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Testing Process.nextTick Error Handling Implementation in NW.js

This test suite validates process.nextTick functionality in NW.js using Selenium WebDriver for browser automation. It focuses on handling asynchronous operations and error conditions in the NW.js runtime environment.

Test Coverage Overview

The test provides coverage for process.nextTick execution and error handling in NW.js applications.

Key areas tested include:

Button click event handling
Asynchronous process.nextTick execution
Error state validation
DOM element content verification

Implementation Analysis

The implementation uses Selenium WebDriver to automate browser interactions and validate application behavior.

Technical patterns include:

Chrome WebDriver configuration with NW.js specific options
XPath-based element selection
Implicit wait handling
DOM content assertion checks

Technical Details

Testing tools and configuration:

Selenium WebDriver for browser automation
Chrome Options for NW.js app configuration
Python test runner environment
Custom nw_util helper functions
Environment-based ChromeDriver path configuration

Best Practices Demonstrated

The test demonstrates robust automation practices for NW.js applications.

Notable practices include:

Proper test cleanup with driver.quit()
Try-finally block for resource management
Explicit element location strategies
Clear assertion conditions
Modular test structure with utility imports

nwjs/nwJs

test/sanity/issue4822-fail-tick/test.py

            
import time
import os
import sys
from selenium.webdriver.common.by import By

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
chrome_options = Options()
chrome_options.add_argument("nwapp=" + os.path.dirname(os.path.abspath(__file__)))

driver = webdriver.Chrome(executable_path=os.environ['CHROMEDRIVER'], chrome_options=chrome_options)
driver.implicitly_wait(5)
try:
    print(driver.current_url)
    driver.find_element(By.XPATH, '//button[text()="fail"]').click()
    driver.find_element(By.XPATH, '//button[text()="process.nextTick"]').click()
    result = driver.find_element_by_id('res1').get_attribute('innerHTML')
    print(result)
    assert("success" in result)
finally:
    driver.quit()