tests: refactor ForeignAddressFactory

Move ForeignAddressFactory back to test_lisp.
It is the only test that uses the code and has
embedded addresses specific to the test.

Type: test

Change-Id: If1a39f9b167e36dd7aff7481350ddb8fe17155d2
Signed-off-by: Paul Vinciguerra <pvinci@vinciconsulting.com>

1 files changed, 14 insertions, 1 deletions

diff --git a/src/plugins/lisp/test/test_lisp.py b/src/plugins/lisp/test/test_lisp.py
index 0bb42112140..0a6e7525159 100644
--- a/src/plugins/lisp/test/test_lisp.py
+++ b/src/plugins/lisp/test/test_lisp.py
@@ -11,7 +11,7 @@ from scapy.layers.inet6 import IPv6
 from framework import VppTestCase, VppTestRunner
 from lisp import VppLocalMapping, VppLispAdjacency, VppLispLocator, \
     VppLispLocatorSet, VppRemoteMapping, LispRemoteLocator
-from util import ppp, ForeignAddressFactory
+from util import ppp
 
 # From py_lispnetworking.lisp.py:  # GNU General Public License v2.0
 
@@ -31,6 +31,19 @@ bind_layers(LISP_GPE_Header, IPv6, next_proto=2)
 bind_layers(LISP_GPE_Header, Ether, next_proto=3)
 
 
+class ForeignAddressFactory(object):
+    count = 0
+    prefix_len = 24
+    net_template = '10.10.10.{}'
+    net = net_template.format(0) + '/' + str(prefix_len)
+
+    def get_ip4(self):
+        if self.count > 255:
+            raise Exception("Network host address exhaustion")
+        self.count += 1
+        return self.net_template.format(self.count)
+
+
 class Driver(metaclass=abc.ABCMeta):
 
     config_order = ['locator-sets',