514 lines
22 KiB
Python
Executable File
514 lines
22 KiB
Python
Executable File
# Unit tests for OOMAnalyser
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#
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# Copyright (c) 2021-2022 Carsten Grohmann
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# License: MIT (see LICENSE.txt)
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# THIS PROGRAM COMES WITH NO WARRANTY
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import http.server
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import os
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import re
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import socketserver
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import threading
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import unittest
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from selenium import webdriver
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from selenium.common.exceptions import *
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from selenium.webdriver.chrome.service import Service
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from selenium.webdriver.common.by import By
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from webdriver_manager.chrome import ChromeDriverManager
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import warnings
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import OOMAnalyser
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class MyRequestHandler(http.server.SimpleHTTPRequestHandler):
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def __init__(self, request, client_address, server, directory=None):
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self.directory = os.getcwd()
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super().__init__(request, client_address, server)
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# suppress all HTTP request messages
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def log_message(self, format, *args):
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# super().log_message(format, *args)
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pass
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class ThreadedTCPServer(socketserver.ThreadingMixIn, socketserver.TCPServer):
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pass
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class TestBase(unittest.TestCase):
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def get_lines(self, text, count):
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"""
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Return the number of lines specified by count from given text
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@type text: str
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@type count: int
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"""
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lines = text.splitlines()
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if count < 0:
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lines.reverse()
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count = count * -1
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lines = lines[:count]
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res = '\n'.join(lines)
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return res
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def get_first_line(self, text):
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"""
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Return the first line of the given text
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@type text: str
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"""
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return self.get_lines(text, 1)
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def get_last_line(self, text):
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"""
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Return the last line of the given text
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@type text: str
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"""
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return self.get_lines(text, -1)
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class TestInBrowser(TestBase):
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"""Test OOM web page in a browser"""
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def setUp(self):
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warnings.simplefilter("ignore", ResourceWarning)
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ThreadedTCPServer.allow_reuse_address = True
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self.httpd = ThreadedTCPServer(('127.0.0.1', 8000), MyRequestHandler)
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server_thread = threading.Thread(target=self.httpd.serve_forever, args=(0.1,))
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server_thread.daemon = True
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server_thread.start()
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# silent Webdriver Manager
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os.environ['WDM_LOG_LEVEL'] = '0'
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# store driver locally
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os.environ['WDM_LOCAL'] = '1'
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s=Service(ChromeDriverManager().install())
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self.driver = webdriver.Chrome(service=s)
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self.driver.get("http://127.0.0.1:8000/OOMAnalyser.html")
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def tearDown(self):
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self.driver.close()
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self.httpd.shutdown()
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self.httpd.server_close()
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def assert_on_warn(self):
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notify_box = self.driver.find_element(By.ID, 'notify_box')
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try:
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warning = notify_box.find_element(By.CLASS_NAME, 'js-notify_box__msg--warning')
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except NoSuchElementException:
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pass
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else:
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self.fail('Unexpected warning message: "%s"' % warning.text)
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def assert_on_error(self):
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error = self.get_error_text()
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if error:
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self.fail('Unexpected error message: "%s"' % error)
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for event in self.driver.get_log('browser'):
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# ignore favicon.ico errors
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if 'favicon.ico' in event['message']:
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continue
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self.fail('Error on browser console reported: "%s"' % event)
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def assert_on_warn_error(self):
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self.assert_on_warn()
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self.assert_on_error()
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def click_analyse(self):
