What will I learn in this course?

Unit testing, mocking, dependency injection, async testing, TDD workflows, API testing, and BDD with Gherkin.

Is this course practical and industry-focused?

Yes. You’ll work on real-world examples, test APIs, handle edge cases, and refactor code using TDD.

Will this course improve my coding skills?

Yes. TDD helps you write cleaner, more modular, and more testable code.

Will this course help my career?

Yes. Skills like unit testing, TDD, and BDD are in high demand for developer and QA roles.

What will I get if I subscribe to this Specialization?

When you enroll in the course, you get access to all of the courses in the Specialization, and you earn a certificate when you complete the work. Your electronic Certificate will be added to your Accomplishments page - from there, you can print your Certificate or add it to your LinkedIn profile.

Is financial aid available?

Yes. In select learning programs, you can apply for financial aid or a scholarship if you can’t afford the enrollment fee. If fin aid or scholarship is available for your learning program selection, you’ll find a link to apply on the description page.

Unit Testing & Test-Driven Development

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Unit Testing & Test-Driven Development

Instructor: Edureka

Included with

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3 modules

Gain insight into a topic and learn the fundamentals.

Beginner level

Recommended experience

6 hours to complete

Flexible schedule

Learn at your own pace

3 modules

Gain insight into a topic and learn the fundamentals.

Beginner level

Recommended experience

6 hours to complete

Flexible schedule

Learn at your own pace

What you'll learn

Write clean, maintainable unit tests using industry-standard structure, naming conventions, and best practices.
Isolate and test code effectively using mocks, test doubles, and dependency injection, including asynchronous and edge-case scenarios.
Design and implement production-ready features using Test-Driven Development (TDD) and the Red–Green–Refactor workflow.
Define and automate behavior-driven tests using BDD and Gherkin to validate complete feature behavior.

Skills you'll gain

Details to know

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See how employees at top companies are mastering in-demand skills

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There are 3 modules in this course

Welcome to Unit Testing & Test-Driven Development, a practical, industry-focused course that teaches you how to build high-quality, reliable, and maintainable software using modern unit testing, Test-Driven Development (TDD), and Behavior-Driven Development (BDD) practices.

In this course, you’ll master the fundamentals of unit testing, including test structure, naming conventions, and maintainable test design. You’ll learn how to isolate code using mocks and test doubles, apply dependency injection for testability, and confidently test asynchronous and event-driven logic. The course then dives deep into TDD workflows, helping you design features using the Red–Green–Refactor cycle and apply TDD in real-world projects such as APIs, services, and error-handling scenarios. Finally, you’ll explore BDD with Gherkin, writing readable scenarios and automating full feature implementations using testing frameworks. By the end of this course, you will be able to: -Understand why unit testing is essential for software reliability and long-term code quality -Write clean, maintainable, and scalable unit tests -Use mocking, test doubles, and dependency injection to isolate code under test -Test asynchronous, edge-case, and time-sensitive logic -Apply Test-Driven Development (TDD) to design and refactor production-ready features -Implement TDD for APIs, services, and error-handling workflows -Write and automate BDD scenarios using Gherkin for clear, behavior-focused testing Through guided demos and hands-on exercises, you’ll build test suites, refactor poorly testable code, develop features using TDD, and automate BDD scenarios end-to-end. These practical activities help bridge the gap between testing theory and real-world software development. This course is ideal for software developers, QA engineers, SDETs, and engineering students who want to improve code reliability, test automation skills, and development confidence. Basic programming knowledge is recommended, but no prior experience with unit testing, TDD, or BDD is required.

In this module, learners will build a strong foundation in unit testing by writing clean, maintainable tests, isolating dependencies using mocks, and confidently testing edge cases and asynchronous code.

What's included

12 videos5 readings4 assignments

12 videos Total 50 minutes

Course Introduction 4 minutes
Introduction to Unit Testing 5 minutes
Test Structure and Naming 5 minutes
Demonstration: Writing Clean and Maintainable Test Cases 4 minutes
Demonstration: Building a Basic Test Suite 3 minutes
Test Doubles and Isolation Concepts 4 minutes
Demonstration: Mocking Dependencies 4 minutes
Demonstration: Dependency Injection for Testing 4 minutes
Demonstration: Refactoring Poorly Testable Code 4 minutes
Parameterized and Edge-Case Testing 4 minutes
Testing Async and Event-Based Logic 5 minutes
Demonstration: Handling Timeouts & Delays in Async Tests 5 minutes

