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test.py
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# Unit tests for OOMAnalyser
#
# Copyright (c) 2021-2024 Carsten Grohmann
# License: MIT (see LICENSE.txt)
# THIS PROGRAM COMES WITH NO WARRANTY
import http.server
import os
import re
import socketserver
import threading
import unittest
from selenium.webdriver.support.ui import Select
from selenium import webdriver
from selenium.common.exceptions import *
from selenium.webdriver.chrome.service import Service
from selenium.webdriver.common.by import By
from webdriver_manager.chrome import ChromeDriverManager
import warnings
import OOMAnalyser
class MyRequestHandler(http.server.SimpleHTTPRequestHandler):
def __init__(self, request, client_address, server, directory=None):
self.directory = os.getcwd()
super().__init__(request, client_address, server)
# suppress all HTTP request messages
def log_message(self, format, *args):
# super().log_message(format, *args)
pass
class ThreadedTCPServer(socketserver.ThreadingMixIn, socketserver.TCPServer):
pass
class TestBase(unittest.TestCase):
text_alloc_failed_below_low_watermark = (
"The request failed because the free memory would be below the memory low "
"watermark after its completion."
)
text_alloc_failed_no_free_chunks = (
"The request failed because there is no free chunk in the current or "
"higher order."
)
text_alloc_failed_unknown_reason = "The request failed, but the reason is unknown."
text_mem_not_heavily_fragmented = "The system memory is not heavily fragmented"
text_mem_heavily_fragmented = "The system memory is heavily fragmented"
text_oom_triggered_manually = "OOM killer was manually triggered"
text_oom_triggered_automatically = "OOM killer was automatically triggered"
text_swap_space_not_in_use = "physical memory and no swap space"
text_swap_space_are_in_use = "swap space are in use"
test_swap_no_space = "No swap space available"
test_swap_swap_total = "Swap Total"
text_with_an_oom_score_of = "with an OOM score of"
def get_lines(self, text, count):
"""
Return the number of lines specified by count from given text
@type text: str
@type count: int
"""
lines = text.splitlines()
if count < 0:
lines.reverse()
count = count * -1
lines = lines[:count]
res = "\n".join(lines)
return res
def get_first_line(self, text):
"""
Return the first line of the given text
@type text: str
"""
return self.get_lines(text, 1)
def get_last_line(self, text):
"""
Return the last line of the given text
@type text: str
"""
return self.get_lines(text, -1)
def check_meminfo_format_rhel7(self, prefix, oom_text):
"""
Check if the example contains a proper formatted "Mem-Info:" block
@param str prefix: Prefix for error message
@param str oom_text: Whole OOM block as text
@see: OOMAnalyser.OOMDisplay.example_rhel7
"""
found = False
for line in oom_text.split("\n"):
if "active_file:1263 " in line:
found = True
self.assertTrue(
line.startswith(" active_file:1263 "),
f'{prefix}: Unexpected prefix for third "Mem-Info:" block line: >>>{line}<<<',
)
self.assertTrue(
found,
f'{prefix}: Missing content "active_file:1263 " in "Mem-Info:" block of\n{oom_text}',
)
class TestInBrowser(TestBase):
"""Test OOM web page in a browser"""
def setUp(self):
warnings.simplefilter("ignore", ResourceWarning)
ThreadedTCPServer.allow_reuse_address = True
self.httpd = ThreadedTCPServer(("127.0.0.1", 8000), MyRequestHandler)
server_thread = threading.Thread(target=self.httpd.serve_forever, args=(0.1,))
server_thread.daemon = True
server_thread.start()
# silent Webdriver Manager
os.environ["WDM_LOG_LEVEL"] = "0"
# store driver locally
os.environ["WDM_LOCAL"] = "1"
s = Service(ChromeDriverManager().install())
self.driver = webdriver.Chrome(service=s)
self.driver.get("http://127.0.0.1:8000/OOMAnalyser.html")
def tearDown(self):
self.driver.close()
self.httpd.shutdown()
self.httpd.server_close()
def assert_on_warn(self):
notify_box = self.driver.find_element(By.ID, "notify_box")
try:
warning = notify_box.find_element(
By.CLASS_NAME, "js-notify_box__msg--warning"
)
except NoSuchElementException:
pass
else:
self.fail('Unexpected warning message: "%s"' % warning.text)
def assert_on_error(self):
error = self.get_first_error_msg()
if error:
self.fail('Unexpected error message: "%s"' % error)
for event in self.driver.get_log("browser"):
# ignore favicon.ico errors
if "favicon.ico" in event["message"]:
continue
self.fail('Error on browser console reported: "%s"' % event)
def assert_on_warn_error(self):
self.assert_on_warn()
self.assert_on_error()
def click_analyse_button(self):
analyse = self.driver.find_element(
By.XPATH, '//button[text()="Analyse OOM block"]'
)
analyse.click()
def click_reset_button(self):
reset = self.driver.find_element(By.XPATH, '//button[text()="Reset form"]')
if reset.is_displayed():
reset.click()
else:
new_analysis = self.driver.find_element(
By.XPATH, '//a[contains(text(), "Step 1 - Enter your OOM message")]'
)
new_analysis.click()
self.assert_on_warn_error()
def get_first_error_msg(self):
"""
Return first (oldest) error message from error notification box or an empty
string if no error message exists.
