0,0xeb,0x1,0x70,0xa0,0xe3,0x0,0x0,0x0,0xef,0x0,0x70,0xa0,0xe1,0x0,0x40,0x2d,0xe9,0x1,0x0,0xa0,0xe3,0x4,0x70,0xa0,0xe3,0x0,0x0,0x0,0xef,0x0,0x70,0xa0,0xe1,0x0,0x80,0xbd,0xe8,0x48,0x65,0x6c,0x6c,0x6f,0x20,0x52,0x61,0x69,0x73,0x61,0x2c,0x20,0x49,0x20,0x61,0x6d,0x20,0x63,0x72,0x79,0x73,0x74,0x61,0x6c,0x20,0x20,0x20]
+    @output = "Hello Raisa, I am crystal   "
     parse 
     write "hello"
   end
diff --git a/test/fragments/test_if.rb b/test/fragments/test_if.rb
index 23cb5a10..0d2c4fda 100644
--- a/test/fragments/test_if.rb
+++ b/test/fragments/test_if.rb
@@ -14,7 +14,8 @@ class TestIf < MiniTest::Test
     end
     itest(20)
 HERE
-    @should = [0x0,0xb0,0xa0,0xe3,0x14,0x10,0xa0,0xe3,0x2,0x0,0x0,0xeb,0x1,0x70,0xa0,0xe3,0x0,0x0,0x0,0xef,0x0,0x70,0xa0,0xe1,0x0,0x40,0x2d,0xe9,0xc,0x0,0x51,0xe3,0x5,0x0,0x0,0xba,0x2,0x0,0x2d,0xe9,0x3c,0x10,0x8f,0xe2,0x8,0x20,0xa0,0xe3,0x7,0x0,0x0,0xeb,0x2,0x0,0xbd,0xe8,0x4,0x0,0x0,0xea,0x2,0x0,0x2d,0xe9,0x2c,0x10,0x8f,0xe2,0x8,0x20,0xa0,0xe3,0x1,0x0,0x0,0xeb,0x2,0x0,0xbd,0xe8,0x0,0x80,0xbd,0xe8,0x0,0x40,0x2d,0xe9,0x1,0x0,0xa0,0xe3,0x4,0x70,0xa0,0xe3,0x0,0x0,0x0,0xef,0x0,0x70,0xa0,0xe1,0x0,0x80,0xbd,0xe8,0x65,0x6c,0x73,0x65,0x0,0x0,0x0,0x0,0x74,0x68,0x65,0x6e,0x0,0x0,0x0,0x0]
+    @should = [0x0,0xb0,0xa0,0xe3,0x14,0x10,0xa0,0xe3,0x2,0x0,0x0,0xeb,0x1,0x70,0xa0,0xe3,0x0,0x0,0x0,0xef,0x0,0x70,0xa0,0xe1,0x0,0x40,0x2d,0xe9,0xc,0x0,0x51,0xe3,0x5,0x0,0x0,0xba,0x2,0x0,0x2d,0xe9,0x3c,0x10,0x8f,0xe2,0x8,0x20,0xa0,0xe3,0x7,0x0,0x0,0xeb,0x2,0x0,0xbd,0xe8,0x4,0x0,0x0,0xea,0x2,0x0,0x2d,0xe9,0x2c,0x10,0x8f,0xe2,0x8,0x20,0xa0,0xe3,0x1,0x0,0x0,0xeb,0x2,0x0,0xbd,0xe8,0x0,0x80,0xbd,0xe8,0x0,0x40,0x2d,0xe9,0x1,0x0,0xa0,0xe3,0x4,0x70,0xa0,0xe3,0x0,0x0,0x0,0xef,0x0,0x70,0xa0,0xe1,0x0,0x80,0xbd,0xe8,0x65,0x6c,0x73,0x65,0x20,0x20,0x20,0x20,0x74,0x68,0x65,0x6e,0x20,0x20,0x20,0x20]
+    @output = "else    "
     parse 
     write "if"
   end
diff --git a/test/fragments/test_putint.rb b/test/fragments/test_putint.rb
index 929a1ca5..980e3dbf 100644
--- a/test/fragments/test_putint.rb
+++ b/test/fragments/test_putint.rb
@@ -7,7 +7,8 @@ class TestPutint < MiniTest::Test
     @string_input = <<HERE
     putint( 42 )
 HERE
