tests: "force solo" testcase support

Some of the tests are time-sensitive, and at present require a non-trivial
modification in order to run at high concurrency.

Without these modifications, they intermittently fail, and require
the test retries.

Rather than setting them to the extended tests and forgetting
about them, put them into a "solo" set, which gets run in a
single-threaded mode after the rest of the tests are done.

Mark a few of the tests that showed errors during TEST_JOBS=48
as forced-solo.

Also, give a better diagnostic if the testcase misses a docstring
needed to represent it in the diagnostic outputs.

Type: fix

Change-Id: I33fe62eb17edc1885bd2c3523892051d52da6546
Signed-off-by: Andrew Yourtchenko <ayourtch@gmail.com>

1 files changed, 8 insertions, 1 deletions

diff --git a/test/test_util.py b/test/test_util.py
index 51cc739ca8d..8501881a065 100755
--- a/test/test_util.py
+++ b/test/test_util.py
@@ -7,8 +7,15 @@ from vpp_papi import mac_pton, mac_ntop
 
 
 class TestUtil (unittest.TestCase):
-    """ MAC to binary and back """
+    """ Test framework utility tests """
+
+    @classmethod
+    def force_solo(cls):
+        """ if the test case class is timing-sensitive - return true """
+        return False
+
     def test_mac_to_binary(self):
+        """ MAC to binary and back """
         mac = 'aa:bb:cc:dd:ee:ff'
         b = mac_pton(mac)
         mac2 = mac_ntop(b)