@rtype: str
"""
notify_box = self.driver.find_element(By.ID, "notify_box")
try:
first_error_msg = notify_box.find_element(
By.CLASS_NAME, "js-notify_box__msg--error"
)
return first_error_msg.text
except NoSuchElementException:
return ""
def insert_example(self, select_value):
"""
Select and insert example from the combobox
@param str select_value: Option value to specify the example
"""
textarea = self.driver.find_element(By.ID, "textarea_oom")
self.assertEqual(textarea.get_attribute("value"), "", "Empty textarea expected")
select_element = self.driver.find_element(By.ID, "examples")
select = Select(select_element)
option_values = [o.get_attribute("value") for o in select.options]
self.assertTrue(
select_value in option_values,
"Missing proper option for example %s" % select_value,
)
select.select_by_value(select_value)
self.assertNotEqual(
textarea.get_attribute("value"), "", "Missing OOM text in textarea"
)
h3_summary = self.driver.find_element(By.XPATH, '//h3[text()="Summary"]')
self.assertFalse(
h3_summary.is_displayed(),
"Analysis details incl. <h3>Summary</h3> should be not displayed",
)
def analyse_oom(self, text):
"""
Insert text and run analysis
:param str text: OOM text to analyse
"""
textarea = self.driver.find_element(By.ID, "textarea_oom")
self.assertEqual(textarea.get_attribute("value"), "", "Empty textarea expected")
textarea.send_keys(text)
self.assertNotEqual(
textarea.get_attribute("value"), "", "Missing OOM text in textarea"
)
h3_summary = self.driver.find_element(By.XPATH, '//h3[text()="Summary"]')
self.assertFalse(
h3_summary.is_displayed(),
"Analysis details incl. <h3>Summary</h3> should be not displayed",
)
self.click_analyse_button()
def check_results_archlinux_6_1_1(self):
"""Check the results of the analysis of the ArchLinux 6.1.1 example"""
self.assert_on_warn_error()
h3_summary = self.driver.find_element(By.XPATH, '//h3[text()="Summary"]')
self.assertTrue(
h3_summary.is_displayed(),
"Analysis details incl. <h3>Summary</h3> should be displayed",
)
trigger_proc_name = self.driver.find_element(By.CLASS_NAME, "trigger_proc_name")
self.assertEqual(
trigger_proc_name.text, "doxygen", "Unexpected trigger process name"
)
trigger_proc_pid = self.driver.find_element(By.CLASS_NAME, "trigger_proc_pid")
self.assertEqual(
trigger_proc_pid.text,
"473206",
"Unexpected trigger process pid: --%s--" % trigger_proc_pid.text,
)
trigger_proc_gfp_mask = self.driver.find_element(
By.CLASS_NAME, "trigger_proc_gfp_mask"
)
# 0x140dca will split into
# GFP_HIGHUSER_MOVABLE -> 0x100cca
# (GFP_HIGHUSER | __GFP_MOVABLE | __GFP_SKIP_KASAN_POISON | __GFP_SKIP_KASAN_UNPOISON)
# GFP_HIGHUSER
# GFP_USER
# __GFP_RECLAIM
# ___GFP_DIRECT_RECLAIM 0x400
# ___GFP_KSWAPD_RECLAIM 0x800
# __GFP_IO 0x40
# __GFP_FS 0x80
# __GFP_HARDWALL 0x100000
# __GFP_HIGHMEM 0x02
# __GFP_MOVABLE 0x08
# __GFP_SKIP_KASAN_POISON 0x00
# __GFP_SKIP_KASAN_UNPOISON 0x00
# __GFP_COMP 0x40000
# __GFP_ZERO 0x100
# sum: 0x140dca
self.assertEqual(
trigger_proc_gfp_mask.text,
"0x140dca (GFP_HIGHUSER_MOVABLE|__GFP_COMP|__GFP_ZERO)",
"Unexpected GFP Mask",
)