-    @should = [0x0,0xb0,0xa0,0xe3,0x2a,0x10,0xa0,0xe3,0x13,0x0,0x0,0xeb,0x1,0x70,0xa0,0xe3,0x0,0x0,0x0,0xef,0x0,0x70,0xa0,0xe1,0x0,0x40,0x2d,0xe9,0xa,0x30,0x42,0xe2,0x22,0x21,0x42,0xe0,0x22,0x22,0x82,0xe0,0x22,0x24,0x82,0xe0,0x22,0x28,0x82,0xe0,0xa2,0x21,0xa0,0xe1,0x2,0x41,0x82,0xe0,0x84,0x30,0x53,0xe0,0x1,0x20,0x82,0x52,0xa,0x30,0x83,0x42,0x30,0x30,0x83,0xe2,0x0,0x30,0xc1,0xe5,0x1,0x10,0x41,0xe2,0x0,0x0,0x52,0xe3,0xef,0xff,0xff,0x1b,0x0,0x80,0xbd,0xe8,0x0,0x40,0x2d,0xe9,0x1,0x20,0xa0,0xe1,0x20,0x10,0x8f,0xe2,0x9,0x10,0x81,0xe2,0xe9,0xff,0xff,0xeb,0x14,0x10,0x8f,0xe2,0xc,0x20,0xa0,0xe3,0x1,0x0,0xa0,0xe3,0x4,0x70,0xa0,0xe3,0x0,0x0,0x0,0xef,0x0,0x70,0xa0,0xe1,0x0,0x80,0xbd,0xe8,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x0]
+    @should = [0x0,0xb0,0xa0,0xe3,0x2a,0x10,0xa0,0xe3,0x13,0x0,0x0,0xeb,0x1,0x70,0xa0,0xe3,0x0,0x0,0x0,0xef,0x0,0x70,0xa0,0xe1,0x0,0x40,0x2d,0xe9,0xa,0x30,0x42,0xe2,0x22,0x21,0x42,0xe0,0x22,0x22,0x82,0xe0,0x22,0x24,0x82,0xe0,0x22,0x28,0x82,0xe0,0xa2,0x21,0xa0,0xe1,0x2,0x41,0x82,0xe0,0x84,0x30,0x53,0xe0,0x1,0x20,0x82,0x52,0xa,0x30,0x83,0x42,0x30,0x30,0x83,0xe2,0x0,0x30,0xc1,0xe5,0x1,0x10,0x41,0xe2,0x0,0x0,0x52,0xe3,0xef,0xff,0xff,0x1b,0x0,0x80,0xbd,0xe8,0x0,0x40,0x2d,0xe9,0x1,0x20,0xa0,0xe1,0x20,0x10,0x8f,0xe2,0x9,0x10,0x81,0xe2,0xe9,0xff,0xff,0xeb,0x14,0x10,0x8f,0xe2,0xc,0x20,0xa0,0xe3,0x1,0x0,0xa0,0xe3,0x4,0x70,0xa0,0xe3,0x0,0x0,0x0,0xef,0x0,0x70,0xa0,0xe1,0x0,0x80,0xbd,0xe8,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20]
+    @output = "        42  "
     parse 
     write "putint"
   end
diff --git a/test/fragments/test_recursive_fibo.rb b/test/fragments/test_recursive_fibo.rb
index 06c8d80b..006a1d49 100644
--- a/test/fragments/test_recursive_fibo.rb
+++ b/test/fragments/test_recursive_fibo.rb
@@ -5,10 +5,13 @@ class TestRecursinveFibo < MiniTest::Test
 
   def test_recursive_fibo
     @string_input = <<HERE
-    def fibonaccir( n  )
-        return n  if n <= 1 
+    def fibonaccir( n )
+      if n <= 1
+        return n 
+      else
         res = fibonaccir( n - 1 ) + fibonaccir( n - 2 )
         return res
+      end
     end 
 
     putint(fibonaccir( 10 ))
diff --git a/test/fragments/test_while.rb b/test/fragments/test_while.rb
index f3a0a1e8..774ea5bf 100644
--- a/test/fragments/test_while.rb
+++ b/test/fragments/test_while.rb
@@ -19,8 +19,9 @@ class TestWhileFragment < MiniTest::Test
 
