tests/unit/benchmark/scenarios/compute/test_cachestat.py

   1 #!/usr/bin/env python
   2
   3 ##############################################################################
   4 # Copyright (c) 2016 Huawei Technologies Co.,Ltd and others.
   5 #
   6 # All rights reserved. This program and the accompanying materials
   7 # are made available under the terms of the Apache License, Version 2.0
   8 # which accompanies this distribution, and is available at
   9 # http://www.apache.org/licenses/LICENSE-2.0
  10 ##############################################################################
  11
  12 # Unittest for yardstick.benchmark.scenarios.compute.cachestat.CACHEstat
  13
  14 from __future__ import absolute_import
  15 import mock
  16 import unittest
  17 import os
  18
  19 from yardstick.benchmark.scenarios.compute import cachestat
  20
  21
  22 @mock.patch('yardstick.benchmark.scenarios.compute.cachestat.ssh')
  23 class CACHEstatTestCase(unittest.TestCase):
  24
  25     def setUp(self):
  26         self.ctx = {
  27             'host': {
  28                 'ip': '172.16.0.137',
  29                 'user': 'root',
  30                 'key_filename': "mykey.key"
  31             }
  32         }
  33
  34         self.result = {}
  35
  36     def test_cachestat_successful_setup(self, mock_ssh):
  37         c = cachestat.CACHEstat({}, self.ctx)
  38         mock_ssh.SSH().execute.return_value = (0, '', '')
  39
  40         c.setup()
  41         self.assertIsNotNone(c.client)
  42         self.assertTrue(c.setup_done)
  43
  44     def test_execute_command_success(self, mock_ssh):
  45         c = cachestat.CACHEstat({}, self.ctx)
  46         mock_ssh.SSH().execute.return_value = (0, '', '')
  47         c.setup()
  48
  49         expected_result = 'abcdefg'
  50         mock_ssh.SSH().execute.return_value = (0, expected_result, '')
  51         result = c._execute_command("foo")
  52         self.assertEqual(result, expected_result)
  53
  54     def test_execute_command_failed(self, mock_ssh):
  55         c = cachestat.CACHEstat({}, self.ctx)
  56         mock_ssh.SSH().execute.return_value = (0, '', '')
  57         c.setup()
  58
  59         mock_ssh.SSH().execute.return_value = (127, '', 'Failed executing \
  60             command')
  61         self.assertRaises(RuntimeError, c._execute_command,
  62                           "cat /proc/meminfo")
  63
  64     def test_get_cache_usage_successful(self, mock_ssh):
  65         options = {
  66             "interval": 1,
  67         }
  68         args = {"options": options}
  69         c = cachestat.CACHEstat(args, self.ctx)
  70         mock_ssh.SSH().execute.return_value = (0, '', '')
  71         c.setup()
  72
  73         output = self._read_file("cachestat_sample_output.txt")
  74         mock_ssh.SSH().execute.return_value = (0, output, '')
  75         result = c._get_cache_usage()
  76         expected_result = {"cachestat": {"cache0": {"HITS": "6462",
  77                                                     "DIRTIES": "29",
  78                                                     "RATIO": "100.0%",
  79                                                     "MISSES": "0",
  80                                                     "BUFFERS_MB": "1157",
  81                                                     "CACHE_MB": "66782"}},
  82                            "average": {"HITS": 6462, "DIRTIES": 29,
  83                                        "RATIO": "100.0%",
  84                                        "MISSES": 0, "BUFFERS_MB": 1157,
  85                                        "CACHE_MB": 66782},
  86                            "max": {"HITS": 6462,
  87                                    "DIRTIES": 29, "RATIO": 100.0, "MISSES": 0,
  88                                    "BUFFERS_MB": 1157, "CACHE_MB": 66782}}
  89
  90         self.assertEqual(result, expected_result)
  91
  92     def _read_file(self, filename):
  93         curr_path = os.path.dirname(os.path.abspath(__file__))
  94         output = os.path.join(curr_path, filename)
  95         with open(output) as f:
  96             sample_output = f.read()
  97         return sample_output