Java Selenium Framework – Module 04d (Widgets: Slider Validation)

In this video, I demonstrate advanced Selenium automation test design using Java + TestNG on the DemoQA Widgets – Slider component.

This module focuses on dynamic UI validation, negative testing, and state-dependent test execution, which are common challenges in real-world automation frameworks.

🔹 Test Scenarios Covered
✅ Test Case 2: Verify Slider Value Updates Correctly (25)

Adjust the slider to 25

Validate that the textbox (sliderValue) updates correctly

Demonstrates basic UI interaction and positive validation

❌ Test Case 3: Verify Slider Validation Fails When Expected Value Is Incorrect

Slider is adjusted to 75

Assertion is intentionally written with an incorrect expected value

Test is expected to FAIL

Demonstrates negative testing and proper failure reporting

✅ Test Case 4: Verify Slider Value Updates Correctly from 35 to 75

Slider is first set to 35

Value is deliberately read and validated as a precondition

Slider is then adjusted dynamically to 75

Textbox value is re-read and validated

Test is expected to PASS

Demonstrates:

Dynamic value re-reading

State-dependent execution

Proper sequencing using dependsOnMethods

Avoidance of stale element issues
🔹 Key Automation Concepts Demonstrated

Java + Selenium WebDriver

TestNG test dependency management

Dynamic UI value validation

Negative vs positive test design

Handling stale elements and UI state

JavaScriptExecutor for complex UI controls

Regression-safe test structuring

Extent Report logging with screenshots

🔹 Why This Matters

This module reflects real production automation challenges, where:

UI state matters

Tests can affect one another

Incorrect assertions must fail predictably

Automation must handle non-standard UI components

The focus is not just on making tests pass, but on designing resilient, meaningful test cases.

🔹 Tech Stack

Java 21

Selenium WebDriver

TestNG

Extent Reports

DemoQA Test Application

📌 This video is part of a larger Java Selenium automation framework series, designed to simulate enterprise-level testing scenarios rather than simple demo scripts.

If you’re learning Selenium seriously, this module shows how real automation frameworks are built and validated.

Видео Java Selenium Framework – Module 04d (Widgets: Slider Validation) канала Kevin Tan