     fibonaccit( 10 )
 HERE
-    @should = [0x0,0xb0,0xa0,0xe3,0xa,0x10,0xa0,0xe3,0x2,0x0,0x0,0xeb,0x1,0x70,0xa0,0xe3,0x0,0x0,0x0,0xef,0x0,0x70,0xa0,0xe1,0x0,0x40,0x2d,0xe9,0x0,0x20,0xa0,0xe3,0x1,0x30,0xa0,0xe3,0x1,0x0,0x51,0xe3,0x6,0x0,0x0,0xda,0x2,0x40,0xa0,0xe1,0x3,0x20,0xa0,0xe1,0x3,0x50,0x84,0xe0,0x5,0x30,0xa0,0xe1,0x1,0x60,0x41,0xe2,0x6,0x10,0xa0,0xe1,0xf6,0xff,0xff,0xea,0x7e,0x0,0x2d,0xe9,0x3,0x10,0xa0,0xe1,0x12,0x0,0x0,0xeb,0x7e,0x0,0xbd,0xe8,0x0,0x80,0xbd,0xe8,0x0,0x40,0x2d,0xe9,0xa,0x30,0x42,0xe2,0x22,0x21,0x42,0xe0,0x22,0x22,0x82,0xe0,0x22,0x24,0x82,0xe0,0x22,0x28,0x82,0xe0,0xa2,0x21,0xa0,0xe1,0x2,0x41,0x82,0xe0,0x84,0x30,0x53,0xe0,0x1,0x20,0x82,0x52,0xa,0x30,0x83,0x42,0x30,0x30,0x83,0xe2,0x0,0x30,0xc1,0xe5,0x1,0x10,0x41,0xe2,0x0,0x0,0x52,0xe3,0xef,0xff,0xff,0x1b,0x0,0x80,0xbd,0xe8,0x0,0x40,0x2d,0xe9,0x1,0x20,0xa0,0xe1,0x20,0x10,0x8f,0xe2,0x9,0x10,0x81,0xe2,0xe9,0xff,0xff,0xeb,0x14,0x10,0x8f,0xe2,0xc,0x20,0xa0,0xe3,0x1,0x0,0xa0,0xe3,0x4,0x70,0xa0,0xe3,0x0,0x0,0x0,0xef,0x0,0x70,0xa0,0xe1,0x0,0x80,0xbd,0xe8,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x0]
-    parse 
+    @should = [0x0,0xb0,0xa0,0xe3,0xa,0x10,0xa0,0xe3,0x2,0x0,0x0,0xeb,0x1,0x70,0xa0,0xe3,0x0,0x0,0x0,0xef,0x0,0x70,0xa0,0xe1,0x0,0x40,0x2d,0xe9,0x0,0x20,0xa0,0xe3,0x1,0x30,0xa0,0xe3,0x1,0x0,0x51,0xe3,0x6,0x0,0x0,0xda,0x2,0x40,0xa0,0xe1,0x3,0x20,0xa0,0xe1,0x3,0x50,0x84,0xe0,0x5,0x30,0xa0,0xe1,0x1,0x60,0x41,0xe2,0x6,0x10,0xa0,0xe1,0xf6,0xff,0xff,0xea,0x7e,0x0,0x2d,0xe9,0x3,0x10,0xa0,0xe1,0x12,0x0,0x0,0xeb,0x7e,0x0,0xbd,0xe8,0x0,0x80,0xbd,0xe8,0x0,0x40,0x2d,0xe9,0xa,0x30,0x42,0xe2,0x22,0x21,0x42,0xe0,0x22,0x22,0x82,0xe0,0x22,0x24,0x82,0xe0,0x22,0x28,0x82,0xe0,0xa2,0x21,0xa0,0xe1,0x2,0x41,0x82,0xe0,0x84,0x30,0x53,0xe0,0x1,0x20,0x82,0x52,0xa,0x30,0x83,0x42,0x30,0x30,0x83,0xe2,0x0,0x30,0xc1,0xe5,0x1,0x10,0x41,0xe2,0x0,0x0,0x52,0xe3,0xef,0xff,0xff,0x1b,0x0,0x80,0xbd,0xe8,0x0,0x40,0x2d,0xe9,0x1,0x20,0xa0,0xe1,0x20,0x10,0x8f,0xe2,0x9,0x10,0x81,0xe2,0xe9,0xff,0xff,0xeb,0x14,0x10,0x8f,0xe2,0xc,0x20,0xa0,0xe3,0x1,0x0,0xa0,0xe3,0x4,0x70,0xa0,0xe3,0x0,0x0,0x0,0xef,0x0,0x70,0xa0,0xe1,0x0,0x80,0xbd,0xe8,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20]
+    @output = "        55  "
+    parse
     write "while"
   end
 end