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Validating Iframe Navigation and History Management in NW.js

This test suite validates iframe navigation and history management in NW.js applications, focusing on proper URL escaping and state preservation. It ensures seamless iframe interactions and page transitions while maintaining application state integrity.

Test Coverage Overview

The test suite provides comprehensive coverage of iframe navigation scenarios in NW.js applications. It verifies:

Navigation between parent and iframe content
Multiple iframe state transitions
URL escaping during navigation
History state preservation across iframe boundaries

Implementation Analysis

The test employs Selenium WebDriver for automated browser interaction, implementing a systematic approach to iframe testing. It utilizes Chrome options for NW.js app configuration and implements explicit waits for reliable element detection across frame transitions.

The testing pattern follows a sequential navigation flow with explicit frame switching and state verification at each step.

Technical Details

Selenium WebDriver with Chrome driver integration
Python test framework with custom utility functions
Frame switching using driver.switch_to.frame
Dynamic element waiting with timeout handling
Custom Chrome options for NW.js app testing

Best Practices Demonstrated

The test implementation showcases robust testing practices for complex browser interactions. It demonstrates:

Proper test cleanup with driver quit in finally block
Explicit waits for reliable element detection
Systematic error handling with timeout mechanisms
Clear test flow organization with descriptive print statements
Modular test utility integration

nwjs/nwJs

test/sanity/issue6136-nwjs-history-escapes-iframe/test.py

            
import time
import os
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)

driver = webdriver.Chrome(executable_path=os.environ['CHROMEDRIVER'], chrome_options=chrome_options)
driver.implicitly_wait(2)
try:
    print(driver.current_url)

    print('Click Next button')
    driver.find_element_by_tag_name('a').click()
    output = wait_for_element_tag(driver, 'h1')
    assert('Second Page' in output)
    assert(driver.find_element_by_tag_name('iframe') is not None)

    print('Switch to iframe')
    driver.switch_to.frame(driver.find_element_by_tag_name('iframe'))
    result1 = wait_for_element_tag(driver, 'h1')
    assert('Iframe index' in result1)

    print('Click Next button in Iframe index page')
    driver.find_element_by_tag_name('a').click()

    print('Switch to second iframe')
    result2 = wait_for_element_tag(driver, 'h1')
    assert('Iframe Second Page' in result2)

    print('waiting for back to iframe page')
    timeout = 4
    while timeout > 0:
        try:
            output = driver.find_element_by_tag_name('h1').get_attribute('innerHTML')
            assert('Iframe Second Page' in output)
            break
        except selenium.common.exceptions.WebDriverException:
            pass
        time.sleep(1)
        timeout = timeout - 1
        if timeout <= 0:
            raise Exception('Timeout when waiting for element')
    print('Return to inframe page')

finally:
    driver.quit()