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analyse = self.driver.find_element(By.XPATH, '//button[text()="Analyse"]')
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analyse.click()
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def get_error_text(self):
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"""
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Return text from error notification box or an empty string if no error message exists
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@rtype: str
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"""
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notify_box = self.driver.find_element(By.ID, 'notify_box')
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try:
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notify_box.find_element(By.CLASS_NAME, 'js-notify_box__msg--error')
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except NoSuchElementException:
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return ""
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return notify_box.text
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def click_reset(self):
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reset = self.driver.find_element(By.XPATH, '//button[text()="Reset"]')
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if reset.is_displayed():
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reset.click()
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else:
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new_analysis = self.driver.find_element(By.XPATH, '//a[contains(text(), "Step 1 - Enter your OOM message")]')
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new_analysis.click()
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self.assert_on_warn_error()
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def analyse_oom(self, text):
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"""
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Insert text and run analysis
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:param str text: OOM text to analyse
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"""
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textarea = self.driver.find_element(By.ID, 'textarea_oom')
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self.assertEqual(textarea.get_attribute('value'), '', 'Empty textarea expected')
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textarea.send_keys(text)
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self.assertNotEqual(textarea.get_attribute('value'), '', 'Missing OOM text in textarea')
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h3_summary = self.driver.find_element(By.XPATH, '//h3[text()="Summary"]')
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self.assertFalse(h3_summary.is_displayed(), "Analysis details incl. <h3>Summary</h3> should be not displayed")
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self.click_analyse()
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def check_results_rhel7(self):
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"""Check the results of the analysis of the RHEL7 example"""
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self.assert_on_warn_error()
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h3_summary = self.driver.find_element(By.XPATH, '//h3[text()="Summary"]')
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self.assertTrue(h3_summary.is_displayed(), "Analysis details incl. <h3>Summary</h3> should be displayed")
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trigger_proc_name = self.driver.find_element(By.CLASS_NAME, 'trigger_proc_name')
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self.assertEqual(trigger_proc_name.text, 'sed', 'Unexpected trigger process name')
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trigger_proc_pid = self.driver.find_element(By.CLASS_NAME, 'trigger_proc_pid')
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self.assertEqual(trigger_proc_pid.text, '29481', 'Unexpected trigger process pid')
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killed_proc_score = self.driver.find_element(By.CLASS_NAME, 'killed_proc_score')
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self.assertEqual(killed_proc_score.text, '651', 'Unexpected OOM score of killed process')
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swap_cache_kb = self.driver.find_element(By.CLASS_NAME, 'swap_cache_kb')
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self.assertEqual(swap_cache_kb.text, '45368 kBytes')
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swap_used_kb = self.driver.find_element(By.CLASS_NAME, 'swap_used_kb')
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self.assertEqual(swap_used_kb.text, '8343236 kBytes')
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swap_free_kb = self.driver.find_element(By.CLASS_NAME, 'swap_free_kb')
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self.assertEqual(swap_free_kb.text, '0 kBytes')
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swap_total_kb = self.driver.find_element(By.CLASS_NAME, 'swap_total_kb')
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self.assertEqual(swap_total_kb.text, '8388604 kBytes')
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explanation = self.driver.find_element(By.ID, 'explanation')
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self.assertTrue('OOM killer was automatically triggered' in explanation.text,
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'Missing text "OOM killer was automatically triggered"')
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explanation = self.driver.find_element(By.ID, 'explanation')
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self.assertTrue("system has 33519336 kBytes physical memory and 8388604 kBytes swap space." in explanation.text,
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"Physical and swap memory in summary not found")
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self.assertTrue("That's 41907940 kBytes total." in explanation.text,
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"Total memory in summary not found")
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self.assertTrue("94% (31705788 kBytes out of 33519336 kBytes) physical memory" in explanation.text,
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"Used physical memory in summary not found")
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self.assertTrue("99% (8343236 kBytes out of 8388604 kBytes) swap space" in explanation.text,
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"Used swap space in summary not found")
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head = self.driver.find_element(By.ID, 'pstable_header')
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self.assertTrue('Page Table Entries' in head.text, 'Missing column head line "Page Table Entries"')
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self.check_swap_active()
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def check_results_ubuntu2110(self):
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"""Check the results of the analysis of the Ubuntu example"""
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dirty_pages = self.driver.find_element(By.CLASS_NAME, 'dirty_pages')
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self.assertEqual(dirty_pages.text, '633 pages', 'Unexpected number of dirty pages')
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ram_pages = self.driver.find_element(By.CLASS_NAME, 'ram_pages')
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self.assertEqual(ram_pages.text, '524158 pages', 'Unexpected number of RAM pages')
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explanation = self.driver.find_element(By.ID, 'explanation')
