adding this file lets 'python3 -munittest' in the top directory work

Author: jepler

tests/__init__.py

@@ -136,3 +136,9 @@ def testMovReverse(self):
         # test moving and reversing bits
         self.assertAssemblesTo("mov x, :: x", [0b101_00000_001_10_001])
         self.assertAssemblesTo("mov x, ::x", [0b101_00000_001_10_001])
+
+class TestWrap(AssembleChecks):
+    def testWrap(self):
+        self.assertAssemblyFails(".wrap")
+        self.assertPioKwargs("nop\n.wrap_target\nnop\nnop\n.wrap", 
+            sideset_count=0, sideset_enable=False, wrap=2, wrap_target=1)