killed_proc_score = self.driver.find_element(By.CLASS_NAME, "killed_proc_score")
self.assertTrue(
not killed_proc_score.text,
"Unexpected statement for OOM score of killed process",
)
swap_cache_kb = self.driver.find_element(By.CLASS_NAME, "swap_cache_kb")
self.assertEqual(swap_cache_kb.text, "99452 kBytes")
swap_used_kb = self.driver.find_element(By.CLASS_NAME, "swap_used_kb")
self.assertEqual(swap_used_kb.text, "25066284 kBytes")
swap_free_kb = self.driver.find_element(By.CLASS_NAME, "swap_free_kb")
self.assertEqual(swap_free_kb.text, "84 kBytes")
swap_total_kb = self.driver.find_element(By.CLASS_NAME, "swap_total_kb")
self.assertEqual(swap_total_kb.text, "25165820 kBytes")
explanation = self.driver.find_element(By.ID, "explanation")
for expected in [
self.text_alloc_failed_below_low_watermark,
self.text_mem_not_heavily_fragmented,
self.text_oom_triggered_automatically,
self.text_swap_space_are_in_use,
]:
self.assertTrue(
expected in explanation.text,
'Missing statement in OOM summary: "%s"' % expected,
)
for unexpected in [
self.text_alloc_failed_no_free_chunks,
self.text_alloc_failed_unknown_reason,
self.text_mem_heavily_fragmented,
self.text_oom_triggered_manually,
self.text_swap_space_not_in_use,
self.text_with_an_oom_score_of,
]:
self.assertTrue(
unexpected not in explanation.text,
'Unexpected statement in OOM summary: "%s"' % unexpected,
)
result_table = self.driver.find_element(By.CLASS_NAME, "result__table")
for expected in [
self.test_swap_swap_total,
]:
self.assertTrue(
expected in result_table.text,
'Missing statement in result table: "%s"' % expected,
)
for unexpected in [
self.test_swap_no_space,
]:
self.assertTrue(
unexpected not in result_table.text,
'Unexpected statement in result table: "%s"' % unexpected,
)
self.assertTrue(
"system has 16461600 kBytes physical memory and 25165820 kBytes swap space."
in explanation.text,
"Physical and swap memory in summary not found",
)
self.assertTrue(
"That's 41627420 kBytes total." in explanation.text,
"Total memory in summary not found",
)
self.assertTrue(
"69 % (11513452 kBytes out of 16461600 kBytes) physical memory"
in explanation.text,
"Used physical memory in summary not found",
)
self.assertTrue(
"99 % (25066284 kBytes out of 25165820 kBytes) swap space"
in explanation.text,
"Used swap space in summary not found",
)
mem_node_info = self.driver.find_element(By.CLASS_NAME, "mem_node_info")
self.assertEqual(
mem_node_info.text[:44],
"Node 0 DMA: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB",
"Unexpected memory chunks",
)
self.assertEqual(
mem_node_info.text[-80:],
"Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB",
"Unexpected memory information about hugepages",
)
mem_watermarks = self.driver.find_element(By.CLASS_NAME, "mem_watermarks")
self.assertEqual(
mem_watermarks.text[:51],
"Node 0 DMA free:13312kB boost:0kB min:64kB low:80kB",
"Unexpected memory watermarks",
)
self.assertEqual(
mem_watermarks.text[-27:],
"lowmem_reserve[]: 0 0 0 0 0",
"Unexpected lowmem_reserve values",
)
header = self.driver.find_element(By.ID, "pstable_header")
self.assertTrue(
