int type: Added tests for the __invert__
@@ -12,3 +12,7 @@ assert type(x) is A
assert int(2).__bool__() == True
assert int(0.5).__bool__() == False
assert int(-1).__bool__() == True
+
+assert int(0).__invert__() == -1
+assert int(-3).__invert__() == 2
+assert int(4).__invert__() == -5
