[test_iface_namingmode] Adjusted the test according to the new buffer…

… queue/pg counters optimization (#6431)

Signed-off-by: Vadym Hlushko <vadymh@nvidia.com>

What is the motivation for this PR?
Because of the new implementation sonic-swss/pull/2432 from now on, there is a valid case if there are no multicast counters inside the COUNTERS_DB.

In order for multicast counters to be presented in COUNTERS_DB the appropriate queues should be configured inside the CONFIG_DB (e.g "BUFFER_QUEUE|Ethernet14|7-8")

How did you do it?
Change the testcases - test_show_queue_counters, test_show_queue_persistent_watermark_multicast, test_show_queue_watermark_multicast

tests/common/helpers/sonic_db.py

@@ -539,3 +539,18 @@ class SonicDbNoCommandOutput(Exception):
     Raised when no output is generated by the sonic-db-cli command.
     """
     pass
+
+
+def redis_get_keys(duthost, db_id, pattern):
+    """
+    Get all keys for a given pattern in given redis database
+    :param duthost: DUT host object
+    :param db_id: ID of redis database
+    :param pattern: Redis key pattern
+    :return: A list of key name in string
+    """
+    cmd = 'sonic-db-cli {} KEYS \"{}\"'.format(db_id, pattern)
+    logger.debug('Getting keys from redis by command: {}'.format(cmd))
+    output = duthost.shell(cmd)
+    content = output['stdout'].strip()
+    return content.split('\n') if content else None

tests/iface_namingmode/test_iface_namingmode.py

@@ -6,6 +6,7 @@
 from tests.common.utilities import wait, wait_until
 from netaddr import IPAddress
 from tests.common.helpers.assertions import pytest_assert
+from tests.common.helpers.sonic_db import redis_get_keys
 
 pytestmark = [
     pytest.mark.topology('any')
@@ -430,7 +431,7 @@ def setup_check_topo(self, duthosts, enum_rand_one_per_hwsku_frontend_hostname):
         skip_test_for_multi_asic(
             duthosts, enum_rand_one_per_hwsku_frontend_hostname)
 
-    def test_show_queue_counters(self, setup, setup_config_mode):
+    def test_show_queue_counters(self, setup, setup_config_mode, duthosts, enum_rand_one_per_hwsku_frontend_hostname):
         """
         Checks whether 'show queue counters' lists the interface names as
         per the configured naming mode
@@ -439,11 +440,22 @@ def test_show_queue_counters(self, setup, setup_config_mode):
         queue_counter = dutHostGuest.shell('SONIC_CLI_IFACE_MODE={} sudo show queue counters | grep "UC\|MC\|ALL"'.format(ifmode))['stdout']
         logger.info('queue_counter:\n{}'.format(queue_counter))
 
+        duthost = duthosts[enum_rand_one_per_hwsku_frontend_hostname]
+        buffer_queue_keys = redis_get_keys(duthost, 'CONFIG_DB', 'BUFFER_QUEUE|*')
+        interfaces = set()
+
+        for key in buffer_queue_keys:
+            try:
+                interfaces.add(key.split('|')[1])
+            except IndexError:
+                pass
+
         if mode == 'alias':
-            for alias in setup['port_alias']:
+            for intf in interfaces:
+                alias = setup['port_name_map'][intf]
                 assert (re.search(r'{}\s+[U|M]C|ALL\d\s+\S+\s+\S+\s+\S+\s+\S+'.format(alias), queue_counter) is not None) and (setup['port_alias_map'][alias] not in queue_counter)
         elif mode == 'default':
-            for intf in setup['default_interfaces']:
+            for intf in interfaces:
                 assert (re.search(r'{}\s+[U|M]C|ALL\d\s+\S+\s+\S+\s+\S+\s+\S+'.format(intf), queue_counter) is not None) and (setup['port_name_map'][intf] not in queue_counter)
 
     def test_show_queue_counters_interface(self, setup_config_mode, sample_intf):
@@ -468,12 +480,13 @@ def test_show_queue_persistent_watermark_multicast(self, setup, setup_config_mod
         show_queue_wm_mcast = dutHostGuest.shell('SONIC_CLI_IFACE_MODE={} show queue persistent-watermark multicast'.format(ifmode))['stdout']
         logger.info('show_queue_wm_mcast:\n{}'.format(show_queue_wm_mcast))
 
-        if mode == 'alias':
-            for alias in setup['port_alias']:
-                assert re.search(r'{}'.format(alias), show_queue_wm_mcast) is not None
-        elif mode == 'default':
-            for intf in setup['default_interfaces']:
-                assert re.search(r'{}'.format(intf), show_queue_wm_mcast) is not None
+        if show_queue_wm_mcast != "Object map from the COUNTERS_DB is empty because the multicast queues are not configured in the CONFIG_DB!":
+            if mode == 'alias':
+                for alias in setup['port_alias']:
+                    assert re.search(r'{}'.format(alias), show_queue_wm_mcast) is not None
+            elif mode == 'default':
+                for intf in setup['default_interfaces']:
+                    assert re.search(r'{}'.format(intf), show_queue_wm_mcast) is not None
 
     def test_show_queue_persistent_watermark_unicast(self, setup, setup_config_mode):
         """
@@ -500,12 +513,13 @@ def test_show_queue_watermark_multicast(self, setup, setup_config_mode):
         show_queue_wm_mcast = dutHostGuest.shell('SONIC_CLI_IFACE_MODE={} show queue watermark multicast'.format(ifmode))['stdout']
         logger.info('show_queue_wm_mcast:\n{}'.format(show_queue_wm_mcast))
 
-        if mode == 'alias':
-            for alias in setup['port_alias']:
-                assert re.search(r'{}'.format(alias), show_queue_wm_mcast) is not None
-        elif mode == 'default':
-            for intf in setup['default_interfaces']:
-                assert re.search(r'{}'.format(intf), show_queue_wm_mcast) is not None
+        if show_queue_wm_mcast != "Object map from the COUNTERS_DB is empty because the multicast queues are not configured in the CONFIG_DB!":
+            if mode == 'alias':
+                for alias in setup['port_alias']:
+                    assert re.search(r'{}'.format(alias), show_queue_wm_mcast) is not None
+            elif mode == 'default':
+                for intf in setup['default_interfaces']:
+                    assert re.search(r'{}'.format(intf), show_queue_wm_mcast) is not None
 
     def test_show_queue_watermark_unicast(self, setup, setup_config_mode):
         """