Unit Testing for C# Developers from Udemy

Picture this: you make a simple change to the code and suddenly realize that you created a dozen unexpected bugs. Sound familiar? You’re not alone.

Good news is, unit testing can make this a thing of the past.

Maybe you’ve heard of automated or unit testing before and you’re keen to learn more.

Or perhaps you’ve tried to learn it and got a bit lost or ended up with fat and fragile tests that got in the way and slowed you down.

Either way, what you need is a course that will teach you all you need to know about this essential skill - from the basics, right through to mastery level.

What is unit testing?

In a nutshell: it’s the practice of writing code to test your code and then run those tests in an automated fashion.

Why learn unit testing?

Why write extra code? Wouldn’t that take extra time to write? Would that slow you down? Why not just run the application and test it like an end user?

Thinking like this is the mistake lots of people make. I used to make it myself. I’ve had to learn the hard way.

I learned pretty fast that if you’re building a complex application or working on a legacy app, manually testing all the various functions is tedious and takes a significant amount of time.

As your application grows, the cost of manual testing grows exponentially. And you’re never 100% sure if you’ve fully tested all the edge cases. You’re never confident that your code really works until you release your software and get a call from your boss or an end user.

Several studies have shown that the later a bug is caught in the software development lifecycle, the more costly it is to the business.

Automated tests help you to catch bugs earlier in the software development lifecycle, right when you’re coding. These tests are repeatable. Write them once and run them over and over.

The benefits of using unit tests are:

help you to catch and fix bugs earlier, before releasing your app into production
help you to write better code with less bugs
help you to produce software with better design - extensible and loosely-coupled
give you rapid feedback and tell you if your code *really* works
force you to think of edge cases that you didn’t realize existed
test your code much faster
tell if you have broken any functionality as you write new code
allow you to refactor your code with confidence
act as documentation about what your code does
save you both time and money

A valuable skill for senior developers

More and more companies are recognizing the advantages of automated testing, that’s why it’s a must-have for senior coders. If you’re looking to reach the higher levels in your coding career, this course can help.

You don’t need any prior knowledge of automated testing. You only need 3 months of experience programming in C#.

With this course you’ll learn:

senior coder secrets - best practices to write great unit tests
tips and tricks to keep your tests clean, trustworthy and maintainable
the pitfalls to avoid – anti-patterns
how to refactor legacy, untestable code into loosely-coupled and testable code
all about dependency injection – the one thing every coder needs to know
the power of mocks – when and how to use them and when to avoid

You’ll get:

6 hours of HD video
tutorials and guidance from a senior coder with 15+ years’ experience
exercises with step-by-step solution
downloadable source code
lifetime access
access online or offline at any time on any device
certificate of completion to present to your current or prospective employer

What's inside

Learning objectives

Learn unit testing from scratch
Tips and tricks to write clean, maintainable and trustworthy tests
Write loosely-coupled and testable code
Refactor legacy code towards testable code

Understand and implement dependency injection
Use mocks to isolate code from external dependencies
Apply the unit testing best practices
Learn the anti-patterns to avoid

Learn unit testing from scratch
Tips and tricks to write clean, maintainable and trustworthy tests
Write loosely-coupled and testable code
Refactor legacy code towards testable code
Understand and implement dependency injection
Use mocks to isolate code from external dependencies
Apply the unit testing best practices
Learn the anti-patterns to avoid

