Software testing is important. It helps to catch bugs early. It also makes software better. You can learn all these things in a Software Testing Training in Delhi.

Unit testing is the first step. It checks small parts of code. There are modern ways to do unit testing. These include TDD, BDD, and Mocking.

Let us learn them one by one.

What is Unit Testing?

Unit testing means testing one small unit of code. It can be a function or a method. It tells you if that unit works well. Unit testing checks individual pieces of code. It ensures they do exactly what they are supposed to do. It makes finding errors easy and quick.

Why is Unit Testing Important?

Reason	Why It Matters
Catches bugs early	You find problems before users do
Easy to fix bugs	Bugs in small units are easier to fix
Improves design	You write clean and simple code

What is TDD?

TDD stands for Test Driven Development. It means writing tests before writing code.

Steps in TDD

Write a test
Run the test. It fails.
Write code to pass the test
Run the test again. It passes.
Repeat for other tests

TDD Example

Step	Action
Test First	You write a test for a function
Code Later	You write the function to pass the test

What is BDD?

BDD stands for Behavior Driven Development. It is like TDD. But it focuses on behavior. It is written in plain English. This helps everyone understand the test.

BDD Format

Role	Format
User Story	Given, When, Then
Example	Given user logs in, When they click, Then they see the dashboard

Where to learn?

Noida is a city near Delhi. It is a hub for tech companies and startups. Many people from around the world work here. The city is known for its great infrastructure and rapid growth. Noida also has many parks and shopping malls. Software Testing in Noida is growing fast with many opportunities. It is a lively and modern place.

What is Mocking?

Mocking is creating fake data or objects. This helps in testing only one part. You do not need to depend on other systems. Mocking makes testing faster and more reliable. It isolates parts of code. This way, you can focus on specific sections and avoid errors from other systems.

Mocking Use Case

Real System	Mock System
Database	Fake database object
API	Fake API response

Mocking saves time. It makes tests run fast.

Tools for Unit Testing

There are many tools to do unit testing.

Tool	Use
JUnit	Testing in Java
Mockito	Mocking in Java
Jasmine	BDD in JavaScript
Mocha	Unit testing in JavaScript
Pytest	Testing in Python

You can learn all these tools in a Software Testing Training in Gurgaon. The city has top institutes, skilled trainers, and great job options. Start your journey toward becoming a software tester here.

TDD vs BDD vs Mocking

Here is a table to compare them.

Feature	TDD	BDD	Mocking
Test First	Yes	Yes	No
Focus	Code correctness	User behavior	Isolated unit testing
Readable by all	No	Yes	No
Needs real system	Sometimes	Sometimes	No

When to Use Which Technique?

Use Case	Best Technique
Small function testing	TDD
Team collaboration	BDD
No access to real systems	Mocking

Conclusion

Modern unit testing is fun. TDD makes you write better code. BDD helps everyone understand tests. Mocking saves time and helps focus on one part. Try them all in your next project. You will build stronger apps, find bugs early, and feel more confident. Keep testing and keep learning always.

Modern Unit Testing with TDD, BDD, and Mocking Techniques

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