;

test/utils.py

@@ -1125,10 +1125,13 @@ class Vtctld(object):
 def uint64_to_hex(integer):
   """Returns the hexadecimal representation of integer treated as a 64-bit unsigned integer.
 
-  The result is padded by zeros if necessary to fill an 8 character string. Useful for converting
+  The result is padded by zeros if necessary to fill an 16 character string. Useful for converting
   keyspace ids integers.
   Example:
-  uint64_to_hex(1) == "00000001"
-  uint64_to_hex(0xDEADBEAF) == "DEADBEEF"
+  uint64_to_hex(1) == "0000000000000001"
+  uint64_to_hex(0xDEADBEAF) == "00000000DEADBEEF"
+  uint64_to_hex(0xDEADBEAFDEADBEAFDEADBEAF) raises an out of range exception.
   """
+  if integer > (1<<64)-1 || integer < 0:
+    raise Exception('Integer out of range: %d' %d integer)
   return "%08X" % integer