How to Write Test Cases (With Examples)
- Osarobo Aiguobarueghian
- May 15
- 2 min read
One of the most important skills in manual testing is writing clear and effective test cases.
Good test cases help you:
Test systematically
Avoid missing scenarios
Communicate clearly with your team
👉 If you're new to QA, start here first: Complete Guide to Manual Testing (With Real Examples)
What is a Test Case?
A test case is a set of steps used to verify if a feature works correctly.
It usually includes:
Test case ID
Description
Steps
Expected result
Actual result
Structure of a Good Test Case
Example Format:
Field | Description |
Test Case ID | TC_001 |
Title | Login with valid credentials |
Steps | Enter email → Enter password → Click login |
Expected Result | User is logged in successfully |
Actual Result | (Filled after execution) |
Example 1: Login Feature
Test Case:
Enter valid email and password
Click login
Expected Result: User is redirected to dashboard
Example 2: Invalid Password
Test Case:
Enter correct email
Enter wrong password
Click login
Expected Result: Error message: “Invalid credentials”
Example 3: Empty Fields
Test Case:
Leave email and password empty
Click login
Expected Result: Validation message displayed
Tips for Writing Better Test Cases
Be clear and specific
Keep steps simple
Think of edge cases
Write from a user perspective
Common Mistakes
Writing vague steps
Skipping expected results
Not covering negative scenarios
How This Fits Into Manual Testing
Writing test cases is a core part of manual testing.
It connects directly with:
Test execution
Bug reporting
Testing strategy
👉 For the full picture: Complete Guide to Manual Testing (With Real Examples)
Conclusion
Test cases are not just documentation.
They are:
Your thinking process
Your testing structure
Your communication tool
Master this, and you’re already ahead of most beginners.
Ready to start your QA career? Download our free QA Roadmap to get a clear step-by-step guide.
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