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self.assertTrue('OOM killer was manually triggered' in explanation.text,
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'Missing text "OOM killer was manually triggered"')
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self.assertFalse('with an OOM score of' in explanation.text,
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'No OOM score but text "with an OOM score of"')
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explanation = self.driver.find_element(By.ID, 'explanation')
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self.assertTrue("system has 2096632 kBytes physical memory and no swap space" in explanation.text,
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"Physical and swap memory in summary not found")
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self.assertTrue("9% (209520 kBytes out of 2096632 kBytes) physical memory" in explanation.text,
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"Used physical memory in summary not found")
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head = self.driver.find_element(By.ID, 'pstable_header')
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self.assertTrue('Page Table Bytes' in head.text, 'Missing column head line "Page Table Bytes"')
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self.check_swap_inactive()
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def check_swap_inactive(self):
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explanation = self.driver.find_element(By.ID, 'explanation')
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self.assertTrue('physical memory and no swap space' in explanation.text,
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'Missing text "physical memory and no swap space"')
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self.assertFalse('swap space are in use' in explanation.text,
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'No swap space but text "swap space are in use"')
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def check_swap_active(self):
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explanation = self.driver.find_element(By.ID, 'explanation')
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self.assertTrue('swap space are in use' in explanation.text,
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'Swap space active but no text "swap space are in use"')
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def test_010_load_page(self):
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"""Test if the page is loading"""
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assert "OOMAnalyser" in self.driver.title
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def test_020_load_js(self):
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"""Test if JS is loaded"""
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elem = self.driver.find_element(By.ID, "version")
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self.assertIsNotNone(elem.text, "Version statement not set - JS not loaded")
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def test_030_insert_and_analyse_rhel7_example(self):
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"""Test loading and analysing RHEL7 example"""
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textarea = self.driver.find_element(By.ID, 'textarea_oom')
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self.assertEqual(textarea.get_attribute('value'), '', 'Empty textarea expected')
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insert_example = self.driver.find_element(By.XPATH, '//button[contains(text(), "RHEL7" )]')
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insert_example.click()
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self.assertNotEqual(textarea.get_attribute('value'), '', 'Missing OOM text in textarea')
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h3_summary = self.driver.find_element(By.XPATH, '//h3[text()="Summary"]')
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self.assertFalse(h3_summary.is_displayed(), "Analysis details incl. <h3>Summary</h3> should be not displayed")
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self.click_analyse()
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self.check_results_rhel7()
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def test_031_insert_and_analyse_ubuntu_example(self):
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"""Test loading and analysing Ubuntu 21.10 example"""
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textarea = self.driver.find_element(By.ID, 'textarea_oom')
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self.assertEqual(textarea.get_attribute('value'), '', 'Empty textarea expected')
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insert_example = self.driver.find_element(By.XPATH, '//button[contains(text(), "Ubuntu" )]')
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insert_example.click()
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self.assertNotEqual(textarea.get_attribute('value'), '', 'Missing OOM text in textarea')
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h3_summary = self.driver.find_element(By.XPATH, '//h3[text()="Summary"]')
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self.assertFalse(h3_summary.is_displayed(), "Analysis details incl. <h3>Summary</h3> should be not displayed")
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self.click_analyse()
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self.check_results_ubuntu2110()
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def test_032_empty_textarea(self):
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"""Test "Analyse" with empty textarea"""
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textarea = self.driver.find_element(By.ID, 'textarea_oom')
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self.assertEqual(textarea.get_attribute('value'), '', 'Empty textarea expected')
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# textarea.send_keys(text)
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self.assertEqual(textarea.get_attribute('value'), '', 'Expected empty text area, but text found')
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h3_summary = self.driver.find_element(By.XPATH, '//h3[text()="Summary"]')
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self.assertFalse(h3_summary.is_displayed(), "Analysis details incl. <h3>Summary</h3> should be not displayed")
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self.click_analyse()
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self.assertEqual(self.get_error_text(), "ERROR: Empty OOM text. Please insert an OOM message block.")
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self.click_reset()
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def test_033_begin_but_no_end(self):
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"""Test incomplete OOM text - just the beginning"""
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example = """\
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sed invoked oom-killer: gfp_mask=0x201da, order=0, oom_score_adj=0
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sed cpuset=/ mems_allowed=0-1
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CPU: 4 PID: 29481 Comm: sed Not tainted 3.10.0-514.6.1.el7.x86_64 #1
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"""
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self.analyse_oom(example)
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self.assertEqual(self.get_error_text(), "ERROR: The inserted OOM is incomplete! The initial pattern was "
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"found but not the final.")
