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Testing WebView Data Clearing Operations in NW.js

This test suite validates WebView data clearing functionality in NW.js by automating browser interactions using Selenium WebDriver. It sets up a local HTTP server and tests the clearData API through a webview interface.

Test Coverage Overview

The test ensures proper data clearing operations in NW.js WebView components. Key areas covered include:

Multiple consecutive clearData operations
Verification of successful data clearing through UI feedback
Window handle management and switching
Cross-platform server cleanup

Implementation Analysis

The implementation utilizes Selenium WebDriver with Chrome options specifically configured for NW.js WebView testing. The test follows a systematic approach with dynamic port allocation, template-based HTML generation, and proper cleanup procedures.

Key patterns include explicit wait conditions, window handle management, and platform-specific process termination.

Technical Details

Tools and configurations include:

Selenium WebDriver with Chrome driver
Python subprocess for HTTP server management
Dynamic port allocation using Selenium utils
Template-based test page generation
Platform-specific process cleanup (Windows vs Unix)

Best Practices Demonstrated

The test exemplifies robust automation practices including:

Proper resource cleanup in finally blocks
Dynamic configuration through environment variables
Explicit wait conditions for reliable testing
Cross-platform compatibility handling
Modular test setup with template separation

nwjs/nwJs

test/sanity/issue5087-webview-cleardata/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)

svrprog = os.path.abspath(os.path.join(os.path.dirname(testdir), 'http-server-node.py'))

port = str(utils.free_port())
server = subprocess.Popen(['python', svrprog, port])

tpl = open('index.tpl', 'r')
content = tpl.read().replace('{port}', port)
tpl.close()

html = open('index.html', 'w')
html.write(content)
html.close()

driver = webdriver.Chrome(executable_path=os.environ['CHROMEDRIVER'], chrome_options=chrome_options, service_log_path="log", service_args=["--verbose"])
driver.implicitly_wait(5)
try:
    wait_window_handles(driver, 2)
    wait_switch_window_name(driver, 'index')
    print(driver.current_url)
    driver.find_element_by_id('clear').click()
    result = wait_for_element_id_content(driver, 'result', 'success')
    print(result)
    driver.find_element_by_id('clear').click()
    result = wait_for_element_id_content(driver, 'result', 'success')
    print(result)
finally:
    driver.quit()
    import platform
    if platform.system() == 'Windows':
        subprocess.call(['taskkill', '/F', '/T', '/PID', str(server.pid)])
    else:
        server.terminate()