bier: tests support python3

Type: fix
Signed-off-by: Ole Troan <ot@cisco.com>
Change-Id: I3cf5295f1a85579a66ba38ca1f74678b45474959

2 files changed, 10 insertions, 9 deletions

diff --git a/src/vpp-api/python/vpp_papi/vpp_serializer.py b/src/vpp-api/python/vpp_papi/vpp_serializer.py
index 5b45cd8a569..8ae46fee83c 100644
--- a/src/vpp-api/python/vpp_papi/vpp_serializer.py
+++ b/src/vpp-api/python/vpp_papi/vpp_serializer.py
@@ -250,21 +250,22 @@ class VLAList(object):
         self.options = args
         return self
 
-    def pack(self, list, kwargs=None):
-        if not list:
+    def pack(self, lst, kwargs=None):
+        if not lst:
             return b""
-        if len(list) != kwargs[self.length_field]:
+        if len(lst) != kwargs[self.length_field]:
             raise VPPSerializerValueError(
                 'Variable length error, got: {} expected: {}'
-                .format(len(list), kwargs[self.length_field]))
-        b = bytes()
+                .format(len(lst), kwargs[self.length_field]))
 
         # u8 array
-
         if self.packer.size == 1:
-            return bytearray(list)
+            if isinstance(lst, list):
+                return b''.join(lst)
+            return bytes(lst)
 
-        for e in list:
+        b = bytes()
+        for e in lst:
             b += self.packer.pack(e)
         return b
 
diff --git a/test/test_bier.py b/test/test_bier.py
index 793c8ca0362..b188c364a7a 100644
--- a/test/test_bier.py
+++ b/test/test_bier.py
@@ -167,7 +167,7 @@ class TestBier(VppTestCase):
                 byte_val = scapy.compat.chb(1 << (bp - 1) % 8)
                 byte_pos = n_bytes - (((bp - 1) // 8) + 1)
                 byte_array[byte_pos] = byte_val
-                bitstring = ''.join([scapy.compat.chb(x) for x in byte_array])
+                bitstring = b''.join([scapy.compat.chb(x) for x in byte_array])
 
                 self.assertEqual(len(bitstring), len(bier_hdr.BitString))
                 self.assertEqual(bitstring, bier_hdr.BitString)