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self.click_reset()
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def test_034_no_begin_but_end(self):
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"""Test incomplete OOM text - just the end"""
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example = """\
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Out of memory: Kill process 6576 (java) score 651 or sacrifice child
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Killed process 6576 (java) total-vm:33914892kB, anon-rss:20629004kB, file-rss:0kB, shmem-rss:0kB
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"""
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self.analyse_oom(example)
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self.assertEqual(self.get_error_text(), "ERROR: Failed to extract kernel version from OOM text")
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self.click_reset()
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def test_035_leading_journalctl_input(self):
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"""Test loading input from journalctl """
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# prepare example
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example_lines = OOMAnalyser.OOMDisplay.example_rhel7.split('\n')
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res = []
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# unescape #012 - see OOMAnalyser.OOMEntity._rsyslog_unescape_lf()
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for line in example_lines:
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if '#012' in line:
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res.extend(line.split('#012'))
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else:
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res.append(line)
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example_lines = res
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res = []
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# add date/time prefix except for "Mem-Info:" block
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pattern = r'^ (active_file|unevictable|slab_reclaimable|mapped|free):.+$'
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rec = re.compile(pattern)
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for line in example_lines:
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match = rec.search(line)
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if match:
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line = " {}".format(line)
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else:
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line = "Apr 01 14:13:32 mysrv <kern.warning> kernel: {}".format(line)
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res.append(line)
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example = "\n".join(res)
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self.analyse_oom(example)
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self.check_results_rhel7()
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self.click_reset()
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def test_040_trigger_proc_space(self):
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"""Test trigger process name contains a space"""
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example = OOMAnalyser.OOMDisplay.example_rhel7
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example = example.replace('sed', 'VM Monitoring Task')
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self.analyse_oom(example)
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self.assert_on_warn_error()
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h3_summary = self.driver.find_element(By.XPATH, '//h3[text()="Summary"]')
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self.assertTrue(h3_summary.is_displayed(), "Analysis details incl. <h3>Summary</h3> should be displayed")
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def test_050_kill_proc_space(self):
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"""Test killed process name contains a space"""
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example = OOMAnalyser.OOMDisplay.example_rhel7
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example = example.replace('mysqld', 'VM Monitoring Task')
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self.analyse_oom(example)
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self.assert_on_warn_error()
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h3_summary = self.driver.find_element(By.XPATH, '//h3[text()="Summary"]')
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self.assertTrue(h3_summary.is_displayed(), "Analysis details incl. <h3>Summary</h3> should be displayed")
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def test_060_removal_of_leading_but_useless_columns(self):
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"""Test removal of leading but useless columns"""
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self.analyse_oom(OOMAnalyser.OOMDisplay.example_rhel7)
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self.check_results_rhel7()
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self.click_reset()
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for prefix in ["[11686.888109] ",
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"Apr 01 14:13:32 mysrv: ",
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"Apr 01 14:13:32 mysrv kernel: ",
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"Apr 01 14:13:32 mysrv <kern.warning> kernel: ",
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"Apr 01 14:13:32 mysrv kernel: [11686.888109] ",
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"kernel:",
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"Apr 01 14:13:32 mysrv <kern.warning> kernel:",
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]:
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lines = OOMAnalyser.OOMDisplay.example_rhel7.split('\n')
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lines = ["{}{}".format(prefix, line) for line in lines]
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oom_text = "\n".join(lines)
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self.analyse_oom(oom_text)
