Finding Bugs in Software Testing: A Beginner's Guide

What Is a Bug in Software Testing?

When we use an application, we expect everything to work correctly. But sometimes, the application behaves differently from what we expect.

This problem is called a bug.

What is a Bug?

A bug is an error or defect in software that causes the application to produce an incorrect or unexpected result.

Simple Example

Imagine a login page:

• Username: adhi
• Password: 12345

You enter the correct username and password, but the application says "Invalid Password".

This is a bug because the application is not working as expected.

How Do Testers Find Bugs?

Software testers check an application by trying different scenarios.

For example:

1. Enter valid username and password.
2. Enter an incorrect password.
3. Leave the username empty.
4. Leave the password empty.
5. Enter special characters.
6. Try very long input.

If the application behaves incorrectly in any of these cases, the tester can report it as a bug.

Basic Bug Life Cycle

A bug usually goes through these stages:

New → Assigned → Open → Fixed → Retest → Closed

Sometimes, a bug can also be Reopened if the problem still exists after the developer fixes it.

Why Are Bugs Important?

Finding bugs early helps to:

• Improve software quality
• Provide a better user experience
• Reduce development costs
• Prevent serious problems after release

Conclusion

Bugs are a normal part of software development. The job of a tester is to find these problems, report them clearly, and make sure they are fixed.