"Page Table Bytes" in header.text,
'Missing column header "Page Table Bytes"',
)
self.check_swap_active()
def check_results_rhel7(self):
"""Check the results of the analysis of the RHEL7 example"""
self.assert_on_warn_error()
h3_summary = self.driver.find_element(By.XPATH, '//h3[text()="Summary"]')
self.assertTrue(
h3_summary.is_displayed(),
"Analysis details incl. <h3>Summary</h3> should be displayed",
)
trigger_proc_name = self.driver.find_element(By.CLASS_NAME, "trigger_proc_name")
self.assertEqual(
trigger_proc_name.text, "sed", "Unexpected trigger process name"
)
trigger_proc_pid = self.driver.find_element(By.CLASS_NAME, "trigger_proc_pid")
self.assertEqual(
trigger_proc_pid.text, "29481", "Unexpected trigger process pid"
)
trigger_proc_gfp_mask = self.driver.find_element(
By.CLASS_NAME, "trigger_proc_gfp_mask"
)
# 0x201da will split into
# GFP_HIGHUSER_MOVABLE 0x200da
# (__GFP_WAIT | __GFP_IO | __GFP_FS | __GFP_HARDWALL | __GFP_HIGHMEM | __GFP_MOVABLE)
# __GFP_WAIT 0x10
# __GFP_IO 0x40
# __GFP_FS 0x80
# __GFP_HARDWALL 0x20000
# __GFP_HIGHMEM 0x02
# __GFP_MOVABLE 0x08
# __GFP_COLD 0x100
# sum: 0x201da
self.assertEqual(
trigger_proc_gfp_mask.text,
"0x201da (GFP_HIGHUSER_MOVABLE | __GFP_COLD)",
"Unexpected GFP Mask",
)
killed_proc_score = self.driver.find_element(By.CLASS_NAME, "killed_proc_score")
self.assertEqual(
killed_proc_score.text, "651", "Unexpected OOM score of killed process"
)
swap_cache_kb = self.driver.find_element(By.CLASS_NAME, "swap_cache_kb")
self.assertEqual(swap_cache_kb.text, "45368 kBytes")
swap_used_kb = self.driver.find_element(By.CLASS_NAME, "swap_used_kb")
self.assertEqual(swap_used_kb.text, "8343236 kBytes")
swap_free_kb = self.driver.find_element(By.CLASS_NAME, "swap_free_kb")
self.assertEqual(swap_free_kb.text, "0 kBytes")
swap_total_kb = self.driver.find_element(By.CLASS_NAME, "swap_total_kb")
self.assertEqual(swap_total_kb.text, "8388604 kBytes")
explanation = self.driver.find_element(By.ID, "explanation")
for expected in [
self.text_alloc_failed_below_low_watermark,
self.text_mem_not_heavily_fragmented,
self.text_oom_triggered_automatically,
self.text_swap_space_are_in_use,
self.text_with_an_oom_score_of,
]:
self.assertTrue(
expected in explanation.text,
'Missing statement in OOM summary: "%s"' % expected,
)
for unexpected in [
self.text_alloc_failed_no_free_chunks,
self.text_alloc_failed_unknown_reason,
self.text_mem_heavily_fragmented,
self.text_oom_triggered_manually,
self.text_swap_space_not_in_use,
]:
self.assertTrue(
unexpected not in explanation.text,
'Unexpected statement in OOM summary: "%s"' % unexpected,
)
result_table = self.driver.find_element(By.CLASS_NAME, "result__table")
for expected in [
self.test_swap_swap_total,
]:
self.assertTrue(
expected in result_table.text,
'Missing statement in result table: "%s"' % expected,
)
for unexpected in [
self.test_swap_no_space,
]:
self.assertTrue(
unexpected not in result_table.text,
'Unexpected statement in result table: "%s"' % unexpected,
)
self.assertTrue(
"system has 33519336 kBytes physical memory and 8388604 kBytes swap space."
