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Testing Web Worker Module Communications in NW.js

This test suite validates Web Worker module functionality in NW.js, focusing on proper initialization and message handling between the main thread and worker modules. The test ensures consistent behavior of worker module communications and state management.

Test Coverage Overview

The test suite provides comprehensive coverage of Web Worker module integration in NW.js applications.

Key areas tested include:

Worker module initialization and loading
Message passing between main thread and worker
Multiple worker invocations
Content verification through DOM element updates

Implementation Analysis

The testing approach utilizes Selenium WebDriver for browser automation and interaction simulation. The implementation follows a sequential pattern of worker initialization, message dispatch, and response validation through DOM element content verification.

Technical implementation features:

Chrome WebDriver integration
Native module support
Automated UI interaction
Asynchronous operation handling

Technical Details

Testing tools and configuration:

Selenium WebDriver for browser automation
Chrome Options for NW.js app configuration
Custom utility functions for element waiting
Native module installation support
Platform-independent path handling
Environment variable integration for ChromeDriver

Best Practices Demonstrated

The test demonstrates robust quality assurance practices for Web Worker module testing.

Notable practices include:

Proper test cleanup and resource management
Explicit wait conditions for async operations
Error handling through try-finally blocks
Modular test structure with utility function separation
Cross-platform compatibility considerations

nwjs/nwJs

test/sanity/issue7239-worker-module/test.py

            
import time
import os
import shutil
import subprocess
import platform
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
chrome_options = Options()
testdir = os.path.dirname(os.path.abspath(__file__))
chrome_options.add_argument("nwapp=" + testdir)

os.chdir(testdir)

install_native_modules()

driver = webdriver.Chrome(executable_path=os.environ['CHROMEDRIVER'], chrome_options=chrome_options)
try:
    print(driver.current_url)
    driver.find_element_by_tag_name('button').click()
    wait_for_element_id_content(driver, 'result', '456')
    time.sleep(1)
    driver.find_element_by_tag_name('button').click()
    wait_for_element_id_content(driver, 'result', '456')
finally:
    driver.quit()