Back to Repositories

Testing Remote File Access Pattern Validation in NW.js

This test suite validates remote file access patterns in NW.js applications using Selenium WebDriver for automated browser testing. It specifically examines URL pattern matching and security restrictions for file access permissions.

Test Coverage Overview

The test suite covers URL pattern matching functionality for file access permissions in NW.js applications.

Key areas tested include:

Universal URL pattern matching (‘all_urls’)
Empty pattern handling
File protocol pattern matching
Non-existent directory pattern validation

Implementation Analysis

The testing approach utilizes Selenium WebDriver with Chrome options to automate browser interactions. It implements a pattern-based testing strategy using a template system to validate different URL access scenarios.

Technical implementation includes:

Dynamic package.json generation from templates
URL path conversion utilities
Automated Chrome driver configuration

Technical Details

Testing tools and configuration:

Selenium WebDriver for browser automation
Chrome driver with custom NW.js app configuration
Python’s urllib for URL handling
Template-based test case generation
Custom utility functions for element waiting and verification

Best Practices Demonstrated

The test implementation showcases several testing best practices including proper test isolation, clear test case organization, and robust cleanup.

Notable practices:

Proper resource cleanup with driver.quit()
Parameterized test patterns
Clear test case documentation
Consistent error handling

nwjs/nwJs

test/sanity/issue7183-node-remote-file/test.py

            
import time
import os
import urllib.parse, urllib.request, urllib.parse, urllib.error
import sys
sys.path.append(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
from nw_util import *

def path2url(path):
        return urllib.parse.urljoin(
                  'file:', urllib.request.pathname2url(path))

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

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

chrome_options = Options()
chrome_options.add_argument("nwapp=" + testdir)

htmlfile = os.path.join(testdir, 'index.html')
localurl = path2url(htmlfile)

tpl = open('package.json.tpl', 'r')
template = tpl.read().replace('{localurl}', localurl)
tpl.close()

def test_pattern(pattern, expect_nw):
    content = template.replace('{pattern}', pattern)

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

    driver = webdriver.Chrome(executable_path=os.environ['CHROMEDRIVER'], chrome_options=chrome_options)
    driver.implicitly_wait(5)
    try:
        print("testing pattern %s, expect nw: %s" % (pattern, expect_nw))
        result = wait_for_element_id_content(driver, 'nw_access', expect_nw)
    finally:
        driver.quit()

test_pattern('"<all_urls>"', 'yes')
test_pattern('', 'no')
test_pattern('"file://*"', 'yes')
test_pattern('"file:///dir/not/exists/*"', 'no')