Getting Started – Test Case Creation Guide

Creating effective test cases requires a structured approach that combines a deep understanding of the application with a logical, layered workflow. The following guide outlines how to get started.

1. Familiarize Yourself with the Application

•  Steps to start

2. Identify and Isolate Layers of Functionality

• Approach

3. Create a Logical Breakdown and Journey

• Example Test Case Structure: YouTube Video Streaming Layer
• Useful Steps to Structure Test Cases

1. Familiarize Yourself with the Application

Even if your test case creation is limited to a few scenarios, it’s important to explore the entire application.

Why: Many apps have interconnected features or settings (e.g., region-specific functionality or UI changes) that may impact even narrowly scoped test cases.

 Steps to start:

• Interact with every button and feature in the app.

• Change every setting to observe its impact.

• Explore all sections to identify dependent behaviors.

• Treat this as a full exploratory session—don’t limit yourself to obvious features.

• Understand the app’s workflows and dependencies for better test case design.

💡 Tip: Hidden functionalities or side effects can lead to unexpected issues, so thorough exploration is essential.

2. Identify and Isolate Layers of Functionality

Applications often consist of multiple interconnected layers. Understanding these layers helps design comprehensive test cases.

Example: YouTube

• Core layer: Video streaming (accessible to all users, logged in or not).

• Secondary layer: Account-based features like “Watch Later,” Likes, Playlist creation (requires login).

Other examples:

• Free vs. Paid users: Extra features unlocked with a paid plan.

• Region-specific features: Certain options available only to users in specific countries.

• Conditional features: Any system where one subsystem or user setting affects another.

Approach:

1. Identify base functionalities: Core features largely unaffected by user status or settings.

2. Identify secondary/tertiary layers: Features influenced by account status, subscription, or region.

3. Group layers by interactions if significance is unclear. For example, a theme change may not affect core functionality but can impact UI alignment.

💡 Tip: Test across all combinations of variables (account type, region, theme, etc.) to ensure thorough coverage.

3. Create a Logical Breakdown and Journey

Once familiar with the app and its layers:

1. Organize your notes into a smooth, logical sequence to minimize backtracking.

2. Start with high-level core changes, then progress to detailed scenarios., using YouTube’s video streaming functionality, a suggested test case structure might look like this:

Example Test Case Structure: YouTube Video Streaming Layer

1. Access YouTube without an active account

   • Verify basic video streaming functionality:

     • Videos can be played without any issues.

     • All basic playback options (resolution, speed, volume, closed captions) work as intended.

   • Verify advanced video features are unavailable:

     • Features such as "Watch Later," "Likes," and "Playlist Creation" are not accessible.

2. Log in to a valid YouTube account

   • Recheck basic video streaming functionality:

     • Videos can still be played without issues (repeat basic playback checks from step 1).

     • Playback options (resolution, speed, volume, closed captions) still work as intended.

   • Verify advanced video features are available:

     • Features such as "Watch Later," "Likes," and "Playlist Creation" are now accessible to the user.

   • Test advanced feature functionality:

     • Confirm that each advanced feature (e.g., adding a video to "Watch Later," liking a video, creating a playlist) works without issues.

💡 Tips:

• For each scenario, note both positive and negative expected behaviors (e.g., confirming access, or lack thereof, to certain features depending on account status).

• You can further refine by repeating these checks for other account types (e.g., Premium or region-locked accounts), or under different settings (e.g., with parental controls enabled).

Useful Steps to Structure Test Cases

Cluster changes episodically:

• Base Change 1 – Not logged in:

  • Check secondary layers (feature access, personalization)

  • Check tertiary layers (UI elements, notifications)

  • Modify secondary layers and recheck for changes/regressions

  • Re-check tertiary layers for indirect effects

• Base Change 2 – Logged in:

  • Repeat above steps, noting differences or new functionalities

If no clear layer structure:

• Group changes logically by interactions or feature sets.

💡 Tips:

• This approach ensures comprehensive coverage and minimizes backtracking.

• Always document unexpected interactions or effects during each “episode” or layer.

Curious about the formatting? Read this article here for more insights.