Syllabus

Getting Started

What is Automated Testing

Benefits of Automated Testing

Types of Tests

Test Pyramid

The Tooling

Source Code

Writing Your First Unit Test

Testing All the Execution Tests

Refactoring with Confidence

Using NUnit in Visual Studio

What is Test-Driven Development

Course Structure

Summary

Asking Questions

Fundamentals of Unit Testing

Introduction

Characteristics of Good Unit Tests

What to Test and What Not to Test

Naming and Organizing Tests

Introducing Rider

Writing a Simple Unit Test

Black-box Testing

Set Up and Tear Down

Parameterized Tests

Ignoring Tests

Writing Trustworthy Tests

Developers Who Don't Write Tests

Core Unit Testing Techniques

Testing Strings

Testing Arrays and Collections

Testing the Return Type of Methods

Testing Void Methods

Testing Methods that Throw Exceptions

Testing Methods that Raise an Event

Testing Private Methods

Code Coverage

Testing in the Real-world

Exercises

19- Exercise- FizzBuzz

20- Solution- FizzBuzz

Exercise- DemeritPointsCalculator

Solution- DemeritPointsCalculator

Exercise- Stack

Solution- Stack

Breaking External Dependencies

Loosely-coupled and Testable Code

Refactoring Towards a Loosely-coupled Design

Dependency Injection via Method Parameters

Dependency Injection via Properties

Dependency Injection via Constructor

Dependency Injection Frameworks

Mocking Frameworks

Creating Mock Objects Using Moq

State-based vs. Interaction Testing

Testing the Interaction Between Two Objects

Fake as Little As Possible

An Example of a Mock Abuse

Who Should Write Tests

Exercise- VideoService

Refactoring

Testing

Exercise- InstallerHelper

Refactoring InstallerHelper

Testing InstallerHelper

Exercise- EmployeeHelper

Refactoring EmployeeController

Testing EmployeeController

Project- Testing BookingHelper

Test Cases

Extracting IBooking Repository

Writing the First Test

Writing the Second Test

Fixing a Bug

Writing Additional Tests

Project- HouseKeeperHelper

Refactoring For Testability

Fixing a Design Issue

An Alternative Solution

Writing the First Interaction Test

Keeping Tests Clean

Testing a Method is Not Called

Another Interaction Test

Extracting Helper Methods

Testing Exceptions

Coupons to My Other Courses

Good to know

Know what's good

, what to watch for

, and possible dealbreakers

Builds a strong foundation for beginners who are looking to learn Unit Testing from scratch

Provides tips and tricks to write clean, maintainable, and trustworthy tests

Develops professional skills or deep expertise in Unit Testing

Taught by Mosh Hamedani, who is recognized for his work in programming

Provides exercises with step-by-step solutions to help learners practice

Offers lifetime access, allowing learners to revisit the course materials at their convenience and pace

Reviews summary

Well-received c# unit testing course

According to students, this course is well received and is great for learning about unit testing for C# developers. The course covers the NUnit and Moq frameworks. Students report that this course was very helpful and that the instructor, Mosh Hamedani, is knowledgeable. Students also appreciate that this course is self-paced and affordable.

Self-paced and affordable

"This course is self-paced and affordable."

Covers NUnit and Moq frameworks

"The course covers the NUnit and Moq frameworks."

Knowledgeable instructor

"Mosh Hamedani is a knowledgeable instructor."

Activities

Be better prepared before your course. Deepen your understanding during and after it. Supplement your coursework and achieve mastery of the topics covered in Unit Testing for C# Developers with these activities:

Review Fundamentals

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Review basic automated testing principles to refresh and strengthen your knowledge foundation.

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Revisit the course description and learning objectives for this course.
Familiarize yourself with the terminology of automated testing and unit testing.
Review the benefits and advantages of using automated testing.

Write Unit Tests for Simple Functions

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Practice writing basic unit tests to gain hands-on experience.

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Choose a simple function from the course materials or find one online.
Write unit tests that cover various scenarios and edge cases.
Run the tests and debug any failures.

Participate in a Peer Review Session

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Engage with other students and provide feedback on unit testing practices and techniques.

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Find a study group or online forum.
Share your unit test code and best practices with the group.
Provide constructive feedback and learn from others.

Four other activities

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Show all seven activities

Follow Tutorials on Test-Driven Development

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Explore test-driven development principles and techniques through guided tutorials.

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Find online tutorials or courses on test-driven development.
Follow the tutorials and apply the principles to your own projects.
Seek guidance from experts or experienced developers if needed.

Read 'Working Effectively with Legacy Code'

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Gain insights into techniques for working with and refactoring legacy code to improve its testability and maintainability.

View Brutal Refactoring on Amazon

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Obtain a copy of the book.
Read and study the chapters on refactoring and unit testing.
Apply the techniques to your own projects or legacy codebase.

Develop a Unit Testing Framework for a New Project

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Apply your knowledge by creating a unit testing framework for a new project to ensure testability from the start.

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Design a testing framework that meets the requirements of your project.
Implement the framework using appropriate testing libraries and tools.
Document and share the framework with your team or the community.

Write a Blog Post on Unit Testing Best Practices

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Share your knowledge and insights by summarizing best practices and techniques for effective unit testing.

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Review the course materials and research best practices for unit testing.
Organize your thoughts and outline the key points.
Write a well-structured blog post that clearly explains the best practices.

Career center

Learners who complete Unit Testing for C# Developers will develop knowledge and skills that may be useful to these careers:

Software Developer

Software Developers write code to create products and services. These applications can be used on computers, phones, and other devices. Software Developers are in high demand as businesses increasingly rely on technology. This course can help you get started in a career as a Software Developer by teaching you the basics of unit testing in C#. Unit testing is an essential skill for Software Developers as it helps to ensure that code is working as intended. This course will give you the skills you need to succeed in this role.

See salaries and explore the career path for Software Developer

Test Engineer

Test Engineers design and execute tests to ensure that software meets customer requirements. They work on a variety of projects, from small personal apps to large enterprise systems. Test Engineers are in high demand as businesses increasingly rely on technology. This course can help you get started in a career as a Test Engineer by teaching you the basics of unit testing in C#. Unit testing is an essential skill for Test Engineers as it helps to ensure that code is working as intended. This course will give you the skills you need to succeed in this role.

See salaries and explore the career path for Test Engineer

Software Engineer

Software Engineers design, develop, and maintain software systems. They work on a variety of projects, from small personal apps to large enterprise systems. Software Engineers are in high demand as businesses increasingly rely on technology. This course can help you get started in a career as a Software Engineer by teaching you the basics of unit testing in C#. Unit testing is an essential skill for Software Engineers as it helps to ensure that code is working as intended. This course will give you the skills you need to succeed in this role.

