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Testing Worker Crash Recovery Implementation in NW.js

This test suite validates worker crash handling in NW.js using Selenium WebDriver integration. It focuses on verifying the stability of web workers and proper crash recovery mechanisms in the NW.js runtime environment.

Test Coverage Overview

The test coverage encompasses worker crash scenarios and recovery mechanisms in NW.js applications.

Validates web worker stability under Chrome runtime
Tests crash recovery and cleanup processes
Verifies proper window state management
Ensures WebDriver integration functionality

Implementation Analysis

The implementation utilizes Selenium WebDriver with Chrome options to create a controlled testing environment. The test leverages Python’s system utilities and custom NW.js utility functions to manage the application state and verify worker behavior.

Custom Chrome options configuration
Webview window type specification
Implicit wait handling
Element content verification

Technical Details

Selenium WebDriver for browser automation
Chrome Options for NW.js app configuration
Python sys and os modules for path management
Custom nw_util helper functions
ChromeDriver with verbose logging
Implicit wait timeout of 5 seconds

Best Practices Demonstrated

The test implementation showcases robust error handling and resource cleanup practices.

Proper test environment setup and teardown
Try-finally block for driver cleanup
Explicit path management
Standardized assertion patterns
Comprehensive logging configuration

nwjs/nwJs

test/sanity/issue7450-worker-crash/test.py

            
import time
import os
import sys
sys.path.append(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
from nw_util import *

from selenium import webdriver
from selenium.webdriver.chrome.options import Options
from selenium.webdriver.common import utils

chrome_options = Options()
chrome_options.add_argument("nwapp=" + os.path.dirname(os.path.abspath(__file__)))
chrome_options.add_experimental_option("windowTypes", ["webview"])

testdir = os.path.dirname(os.path.abspath(__file__))
os.chdir(testdir)

driver = webdriver.Chrome(executable_path=os.environ['CHROMEDRIVER'], chrome_options=chrome_options, service_log_path="log", service_args=["--verbose"])
driver.implicitly_wait(5)
try:
    print(driver.current_url)
    result = wait_for_element_id_content(driver, 'result', 'success')
    print('result: %s' % result)
    assert('success' in result)
finally:
    driver.quit()