in explanation.text,
"Physical and swap memory in summary not found",
)
self.assertTrue(
"That's 41907940 kBytes total." in explanation.text,
"Total memory in summary not found",
)
self.assertTrue(
"94 % (31705788 kBytes out of 33519336 kBytes) physical memory"
in explanation.text,
"Used physical memory in summary not found",
)
self.assertTrue(
"99 % (8343236 kBytes out of 8388604 kBytes) swap space"
in explanation.text,
"Used swap space in summary not found",
)
mem_node_info = self.driver.find_element(By.CLASS_NAME, "mem_node_info")
self.assertEqual(
mem_node_info.text[:44],
"Node 0 DMA: 0*4kB 0*8kB 0*16kB 0*32kB 2*64kB",
"Unexpected memory chunks",
)
self.assertEqual(
mem_node_info.text[-80:],
"Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB",
"Unexpected memory information about hugepages",
)
mem_watermarks = self.driver.find_element(By.CLASS_NAME, "mem_watermarks")
self.assertEqual(
mem_watermarks.text[:51],
"Node 0 DMA free:15872kB min:40kB low:48kB high:60kB",
"Unexpected memory watermarks",
)
self.assertEqual(
mem_watermarks.text[-25:],
"lowmem_reserve[]: 0 0 0 0",
"Unexpected lowmem_reserve values",
)
header = self.driver.find_element(By.ID, "pstable_header")
self.assertTrue(
"Page Table Entries" in header.text,
'Missing column header "Page Table Entries"',
)
self.check_swap_active()
def check_results_ubuntu2110(self):
"""Check the results of the analysis of the Ubuntu example"""
trigger_proc_gfp_mask = self.driver.find_element(
By.CLASS_NAME, "trigger_proc_gfp_mask"
)
# 0xcc0 will split into
# GFP_KERNEL (__GFP_RECLAIM | __GFP_IO | __GFP_FS)
# __GFP_RECLAIM (___GFP_DIRECT_RECLAIM | ___GFP_KSWAPD_RECLAIM)
# ___GFP_DIRECT_RECLAIM 0x400
# ___GFP_KSWAPD_RECLAIM 0x800
# __GFP_IO 0x40
# __GFP_FS 0x80
# sum: 0xCC0
self.assertEqual(
trigger_proc_gfp_mask.text, "0xcc0 (GFP_KERNEL)", "Unexpected GFP Mask"
)
dirty_pages = self.driver.find_element(By.CLASS_NAME, "dirty_pages")
self.assertEqual(
dirty_pages.text, "633 pages", "Unexpected number of dirty pages"
)
ram_pages = self.driver.find_element(By.CLASS_NAME, "ram_pages")
self.assertEqual(
ram_pages.text, "524158 pages", "Unexpected number of RAM pages"
)
explanation = self.driver.find_element(By.ID, "explanation")
for expected in [
self.text_oom_triggered_manually,
self.text_swap_space_not_in_use,
]:
self.assertTrue(
expected in explanation.text,
'Missing statement in OOM summary: "%s"' % expected,
)
for unexpected in [
self.text_alloc_failed_below_low_watermark,
self.text_alloc_failed_no_free_chunks,
self.text_alloc_failed_unknown_reason,
self.text_mem_heavily_fragmented,
self.text_mem_not_heavily_fragmented,
self.text_oom_triggered_automatically,
self.text_with_an_oom_score_of,
]:
self.assertTrue(
unexpected not in explanation.text,
'Unexpected statement in OOM summary: "%s"' % unexpected,
)
result_table = self.driver.find_element(By.CLASS_NAME, "result__table")
for expected in [
self.test_swap_no_space,
]:
self.assertTrue(
expected in result_table.text,
'Missing statement in result table: "%s"' % expected,
)
for unexpected in [
self.test_swap_swap_total,
]:
self.assertTrue(
unexpected not in result_table.text,
'Unexpected statement in result table: "%s"' % unexpected,
)
self.assertTrue(
"system has 2096632 kBytes physical memory" in explanation.text,
"Physical memory in summary not found",
)
self.assertTrue(
"9 % (209520 kBytes out of 2096632 kBytes) physical memory"
in explanation.text,
"Used physical memory in summary not found",
)
mem_node_info = self.driver.find_element(By.CLASS_NAME, "mem_node_info")
self.assertEqual(
mem_node_info.text[:49],
"Node 0 DMA: 1*4kB (U) 1*8kB (U) 1*16kB (U) 1*32kB",
"Unexpected memory chunks",
)
self.assertEqual(
mem_node_info.text[-80:],
"Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB",
"Unexpected memory information about hugepages",
)