5 readings Total 45 minutes

Welcome to Unit Testing & Test-Driven Development 10 minutes
When a Unit Test Becomes a Liability Instead of an Asset 10 minutes
Designing for Testability: Why Good Tests Start With Good Design 10 minutes
The Illusion of Speed: Why Async Tests Pass Locally but Fail in CI 10 minutes
Summary of Unit Testing Essentials 5 minutes

4 assignments Total 33 minutes

Practice Quiz: Writing Effective Unit Tests 6 minutes
Practice Quiz: Isolation, Mocking and Testability 6 minutes
Practice Quiz: Advanced and Async Testing 6 minutes
Knowledge Check: Unit Testing Essentials 15 minutes

In this module, learners will apply Test-Driven and Behavior-Driven Development practices to real-world scenarios, learning to design features through tests, automate BDD workflows, and improve code reliability using modern testing tools.

What's included

14 videos4 readings4 assignments

14 videos Total 56 minutes

Introduction to TDD 4 minutes
Red-Green-Refactor Overview 5 minutes
Inside-Out and Outside-In TDD 4 minutes
Demonstration: Building a Feature Using TDD 4 minutes
Demonstration: Refactoring Safely With TDD 2 minutes
Integrating TDD Into Dev Workflows 4 minutes
Demonstration: Writing the First TDD Test for a Real Module 3 minutes
Demonstration: TDD for APIs/Services 4 minutes
Demonstration: TDD for Error Handling & Edge Cases 5 minutes
Introduction to BDD 4 minutes
Gherkin Fundamentals 4 minutes
Demonstration: Writing BDD Scenarios 4 minutes
Demonstration: Automating BDD With a Framework 5 minutes
Demonstration: Full BDD Feature Implementation 5 minutes

4 readings Total 35 minutes

Why Test-Driven Development Feels Slow at First and Faster Over Time 10 minutes
Introducing TDD Into an Existing Codebase Without Breaking Everything 10 minutes
Why BDD Is About Communication, Not Just Automation 10 minutes
Summary of TDD, BDD and Test Tooling 5 minutes

4 assignments Total 33 minutes

Practice Quiz: TDD Foundations 6 minutes
Practice Quiz: Applying TDD in Real Projects 6 minutes
Practice Quiz: BDD and Testing Tools 6 minutes
Knowledge Check: TDD, BDD and Test Tooling 15 minutes

In this final module, learners will consolidate key testing concepts through reviews and knowledge checks, complete a graded assignment, and apply testing principles to real-world scenarios with confidence.

What's included

1 video2 assignments

Instructor

Edureka

134 Courses 129,470 learners

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Edureka

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Frequently asked questions

This course teaches unit testing, Test-Driven Development (TDD), and Behavior-Driven Development (BDD) to help you build reliable, maintainable software.

Developers, QA engineers, SDETs, and learners who want to improve code quality and testing skills.

No prior experience is required. The course starts with basics and progresses to advanced testing practices.

To access the course materials, assignments and to earn a Certificate, you will need to purchase the Certificate experience when you enroll in a course. You can try a Free Trial instead, or apply for Financial Aid. The course may offer 'Full Course, No Certificate' instead. This option lets you see all course materials, submit required assessments, and get a final grade. This also means that you will not be able to purchase a Certificate experience.

Unit Testing & Test-Driven Development

Unit Testing & Test-Driven Development

What you'll learn

Skills you'll gain

Details to know

See how employees at top companies are mastering in-demand skills

There are 3 modules in this course

Unit Testing Essentials

What's included

12 videos Total 50 minutes

5 readings Total 45 minutes

4 assignments Total 33 minutes

TDD, BDD and Test Tooling

What's included

14 videos Total 56 minutes

4 readings Total 35 minutes

4 assignments Total 33 minutes

Course Wrap-Up and Assessment

What's included

1 video Total 4 minutes

2 assignments Total 60 minutes

Instructor

Offered by

Why people choose Coursera for their career

Felipe M.

Jennifer J.

Larry W.

Chaitanya A.

Next level skills. New Year savings.

Drive your business forward and empower your teams

Frequently asked questions

More questions

Unit Testing & Test-Driven Development

Unit Testing & Test-Driven Development

What you'll learn

Skills you'll gain

Details to know

See how employees at top companies are mastering in-demand skills

There are 3 modules in this course

Unit Testing Essentials

What's included

TDD, BDD and Test Tooling

What's included

Course Wrap-Up and Assessment

What's included

Instructor

Offered by

Why people choose Coursera for their career

Felipe M.

Jennifer J.

Larry W.

Chaitanya A.

Next level skills. New Year savings.

Drive your business forward and empower your teams

Frequently asked questions

What is this course about?

Who should take this course?

Do I need prior experience with unit testing or TDD?

More questions