[test/features] Add test for show features command

tests/test_features.py

@@ -0,0 +1,37 @@
+import pytest
+import logging
+
+logger = logging.getLogger(__name__)
+
+def get_dict_stdout(cmd_out):
+    """Extract dictionary from show features command output
+    """
+    result = ""
+    out_dict = {}
+    cmd = cmd_out[2:]
+    for x in cmd:
+        result = x.encode('UTF-8')
+        r = result.split()
+        out_dict[r[0]] = r[1]
+    return out_dict
+
+def get_status_redisout(status_out):
+    """Extract status value for feature in redis
+    """
+    status_list = status_out[1:]
+    status = ""
+    for s in status_list:
+        status = s.encode('UTF-8')
+        return status
+
+def test_show_features(duthost):
+    """Verify show features command output against CONFIG_DB
+    """
+    features_stdout = duthost.shell('show features', module_ignore_errors=True)['stdout_lines']
+    features_dict = get_dict_stdout(features_stdout)
+    for k,v in features_dict.items():
+        feature = str(k)
+        status_out = duthost.shell('/usr/bin/redis-cli -n 4 hgetall "FEATURE|{}"'.format(feature), module_ignore_errors=False)['stdout_lines']
+        redis_value = get_status_redisout(status_out)
+        if str(redis_value) == str(v):
+            assert True, "{} is {} which matches with config_db".format(k,v)