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test_syscache.py
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185 lines (153 loc) · 6.2 KB
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# -*- coding: utf-8 -*-
# vim:set shiftwidth=4 softtabstop=4 expandtab textwidth=79:
import unittest
import gdb
import sys
from importlib import reload
from crash.exceptions import DelayedAttributeError
fake_config = (
"""
#
# Linux kernel 4.4
#
CONFIG_HZ=250
# CONFIG_HZ_1000 is not set
#
""")
class TestSysCache(unittest.TestCase):
def setUp(self):
gdb.execute("file tests/test-syscache")
self.cycle_namespace()
def tearDown(self):
gdb.execute("file")
def cycle_namespace(self):
import crash.cache.syscache
reload(crash.cache.syscache)
self.CrashUtsnameCache = crash.cache.syscache.CrashUtsnameCache
self.CrashConfigCache = crash.cache.syscache.CrashConfigCache
self.CrashKernelCache = crash.cache.syscache.CrashKernelCache
self.utsname = crash.cache.syscache.utsname
self.kernel = crash.cache.syscache.kernel
self.config = crash.cache.syscache.config
def clear_namespace(self):
gdb.execute("file")
self.cycle_namespace()
def get_fake_config(self):
from crash.cache.syscache import CrashConfigCache
class FakeConfigCache(CrashConfigCache):
def _decompress_config_buffer(self):
return fake_config
return FakeConfigCache()
def test_utsname_no_sym(self):
gdb.execute("file")
gdb.execute("maint flush-symbol-cache")
self.cycle_namespace()
utsname = self.CrashUtsnameCache()
with self.assertRaises(DelayedAttributeError):
release = utsname.release
def test_utsname(self):
utsname = self.CrashUtsnameCache()
self.assertTrue(utsname.sysname == 'Linux')
self.assertTrue(utsname.nodename == 'linux')
self.assertTrue(utsname.release == '4.4.21-default')
self.assertTrue(utsname.version == '#7 SMP Wed Nov 2 16:08:46 EDT 2016')
self.assertTrue(utsname.machine == 'x86_64')
self.assertTrue(utsname.domainname == 'suse.de')
def test_utsname_namespace_nofile(self):
self.clear_namespace()
utsname = self.utsname
with self.assertRaises(DelayedAttributeError):
x = utsname.sysname
def test_utsname_namespace(self):
self.cycle_namespace()
utsname = self.utsname
self.assertTrue(utsname.sysname == 'Linux')
self.assertTrue(utsname.nodename == 'linux')
self.assertTrue(utsname.release == '4.4.21-default')
self.assertTrue(utsname.version == '#7 SMP Wed Nov 2 16:08:46 EDT 2016')
self.assertTrue(utsname.machine == 'x86_64')
self.assertTrue(utsname.domainname == 'suse.de')
# Kind of a silly test, but otherwise we need to have a real config
def test_config(self):
config = self.get_fake_config()
self.assertTrue(str(config) == fake_config)
def test_config_dict(self):
config = self.get_fake_config()
self.assertTrue(config['HZ'] == '250')
def test_config_namespace(self):
self.cycle_namespace()
config = self.config
from crash.cache.syscache import config
x = str(config)
def test_config_namespace_nofile(self):
self.clear_namespace()
from crash.cache.syscache import config
with self.assertRaises(DelayedAttributeError):
x = str(config)
def test_config_dict_namespace(self):
from crash.cache.syscache import config
self.assertTrue(config['HZ'] == '250')
def test_get_uptime_value(self):
from crash.cache.syscache import CrashConfigCache, CrashKernelCache
config = CrashConfigCache()
kernel = CrashKernelCache(config)
kernel.set_jiffies(27028508)
kernel._adjust_jiffies = False
x = kernel.uptime
uptime = str(x)
self.assertTrue(uptime == '1 day, 6:01:54')
def test_get_uptime_with_symbol(self):
from crash.cache.syscache import CrashKernelCache
kernel = CrashKernelCache(self.get_fake_config())
x = kernel.uptime
self.assertTrue(str(x) == '0:02:34')
def test_kernel_namespace(self):
self.cycle_namespace()
from crash.cache.syscache import kernel
x = kernel.uptime
def test_kernel_namespace_nofile(self):
self.clear_namespace()
from crash.cache.syscache import kernel
with self.assertRaises(DelayedAttributeError):
x = kernel.uptime
def test_calculate_loadavg(self):
config = self.CrashConfigCache()
kernel = self.CrashKernelCache(config)
self.assertTrue(kernel._calculate_loadavg(344) == 0.17)
self.assertTrue(kernel._calculate_loadavg(105) == 0.05)
self.assertTrue(kernel._calculate_loadavg(28) == 0.01)
self.assertTrue(kernel._calculate_loadavg(458524) == 223.89)
self.assertTrue(kernel._calculate_loadavg(455057) == 222.20)
self.assertTrue(kernel._calculate_loadavg(446962) == 218.24)
def test_loadavg_values(self):
config = self.CrashConfigCache()
kernel = self.CrashKernelCache(config)
metrics = kernel._get_loadavg_values()
self.assertTrue(metrics[0] == 0.17)
self.assertTrue(metrics[1] == 0.05)
self.assertTrue(metrics[2] == 0.01)
def test_loadavg(self):
config = self.CrashConfigCache()
kernel = self.CrashKernelCache(config)
x = kernel.loadavg
self.assertTrue(x == "0.17 0.05 0.01")
def test_loadavg_values_missing_symbol(self):
self.clear_namespace()
config = self.CrashConfigCache()
kernel = self.CrashKernelCache(config)
with self.assertRaises(DelayedAttributeError):
metrics = kernel._get_loadavg_values()
def test_loadavg_missing_symbol(self):
self.clear_namespace()
config = self.CrashConfigCache()
kernel = self.CrashKernelCache(config)
self.assertTrue(kernel.loadavg == "Unknown")
def test_kernel_loadavg_namespace(self):
self.cycle_namespace()
from crash.cache.syscache import kernel
x = kernel.loadavg
self.assertTrue(x == "0.17 0.05 0.01")
def test_kernel_loadavg_namespace_nofile(self):
self.clear_namespace()
from crash.cache.syscache import kernel
self.assertTrue(kernel.loadavg == "Unknown")