API refactoring : netmap

[vpp.git] / test / util.py

diff --git a/test/util.py b/test/util.py
index 643377f..0ac2376 100644 (file)
--- a/test/util.py
+++ b/test/util.py
@@ -1,5 +1,6 @@
 import socket
 import sys
+from abc import abstractmethod, ABCMeta
 from cStringIO import StringIO
 
 
@@ -14,6 +15,49 @@ def ppp(headline, packet):
     return o.getvalue()
 
 
+def ppc(headline, capture, limit=10):
+    """ Return string containing ppp() printout for a capture.
+
+    :param headline: printed as first line of output
+    :param capture: packets to print
+    :param limit: limit the print to # of packets
+    """
+    if not capture:
+        return headline
+    result = headline + "\n"
+    count = 1
+    for p in capture:
+        result.append(ppp("Packet #%s:" % count, p))
+        count += 1
+        if count >= limit:
+            break
+    if limit < len(capture):
+        result.append(
+            "Capture contains %s packets in total, of which %s were printed" %
+            (len(capture), limit))
+
+
+class NumericConstant(object):
+    __metaclass__ = ABCMeta
+
+    desc_dict = {}
+
+    @abstractmethod
+    def __init__(self, value):
+        self._value = value
+
+    def __int__(self):
+        return self._value
+
+    def __long__(self):
+        return self._value
+
+    def __str__(self):
+        if self._value in self.desc_dict:
+            return self.desc_dict[self._value]
+        return ""
+
+
 class Host(object):
     """ Generic test host "connected" to VPPs interface. """