mem_watermarks = self.driver.find_element(By.CLASS_NAME, "mem_watermarks")
self.assertEqual(
mem_watermarks.text[:54],
"Node 0 DMA free:15036kB min:352kB low:440kB high:528kB",
"Unexpected memory watermarks",
)
self.assertEqual(
mem_watermarks.text[-27:],
"lowmem_reserve[]: 0 0 0 0 0",
"Unexpected lowmem_reserve values",
)
header = self.driver.find_element(By.ID, "pstable_header")
self.assertTrue(
"Page Table Bytes" in header.text,
'Missing column header "Page Table Bytes"',
)
self.check_swap_inactive()
def check_swap_inactive(self):
explanation = self.driver.find_element(By.ID, "explanation")
self.assertTrue(
self.text_swap_space_not_in_use in explanation.text,
'Missing statement "%s"' % self.text_swap_space_not_in_use,
)
self.assertTrue(
self.text_swap_space_are_in_use not in explanation.text,
'Unexpected statement "%s"' % self.text_swap_space_are_in_use,
)
def check_swap_active(self):
explanation = self.driver.find_element(By.ID, "explanation")
self.assertTrue(
self.text_swap_space_are_in_use in explanation.text,
'Missing statement "%s"' % self.text_swap_space_are_in_use,
)
def test_010_load_page(self):
"""Test if the page is loading"""
assert "OOMAnalyser" in self.driver.title
def test_020_load_js(self):
"""Test if JS is loaded"""
elem = self.driver.find_element(By.ID, "version")
self.assertIsNotNone(elem.text, "Version statement not set - JS not loaded")
def test_030_insert_and_analyse_rhel7_example(self):
"""Test loading and analysing RHEL7 example"""
self.insert_example("RHEL7")
self.click_analyse_button()
self.check_results_rhel7()
def test_031_insert_and_analyse_ubuntu_example(self):
"""Test loading and analysing Ubuntu 21.10 example"""
self.insert_example("Ubuntu_2110")
self.click_analyse_button()
self.check_results_ubuntu2110()
def test_032_insert_and_analyse_archlinux_example(self):
"""Test loading and analysing ArchLinux 6.1.1 example"""
self.insert_example("ArchLinux")
self.click_analyse_button()
self.check_results_archlinux_6_1_1()
def test_033_empty_textarea(self):
"""Test "Analyse" with empty textarea"""
textarea = self.driver.find_element(By.ID, "textarea_oom")
self.assertEqual(textarea.get_attribute("value"), "", "Empty textarea expected")
# textarea.send_keys(text)
self.assertEqual(
textarea.get_attribute("value"),
"",
"Expected empty text area, but text found",
)
h3_summary = self.driver.find_element(By.XPATH, '//h3[text()="Summary"]')
self.assertFalse(
h3_summary.is_displayed(),
"Analysis details incl. <h3>Summary</h3> should be not displayed",
)
self.click_analyse_button()
self.assertEqual(
self.get_first_error_msg(),
"ERROR: Empty OOM text. Please insert an OOM message block.",
)
self.click_reset_button()
def test_034_begin_but_no_end(self):
"""Test incomplete OOM text - just the beginning"""
example = """\
sed invoked oom-killer: gfp_mask=0x201da, order=0, oom_score_adj=0
sed cpuset=/ mems_allowed=0-1
CPU: 4 PID: 29481 Comm: sed Not tainted 3.10.0-514.6.1.el7.x86_64 #1
"""
self.analyse_oom(example)
self.assertEqual(
self.get_first_error_msg(),
"ERROR: The inserted OOM is incomplete! The initial pattern was "
"found but not the final.",
)
self.click_reset_button()
def test_035_no_begin_but_end(self):
"""Test incomplete OOM text - just the end"""
example = """\
Out of memory: Kill process 6576 (java) score 651 or sacrifice child
Killed process 6576 (java) total-vm:33914892kB, anon-rss:20629004kB, file-rss:0kB, shmem-rss:0kB
"""
self.analyse_oom(example)
self.assertEqual(
self.get_first_error_msg(),
"ERROR: Failed to extract kernel version from OOM text",
)
self.click_reset_button()
def test_036_loading_journalctl_input(self):
"""Test loading input from journalctl
The second part of the "Mem-Info:" block as starting with the third
line has not a prefix like the lines before and after it. It is
indented only by a single space.
