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Testing Chrome DevTools Object Inspection Workflow in NW.js

This test suite validates the Chrome DevTools integration in NW.js, specifically focusing on the inspection functionality and crash prevention. It ensures robust handling of object inspection operations in the developer console while maintaining application stability.

Test Coverage Overview

The test coverage encompasses critical DevTools interaction scenarios and crash prevention mechanisms.

Tests Chrome DevTools console object inspection
Validates window handle management
Verifies proper DevTools panel switching
Tests console input handling
Ensures stable object expansion behavior

Implementation Analysis

The implementation utilizes Selenium WebDriver for automated DevTools interaction testing. The approach systematically validates each step of the DevTools workflow, from initialization to object inspection.

Chrome options configuration for NW.js app testing
Window handle management and switching logic
Console interaction automation
Asynchronous operation handling with wait states

Technical Details

Selenium WebDriver for browser automation
Chrome Options for NW.js app configuration
Custom utility functions for DevTools interaction
CSS selectors for element identification
Implicit and explicit wait mechanisms
Exception handling for cleanup

Best Practices Demonstrated

The test implementation showcases robust automation practices for DevTools testing.

Proper test cleanup with driver quit
Structured wait mechanisms for UI synchronization
Modular utility function usage
Clear step-by-step validation flow
Effective error handling and resource management

nwjs/nwJs

test/sanity/issue3835-inspect-crash/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

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(2)
try:
    switch_to_app(driver)
    print(driver.current_url)
    print('wait for devtools open')
    wait_window_handles(driver, 2)
    print(driver.window_handles)
    print('switch to devtools')
    switch_to_devtools(driver)
    print('click Console panel')
    devtools_click_tab(driver, 'console')
    wait_for_element_id(driver, 'console-prompt')
    print('send_keys "chrome<enter>"')
    devtools_type_in_console(driver, 'chrome\n')
    time.sleep(2)
    driver.execute_script('document.querySelector(".console-object-preview").click()')
    time.sleep(1) # wait for crash!
    expanded = driver.find_element_by_css_selector('.console-view-object-properties-section.expanded')
    assert(expanded is not None)
finally:
    driver.quit()