Fix test

Expected should come first

Author: boriel

tests/arch/zx48k/optimizer/test_optimizer_asm.py

@@ -16,7 +16,7 @@ def test_raises_error_on_empty_instruction(self):
 
     def test_unknown_instruction(self):
         a = asm.Asm(' unknown instr ')
-        self.assertEqual(a.bytes, ())
+        self.assertEqual((), a.bytes)
 
     def test_simplify_arg(self):
         a = helpers.simplify_asm_args('ld a, (126 - 1)')