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Testing VM Crash Handling Integration in NW.js

This test suite validates VM crash handling in NW.js using Selenium WebDriver integration. It focuses on verifying proper behavior when executing JavaScript code in the VM context, ensuring stability and proper error handling.

Test Coverage Overview

The test provides essential coverage for VM-related crash scenarios in NW.js applications. It specifically targets the issue #4018 related to VM stability.

Tests VM execution stability
Verifies proper crash handling
Validates WebDriver integration
Checks element state management

Implementation Analysis

The implementation leverages Selenium WebDriver with Chrome options for automated testing. It utilizes a custom page load strategy and specific Chrome configurations to create an isolated test environment.

Custom Chrome options configuration
WebDriver session management
Element wait mechanisms
Assertion-based validation

Technical Details

Selenium WebDriver for browser automation
Chrome Options for NW.js app configuration
Custom page load strategy settings
Environment-specific ChromeDriver path
Directory path management utilities
Custom wait_for_element_id utility

Best Practices Demonstrated

The test demonstrates robust automation practices with proper resource cleanup and error handling. It implements proper setup/teardown patterns and uses explicit waits for reliable testing.

Proper driver cleanup in finally block
Explicit wait patterns
Environment configuration management
Isolated test environment setup

nwjs/nwJs

test/sanity/issue4018-vm-crash/test.py

            
import time
import os
import subprocess
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__)))

capabilities = {"pageLoadStrategy": "none"}

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

driver = webdriver.Chrome(executable_path=os.environ['CHROMEDRIVER'], chrome_options=chrome_options, desired_capabilities = capabilities)
try:
    result = wait_for_element_id(driver, 'ret')
    print('result=' + result)
    assert("success" in result)
finally:
    driver.quit()