See salaries and explore the career path for Software Engineer

Quality Assurance Analyst

Quality Assurance Analysts work to ensure that software is of high quality and meets customer requirements. They work on a variety of projects, from small personal apps to large enterprise systems. Quality Assurance Analysts are in high demand as businesses increasingly rely on technology. This course can help you get started in a career as a Quality Assurance Analyst by teaching you the basics of unit testing in C#. Unit testing is an essential skill for Quality Assurance Analysts as it helps to ensure that code is working as intended. This course will give you the skills you need to succeed in this role.

See salaries and explore the career path for Quality Assurance Analyst

Software Tester

Software Testers test software to find bugs and ensure that it is working as intended. They work on a variety of projects, from small personal apps to large enterprise systems. Software Testers are in high demand as businesses increasingly rely on technology. This course can help you get started in a career as a Software Tester by teaching you the basics of unit testing in C#. Unit testing is an essential skill for Software Testers as it helps to ensure that code is working as intended. This course will give you the skills you need to succeed in this role.

See salaries and explore the career path for Software Tester

Computer Programmer

Computer Programmers write code to create software applications. They work on a variety of projects, from small personal apps to large enterprise systems. Computer Programmers are in high demand as businesses increasingly rely on technology. This course can help you get started in a career as a Computer Programmer by teaching you the basics of unit testing in C#. Unit testing is an essential skill for Computer Programmers as it helps to ensure that code is working as intended. This course will give you the skills you need to succeed in this role.

See salaries and explore the career path for Computer Programmer

Software Architect

Software Architects design and develop the architecture of software systems. They work on a variety of projects, from small personal apps to large enterprise systems. Software Architects are in high demand as businesses increasingly rely on technology. This course can help you get started in a career as a Software Architect by teaching you the basics of unit testing in C#. Unit testing is an essential skill for Software Architects as it helps to ensure that code is working as intended. This course will give you the skills you need to succeed in this role.

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Computer Scientist

Computer Scientists研究计算机科学的基本原理。他们开发新技术和算法，以解决实际问题。 Computer Scientists are in high demand as businesses increasingly rely on technology. This course can help you get started in a career as a Computer Scientist by teaching you the basics of unit testing in C#. Unit testing is an essential skill for Computer Scientists as it helps to ensure that code is working as intended. This course will give you the skills you need to succeed in this role.

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Technical Writer

Technical Writers create documentation that explains how to use software and other technical products. They work on a variety of projects, from small personal apps to large enterprise systems. Technical Writers are in high demand as businesses increasingly rely on technology. This course can help you get started in a career as a Technical Writer by teaching you the basics of unit testing in C#. Unit testing is an essential skill for Technical Writers as it helps to ensure that code is working as intended. This course will give you the skills you need to succeed in this role.

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Project Manager

Project Managers are responsible for planning and executing projects. They work on a variety of projects, from small personal apps to large enterprise systems. Project Managers are in high demand as businesses increasingly rely on technology. This course may be useful for Project Managers as it can help them to understand the technical aspects of software development. This understanding can be helpful in managing software development projects.

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Systems Analyst

Systems Analysts design and implement computer systems. They work on a variety of projects, from small personal apps to large enterprise systems. Systems Analysts are in high demand as businesses increasingly rely on technology. This course may be useful for Systems Analysts as it can help them to understand the technical aspects of software development. This understanding can be helpful in designing and implementing computer systems.

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Product Manager

Product Managers are responsible for the development and launch of new products. They work on a variety of projects, from small personal apps to large enterprise systems. Product Managers are in high demand as businesses increasingly rely on technology. This course may be useful for Product Managers as it can help them to understand the technical aspects of software development. This understanding can be helpful in making decisions about product features and functionality.

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Web Developer

Web Developers design and develop websites. They work on a variety of projects, from small personal websites to large enterprise websites. Web Developers are in high demand as businesses increasingly rely on the internet to reach customers. This course may be useful for Web Developers as it can help them to understand the technical aspects of web development. This understanding can be helpful in designing and developing websites.

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Database Administrator

Database Administrators manage and maintain databases. They work on a variety of projects, from small personal apps to large enterprise systems. Database Administrators are in high demand as businesses increasingly rely on data to make decisions. This course may be useful for Database Administrators as it can help them to understand the technical aspects of database management. This understanding can be helpful in managing and maintaining databases.

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Data Analyst

Data Analysts collect, analyze, and interpret data to help businesses make informed decisions. They work on a variety of projects, from small personal apps to large enterprise systems. Data Analysts are in high demand as businesses increasingly rely on data to make decisions. This course may be useful for Data Analysts as it can help them to understand the technical aspects of data analysis. This understanding can be helpful in collecting, analyzing, and interpreting data.

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Business Analyst

Business Analysts work with businesses to identify and solve problems. They work on a variety of projects, from small personal apps to large enterprise systems. Business Analysts are in high demand as businesses increasingly rely on technology to solve problems. This course may be useful for Business Analysts as it can help them to understand the technical aspects of software development. This understanding can be helpful in working with businesses to identify and solve problems.

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