Introduction to Testing in Go (Golang) from Udemy

What's inside

Learning objectives

Learn how to write unit tests in go
Learn how to write integration tests in go, and simplify them using docker
Learn how to create test suites in go
Learn how to create a simple web application and test handlers, middleware, database, and more

Learn how to create a simple rest api in go and test its endpoints
Learn to to authenticate using jwt tokens (and refresh tokens) and completely test all functionality
Learn how to write tests that cover multiple scenarios with table tests

Learn how to write unit tests in go
Learn how to write integration tests in go, and simplify them using docker
Learn how to create test suites in go
Learn how to create a simple web application and test handlers, middleware, database, and more
Learn how to create a simple rest api in go and test its endpoints
Learn to to authenticate using jwt tokens (and refresh tokens) and completely test all functionality
Learn how to write tests that cover multiple scenarios with table tests

Syllabus

An overview of the course, and a bit about me.

Introduction

About me

Asking for help

Mistakes: we all make them.

Let's get Go and an IDE installed.

What we'll cover in this section

Installing Go

Installing an IDE

Installing Docker

Let's start with something simple: a command line application. We'll learn how to write simple tests, how to test user input, and how to test for information printed to the console.

Creating a simple command line application

Writing a our first test for the isPrime() function

Improving our test with table tests

Checking test coverage

Completing our table tests

Improving our program to allow for user entered information

Writing a test for the prompt() function

Writing a test for the intro() function

Testing user input - writing a test for the checkNumbers() function

Updating readUserInput to make it testable, and then testing it

How to run a single test, a group of tests, or all tests.

Running a single test

Running groups of tests (test suites)

Go is an excellent choice for building web applications. Let's write one, and test every aspect of the final product.

Creating a simple web app

Setting up a route and handler for the home page

Testing our application routes

Testing Handlers: the Home handler

Setting up some simple middleware

Trying out our new addIPToContext middleware

Testing our middleware

Testing ipFromContext

Creating a login form

Setting up a route and stub handler for the login form

Let's write simple validation logic for form submissions, and test them.

Setting up validation logic

Testing validation logic

Completing the tests for our validation logic

Trying out validation with our login form

Web servers are stateless, and we need some way to persist data during a user's visits. Sessions take care of this for us, but how do we test our app when using sessions?

Setting up a test enviroment with testing.M

Simplifying our templates using a layout

Installing a sessions package

Adding session to App config, and creating a SessionManager

Trying out our sessions

Updating our tests

Improving our test for the Home handler

Testing the render function with a bad template

We know how to test handlers that accept a GET request, but what about posted form data? Let's handle that situation.

Installing postgres with Docker

Setting up a database connection

Adding the data package for models and db package for database access

Making sure our web app can connect to our database

Closing our database pool gracefully, and resetting template path in tests

Creating a stub profile page

Adding messages to our template data and template files

Adding true authentication to the Login handler

Testing the Login handler

Adding Auth middleware

Testing Auth middleware

Updating routes & end-to-end tests

Problems with our Login handler test

The repository pattern is a widely used means of making it simple to swap a test database for a live database, which is incredibly useful for testing (and other things). Let's look at it.

Defining an interface type for our repository

Moving our database functions into a repository

Updating application config to use the database repository

Creating a testdb repository

Updating setup_test.go to use the test repository

Updating our tests to use the testdb repository

We want to ensure that our code that interacts with the database will behave as expected, so let's figure out how to spin up a Docker image with Postgres, and write integration tests for our code.

Getting started with testing our database

Getting our tests to spin up a docker image with Postgres

Populating our test database with empty tables

Testing InsertUser

Testing AllUsers

Testing GetUser and GetUserByEmail

Testing UpdateUser

Testing DeleteUser

Testing ResetUserPassword

Testing InsertUserImage

Using build tags to separate our integration tests

Learn how to test file uploads with multipart requests.

Adding a form to the Profile page

Adding the UserImage type to the User type

Updating the profile.page.gohtml file to look for a profile image

Writing a stub handler and a function to process profile image uploads

Implementing the UploadProfilePic handler

Trying things out

Testing image uploads

Testing our upload handler, with an alternative approach

Good to know

Know what's good

, what to watch for

, and possible dealbreakers

Explores modern frameworks and tools for writing tests

Provides the theoretical and practical knowledge to write effective tests in the Go programming language

Offers hands-on experience with building and testing web applications

Delves into the intricacies of authentication using JWT tokens

Includes table tests to improve test coverage

Teaches advanced concepts such as database testing using the Repository pattern

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 Introduction to Testing in Go (Golang) with these activities:

Review previous coursework on testing concepts

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Recalling foundational knowledge will strengthen your understanding and provide a solid base for this course.

Browse courses on Unit Testing

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Go through old textbooks, notes, or online resources
Focus on reviewing basic concepts and principles of testing

Practice writing a variety of unit tests

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Writing unit tests is a crucial aspect of software development and is closely related to concepts covered in this course.

Browse courses on Unit Tests

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Create a simple Go program and write unit tests for each function
Try using different types of assertions to check for various conditions
Experiment with table tests for scenarios with multiple inputs

Contribute to an open-source Go testing project

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Contributing to open source projects allows you to learn from experienced developers and directly impact the community.