"""
for prefix in [
"Apr 01 14:13:32 mysrv <kern.warning> kernel:",
"[1234567.654321]",
]:
# prepare example
example_lines = OOMAnalyser.OOMDisplay.example_rhel7.split("\n")
res = []
# unescape #012 - see OOMAnalyser.OOMEntity._rsyslog_unescape_lf()
for line in example_lines:
if "#012" in line:
res.extend(line.split("#012"))
else:
res.append(line)
example_lines = res
res = []
# add date/time prefix except for "Mem-Info:" block
for line in example_lines:
if not OOMAnalyser.OOMEntity.REC_MEMINFO_BLOCK_SECOND_PART.search(line):
line = f"{prefix} {line}"
res.append(line)
example = "\n".join(res)
self.check_meminfo_format_rhel7(
f'Unprocessed example with prefix "{prefix}"', example
)
oom = OOMAnalyser.OOMEntity(example)
self.check_meminfo_format_rhel7(
f'Processed example after OOMEntity() with prefix "{prefix}"', oom.text
)
self.analyse_oom(example)
self.check_results_rhel7()
self.click_reset_button()
def test_040_trigger_proc_space(self):
"""Test trigger process name contains a space"""
example = OOMAnalyser.OOMDisplay.example_rhel7
example = example.replace("sed", "VM Monitoring Task")
self.analyse_oom(example)
self.assert_on_warn_error()
h3_summary = self.driver.find_element(By.XPATH, '//h3[text()="Summary"]')
self.assertTrue(
h3_summary.is_displayed(),
"Analysis details incl. <h3>Summary</h3> should be displayed",
)
def test_050_kill_proc_space(self):
"""Test killed process name contains a space"""
example = OOMAnalyser.OOMDisplay.example_rhel7
example = example.replace("mysqld", "VM Monitoring Task")
self.analyse_oom(example)
self.assert_on_warn_error()
h3_summary = self.driver.find_element(By.XPATH, '//h3[text()="Summary"]')
self.assertTrue(
h3_summary.is_displayed(),
"Analysis details incl. <h3>Summary</h3> should be displayed",
)
def test_060_removal_of_leading_but_useless_columns_rhel7(self):
"""
Test removal of leading but useless columns with RHEL7 example
In this test, the lines of the "Mem-Info:" block are joined
together with #012 to form a single line. Therefore, the prefix
test must handle the additional leading spaces in these lines.
The selected example tests this behavior.
@see: test_061_removal_of_leading_but_useless_columns_archlinux()
"""
self.analyse_oom(OOMAnalyser.OOMDisplay.example_rhel7)
self.check_results_rhel7()
self.click_reset_button()
for prefix in [
"[11686.888109] ",
"Apr 01 14:13:32 mysrv: ",
"Apr 01 14:13:32 mysrv kernel: ",
"Apr 01 14:13:32 mysrv <kern.warning> kernel: ",
"Apr 01 14:13:32 mysrv kernel: [11686.888109] ",
"kernel:",
"Apr 01 14:13:32 mysrv <kern.warning> kernel:",
]:
lines = OOMAnalyser.OOMDisplay.example_rhel7.split("\n")
lines = ["{}{}".format(prefix, line) for line in lines]
oom_text = "\n".join(lines)
self.analyse_oom(oom_text)
self.check_results_rhel7()
self.click_reset_button()
def test_061_removal_of_leading_but_useless_columns_archlinux(self):
"""
Test removal of leading but useless columns with ArchLinux example
In this test, the lines of the "Mem-Info:" block are not joined
together with #012 to form a line, but are separate lines. Therefore,
the prefix test must handle the additional leading spaces in these
lines. The selected example tests this behavior.
@see: test_060_removal_of_leading_but_useless_columns_rhel7()
"""
self.analyse_oom(OOMAnalyser.OOMDisplay.example_archlinux_6_1_1)
self.check_results_archlinux_6_1_1()
self.click_reset_button()
for prefix in [
"[11686.888109] ",
"Apr 01 14:13:32 mysrv: ",
"Apr 01 14:13:32 mysrv kernel: ",
"Apr 01 14:13:32 mysrv <kern.warning> kernel: ",
"Apr 01 14:13:32 mysrv kernel: [11686.888109] ",
"kernel:",
"Apr 01 14:13:32 mysrv <kern.warning> kernel:",
]:
lines = OOMAnalyser.OOMDisplay.example_archlinux_6_1_1.split("\n")
new_lines = []
for line in lines:
if OOMAnalyser.OOMEntity.REC_MEMINFO_BLOCK_SECOND_PART.search(line):
new_line = "{}{}".format(" " * len(prefix), line)
else:
new_line = "{}{}".format(prefix, line)