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self.check_results_rhel7()
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self.click_reset()
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def test_070_manually_triggered_OOM(self):
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"""Test for manually triggered OOM"""
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example = OOMAnalyser.OOMDisplay.example_rhel7
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example = example.replace('order=0', 'order=-1')
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self.analyse_oom(example)
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self.assert_on_warn_error()
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explanation = self.driver.find_element(By.ID, 'explanation')
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self.assertTrue('OOM killer was manually triggered' in explanation.text,
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'Missing text "OOM killer was manually triggered"')
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def test_080_swap_deactivated(self):
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"""Test w/o swap or with deactivated swap"""
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example = OOMAnalyser.OOMDisplay.example_rhel7
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example = example.replace('Total swap = 8388604kB', 'Total swap = 0kB')
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self.analyse_oom(example)
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self.assert_on_warn_error()
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self.check_swap_inactive()
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self.click_reset()
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example = OOMAnalyser.OOMDisplay.example_rhel7
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example = re.sub(r'\d+ pages in swap cac.*\n*', '', example, re.MULTILINE)
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example = re.sub(r'Swap cache stats.*\n*', '', example)
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example = re.sub(r'Free swap.*\n*', '', example)
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example = re.sub(r'Total swap.*\n*', '', example)
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self.analyse_oom(example)
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self.assert_on_warn_error()
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self.check_swap_inactive()
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class TestPython(TestBase):
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def test_001_trigger_proc_space(self):
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"""Test RE to find name of trigger process"""
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first = self.get_first_line(OOMAnalyser.OOMDisplay.example_rhel7)
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pattern = OOMAnalyser.OOMAnalyser.oom_result.kconfig.EXTRACT_PATTERN['invoked oom-killer'][0]
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rec = re.compile(pattern, re.MULTILINE)
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match = rec.search(first)
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self.assertTrue(match, "Error: re.search('invoked oom-killer') failed for simple process name")
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first = first.replace('sed', 'VM Monitoring Task')
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match = rec.search(first)
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self.assertTrue(match, "Error: re.search('invoked oom-killer') failed for process name with space")
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def test_002_killed_proc_space(self):
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"""Test RE to find name of killed process"""
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text = self.get_lines(OOMAnalyser.OOMDisplay.example_rhel7, -2)
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pattern = OOMAnalyser.OOMAnalyser.oom_result.kconfig.EXTRACT_PATTERN['Process killed by OOM'][0]
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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
|
|
'''
|
|
self.assertEqual(text, expected)
|
|
|
|
def test_005_extract_kernel_version(self):
|
|
"""Test extracting kernel version"""
|
|
oom = OOMAnalyser.OOMEntity(OOMAnalyser.OOMDisplay.example_rhel7)
|
|
analyser = OOMAnalyser.OOMAnalyser(oom)
|
|
for text, kversion in [
|
|
('CPU: 0 PID: 19163 Comm: kworker/0:0 Tainted: G OE 5.4.0-80-lowlatency #90~18.04.1-Ubuntu', '5.4.0-80-lowlatency'),
|
|
('CPU: 4 PID: 1 Comm: systemd Not tainted 3.10.0-1062.9.1.el7.x86_64 #1', '3.10.0-1062.9.1.el7.x86_64'),
|
|
]:
|
|
analyser.oom_entity.text = text
|
|
success = analyser._identify_kernel_version()
|
|
self.assertTrue(analyser._identify_kernel_version(), analyser.oom_result.error_msg)
|
|
self.assertEqual(analyser.oom_result.kversion, kversion)
|
|
|
|
def test_006_choosing_kernel_config(self):
|
|
"""Test choosing the right kernel configuration"""
|
|
for kcfg, kversion in [
|
|
(OOMAnalyser.KernelConfig_5_8(), 'CPU: 4 PID: 29481 Comm: sed Not tainted 5.13.0-514 #1'),
|
|
(OOMAnalyser.KernelConfig_5_8(), 'CPU: 4 PID: 29481 Comm: sed Not tainted 5.8.0-514 #1'),
|
|
(OOMAnalyser.KernelConfig_4_6(), 'CPU: 4 PID: 29481 Comm: sed Not tainted 4.6.0-514 #1'),
|
|
(OOMAnalyser.KernelConfigRhel7(), 'CPU: 4 PID: 29481 Comm: sed Not tainted 3.10.0-1062.9.1.el7.x86_64 #1'),
|
|
(OOMAnalyser.KernelConfig_5_0(), 'CPU: 4 PID: 29481 Comm: sed Not tainted 5.5.1 #1'),
|
|
(OOMAnalyser.KernelConfig_5_8(), 'CPU: 4 PID: 29481 Comm: sed Not tainted 5.23.0 #1'),
|
|
(OOMAnalyser.KernelConfig_5_8(), 'CPU: 4 PID: 29481 Comm: sed Not tainted 6.12.0 #1'),
|
|
(OOMAnalyser.BaseKernelConfig(), 'CPU: 4 PID: 29481 Comm: sed Not tainted 2.33.0 #1'),
|
|
]:
|
|
oom = OOMAnalyser.OOMEntity(kversion)
|
|
analyser = OOMAnalyser.OOMAnalyser(oom)
|
|
analyser._identify_kernel_version()
|
|
analyser._choose_kernel_config()
|
|
result = analyser.oom_result.kconfig
|
|
self.assertEqual(
|
|
type(result), type(kcfg),
|
|
'Mismatch between expected kernel config "%s" and chosen config "%s" for kernel version "%s"' % (
|
|
type(kcfg), type(result), kversion
|
|
)
|
|
)
|
|
|
|
|
|
if __name__ == "__main__":
|
|
unittest.main(verbosity=2)
|