make test: detect hung tests

Run tests in a forked process with a set of pipes to communicate
keep-alives and overall result. This allows us to detect when e.g.
vpp dies mid-API call causing the test to hang waiting for response
(which will never come since vpp died).

Support setting a (per test case) TIMEOUT make test option to set timeout,
with a default timeout of 120 seconds.

Example - fail the test suite if any test-case fails to finish within
300s:

make TIMEOUT=300 test

Change-Id: I0d04f26a7232968f4bf043adf5d5b508f5018717
Signed-off-by: Klement Sekera <ksekera@cisco.com>

1 files changed, 8 insertions, 2 deletions

diff --git a/test/sanity_run_vpp.py b/test/sanity_run_vpp.py
index 527b618fbd9..156608c104a 100644
--- a/test/sanity_run_vpp.py
+++ b/test/sanity_run_vpp.py
@@ -1,9 +1,10 @@
 #!/usr/bin/env python
 
 from __future__ import print_function
-from framework import VppTestCase
-from hook import VppDiedError
+from multiprocessing import Pipe
 from sys import exit
+from hook import VppDiedError
+from framework import VppTestCase, KeepAliveReporter
 
 
 class SanityTestCase(VppTestCase):
@@ -13,6 +14,9 @@ class SanityTestCase(VppTestCase):
 if __name__ == '__main__':
     rc = 0
     tc = SanityTestCase
+    x, y = Pipe()
+    reporter = KeepAliveReporter()
+    reporter.pipe = y
     try:
         tc.setUpClass()
     except VppDiedError:
@@ -22,5 +26,7 @@ if __name__ == '__main__':
             tc.tearDownClass()
         except:
             pass
+    x.close()
+    y.close()
 
     exit(rc)