new_lines.append(new_line)
oom_text = "\n".join(new_lines)
self.analyse_oom(oom_text)
self.check_results_archlinux_6_1_1()
self.click_reset_button()
def test_070_manually_triggered_OOM(self):
"""Test for manually triggered OOM"""
example = OOMAnalyser.OOMDisplay.example_rhel7
example = example.replace("order=0", "order=-1")
self.analyse_oom(example)
self.assert_on_warn_error()
explanation = self.driver.find_element(By.ID, "explanation")
self.assertTrue(
self.text_oom_triggered_manually in explanation.text,
'Missing statement "%s"' % self.text_oom_triggered_manually,
)
self.assertTrue(
self.text_oom_triggered_automatically not in explanation.text,
'Unexpected statement "%s"' % self.text_oom_triggered_automatically,
)
def test_080_swap_deactivated(self):
"""Test w/o swap or with deactivated swap"""
example = OOMAnalyser.OOMDisplay.example_rhel7
example = example.replace("Total swap = 8388604kB", "Total swap = 0kB")
self.analyse_oom(example)
self.assert_on_warn_error()
self.check_swap_inactive()
self.click_reset_button()
example = OOMAnalyser.OOMDisplay.example_rhel7
example = re.sub(r"\d+ pages in swap cac.*\n*", "", example, re.MULTILINE)
example = re.sub(r"Swap cache stats.*\n*", "", example)
example = re.sub(r"Free swap.*\n*", "", example)
example = re.sub(r"Total swap.*\n*", "", example)
self.analyse_oom(example)
self.assert_on_warn_error()
self.check_swap_inactive()
class TestPython(TestBase):
def test_001_trigger_proc_space(self):
"""Test RE to find name of trigger process"""
first = self.get_first_line(OOMAnalyser.OOMDisplay.example_rhel7)
pattern = OOMAnalyser.OOMAnalyser.oom_result.kconfig.EXTRACT_PATTERN[
"invoked oom-killer"
][0]
rec = re.compile(pattern, re.MULTILINE)
match = rec.search(first)
self.assertTrue(
match,
"Error: re.search('invoked oom-killer') failed for simple process name",
)
first = first.replace("sed", "VM Monitoring Task")
match = rec.search(first)
self.assertTrue(
match,
"Error: re.search('invoked oom-killer') failed for process name with space",
)
def test_002_killed_proc_space(self):
"""Test RE to find name of killed process"""
text = self.get_lines(OOMAnalyser.OOMDisplay.example_rhel7, -2)
pattern = OOMAnalyser.OOMAnalyser.oom_result.kconfig.EXTRACT_PATTERN[
"Process killed by OOM"
][0]
rec = re.compile(pattern, re.MULTILINE)
match = rec.search(text)
self.assertTrue(
match,
"Error: re.search('Process killed by OOM') failed for simple process name",
)
text = text.replace("sed", "VM Monitoring Task")
match = rec.search(text)
self.assertTrue(
match,
"Error: re.search('Process killed by OOM') failed for process name with space",
)
def test_003_OOMEntity_number_of_columns_to_strip(self):
"""Test stripping useless / leading columns"""
oom_entity = OOMAnalyser.OOMEntity(OOMAnalyser.OOMDisplay.example_rhel7)
for pos, line in [
(
1,
"[11686.888109] CPU: 4 PID: 29481 Comm: sed Not tainted 3.10.0-514.6.1.el7.x86_64 #1",
),
(
5,
"Apr 01 14:13:32 mysrv kernel: CPU: 4 PID: 29481 Comm: sed Not tainted 3.10.0-514.6.1.el7.x86_64 #1",
),
(
6,
"Apr 01 14:13:32 mysrv kernel: [11686.888109] CPU: 4 PID: 29481 Comm: sed Not tainted 3.10.0-514.6.1.el7.x86_64 #1",
),
]:
to_strip = oom_entity._number_of_columns_to_strip(line)
self.assertEqual(
to_strip,
pos,
'Calc wrong number of columns to strip for "%s": got: %d, expect: %d'
% (line, to_strip, pos),
)
def test_004_extract_block_from_next_pos(self):
"""Test extracting a single block (all lines till the next line with a colon)"""
oom = OOMAnalyser.OOMEntity(OOMAnalyser.OOMDisplay.example_rhel7)
analyser = OOMAnalyser.OOMAnalyser(oom)
text = analyser._extract_block_from_next_pos("Hardware name:")
expected = """\
Hardware name: HP ProLiant DL385 G7, BIOS A18 12/08/2012
ffff880182272f10 00000000021dcb0a ffff880418207938 ffffffff816861ac
ffff8804182079c8 ffffffff81681157 ffffffff810eab9c ffff8804182fe910
ffff8804182fe928 0000000000000202 ffff880182272f10 ffff8804182079b8