teststeps: Improvements of step driven TC

This patch adds support of access to VMs deployed automatically
by deployment scenario (e.g. pvp, pvvp4, etc.). It also modifies
filter for checking output of executed commands to correctly
handle different end of line encodings (i.e. \n vs. \n\r).

JIRA: VSPERF-539

Change-Id: Ifc796d992b90e316bad5853aaefce79e439e294d
Signed-off-by: Martin Klozik <martinx.klozik@intel.com>
Reviewed-by: Al Morton <acmorton@att.com>
Reviewed-by: Christian Trautman <ctrautma@redhat.com>
Reviewed-by: Sridhar Rao <sridhar.rao@spirent.com>
Reviewed-by: Trevor Cooper <trevor.cooper@intel.com>

1 files changed, 14 insertions, 0 deletions

diff --git a/testcases/testcase.py b/testcases/testcase.py
index 37cdefa6..b3300b89 100644
--- a/testcases/testcase.py
+++ b/testcases/testcase.py
@@ -78,6 +78,7 @@ class TestCase(object):
         self._step_result_mapping = {}
         self._step_status = None
         self._step_send_traffic = False # indication if send_traffic was called within test steps
+        self._vnf_list = []
         self._testcase_run_time = None
 
         S.setValue('VSWITCH', cfg.get('vSwitch', S.getValue('VSWITCH')))
@@ -201,6 +202,8 @@ class TestCase(object):
             loader.get_vnf_class(),
             len(self._step_vnf_list))
 
+        self._vnf_list = self._vnf_ctl.get_vnfs()
+
         # verify enough hugepages are free to run the testcase
         if not self._check_for_enough_hugepages():
             raise RuntimeError('Not enough hugepages free to run test.')
@@ -792,10 +795,21 @@ class TestCase(object):
                     # so it is not sent again after the execution of teststeps
                     self._step_send_traffic = True
             elif step[0].startswith('vnf'):
+                # use vnf started within TestSteps
                 if not self._step_vnf_list[step[0]]:
                     # initialize new VM
                     self._step_vnf_list[step[0]] = loader.get_vnf_class()()
                 test_object = self._step_vnf_list[step[0]]
+            elif step[0].startswith('VNF'):
+                if step[1] in ('start', 'stop'):
+                    raise RuntimeError("Cannot execute start() or stop() method of "
+                                       "VNF deployed automatically by scenario.")
+                # use vnf started by scenario deployment (e.g. pvp)
+                vnf_index = int(step[0][3:])
+                try:
+                    test_object = self._vnf_list[vnf_index]
+                except IndexError:
+                    raise RuntimeError("VNF with index {} is not running.".format(vnf_index))
             elif step[0] == 'wait':
                 input(os.linesep + "Step {}: Press Enter to continue with "
                       "the next step...".format(i) + os.linesep + os.linesep)