Browse courses on Open Source

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Identify an open-source Go testing project to contribute to
Study the project's codebase and documentation
Identify areas where you can make improvements or add features
Create pull requests with your proposed changes
Review feedback from maintainers and revise your pull requests
Attend online or local meetups related to open-source projects

Four other activities

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Read 'Go Testing' by Brad Fitzpatrick

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This book provides in-depth information on unit testing best practices in Go.

View Shooter's Bible Guide to Concealed Carry, 2nd... on Amazon

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Obtain a copy of the book 'Go Testing'
Read and understand the concepts presented in the book
Apply the learnings from the book to your own Go projects

Build a simple web application and test it

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This activity ties directly to the course content and allows you to apply your knowledge to a more practical setting.

Browse courses on Web Applications

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Create a new web application in Go
Implement basic functionality like handling HTTP requests and rendering templates
Write unit and integration tests to ensure the application behaves as expected
Deploy the application to a cloud platform

Write a blog post about unit testing in Go

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Teaching others reinforces your understanding and allows you to think critically about the concepts learned in this course.

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Choose a specific aspect of unit testing in Go to focus on
Research the topic and gather relevant information
Write a clear and concise blog post explaining the topic
Publish the blog post on a platform like Medium or Dev.to
Share the blog post on social media and engage with readers

Develop a code repository that demonstrates your knowledge

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Creating a code repository showcases your skills and allows you to share them with potential employers and collaborators.

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Choose a specific project or set of projects to highlight
Organize your code in a GitHub repository using branches and pull requests
Write clear documentation and provide detailed commit messages
Make your repository publicly available on GitHub
Share your repository on social media and engage with other developers (optional)

Career center

Learners who complete Introduction to Testing in Go (Golang) will develop knowledge and skills that may be useful to these careers:

Quality Assurance Tester

Quality Assurance Testers perform testing activities to ensure that software meets its requirements and user expectations. This course is particularly helpful for aspiring QA testers interested in the field of software testing as it provides a comprehensive introduction to writing effective tests and understanding the principles that underscore software testability.

See salaries and explore the career path for Quality Assurance Tester

Software Developer

Software developers are responsible for designing, developing, and maintaining computer software. This course will help software developers write effective unit and integration tests. Ultimately, this reduces the amount of time and effort required for maintenance and debugging.

See salaries and explore the career path for Software Developer

Test Analyst

Test analysts plan, develop, and execute test plans. They work to ensure that the end user has a positive experience with a software application. As such, this course is a great fit for someone looking to become a test analyst, since it explores a variety of testing methodologies and best practices within the context of writing unit and integration tests in Go.

See salaries and explore the career path for Test Analyst

Database Administrator

Database administrators are responsible for the installation, configuration, maintenance, and performance monitoring of databases. This course will help aspiring database administrators who wish to work with relational databases written in Go.

See salaries and explore the career path for Database Administrator

Web Developer

Web developers are responsible for building and maintaining websites. This course will help web developers who wish to focus on back-end development within web applications, as it teaches the fundamentals of the Go programming language.

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DevOps Engineer

DevOps engineers work to bridge the gap between development and operations teams, enabling faster and more reliable software delivery. This course may be useful for a DevOps engineer who wishes to enhance their testing skills.

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Software Engineer

Software engineers design, develop, and maintain computer software, a vital role for any organization utilizing technological solutions. This course may be useful for a software engineer who seeks to work on back-end development within web applications. Learning how to write tests can lead to more reliable, stable software.

See salaries and explore the career path for Software Engineer

Data Analyst

Data analysts collect, analyze, and interpret data to help organizations make informed decisions. This course may be useful for a data analyst who wishes to improve their data quality by testing for quality assurance prior to analysis.

See salaries and explore the career path for Data Analyst

Security Engineer

Security engineers are responsible for protecting computer systems and networks from unauthorized access and cyberattacks. This course may be useful for a Security engineer who wishes to gain hands-on experience with testing web applications.

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Cloud Architect

Cloud architects design, build, and manage cloud computing solutions. This course may be useful for a cloud architect who wishes to apply testing principles within the domain of cloud computing.

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UX Designer

UX designers are responsible for the user experience of software products. This course may be useful for a UX designer who wishes to gain a better understanding of how software is developed.

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Product Manager

Product managers are responsible for the development and launch of new products. This course may be useful for a product manager who needs to understand how software development can be automated.

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Business Analyst

Business analysts bridge the gap between business and IT, helping to ensure that software meets the needs of the business. This course may be useful for a business analyst who wishes to gain a better understanding of the software development process.

See salaries and explore the career path for Business Analyst

IT Manager

IT managers are responsible for the planning, implementation, and management of IT systems. This course may be useful for an IT manager who wishes to gain a better understanding of software development and testing practices.

See salaries and explore the career path for IT Manager

Technical Writer

Technical writers are responsible for creating documentation for software products. This course may be useful for a technical writer who wishes to gain a better understanding of the software development process.

See salaries and explore the career path for Technical Writer