Golang Database Unit Testing, Currently I just have a helper
Golang Database Unit Testing, Currently I just have a helper function to create the test database, this function ensures to drop tables and populate the seed data against I'm going to test, so in this case I get a fresh new database. unit tests, regression tests, integration tests, security tests, etc. It demonstrates best practices for structuring your codebase to facilitate testing and includes examples of unit tests using the standard testing package. Easily Run your Unit Test with GoLang + Gin + Postgres GoLang pointers makes it easy for us to mock objects! We all know writing a unit test that actually hits any database is not writing a unit test, but many Tagged with go, database, testing. We are using go’s native testing package and assert library for unit testing. First of all, you should check that the database is clean and ready to receive the required data. In todays brief kata I wanted to share my views on how fixtures for unit tests must be managed. Software testing is a process used to identify the correctness, completeness, and quality of developed computer software. T) { // Setup Fiber app app := fiber. Golang is known for its simplicity… Testing is a crucial aspect of software development, ensuring that your code behaves as expected. However, I don't seem to be performing the dependency injection correctly in my unit testing environment. Golang Mocking SQL Connection in Unit Tests with sqlmock — A Practical Guide Unit testing database-related functions can be tricky, as you don’t want to rely on an actual database to run your … Learn unit testing in Go with real-world examples. In the second part, you will learn how to build a set of RESTful HTTP APIs using Gin - one of the most popular Golang frameworks for building web services. Learn how to write Go unit test code and run it using the "go test" command. If your Golang app uses a MySQL-compatible database, you will have a lot of database-related code to unit test. Golang has a built-in testing…. Feb 23, 2024 · Another obstacle when testing a function that calls an external entities such as a database is that, the database might be out of service and we cannot assert our unit test as well. The simplest example of the test case that includes a database in it is some web server that returns a record data by its id. We are going to write our first service in Golang and want to know what is the viewed as the best practice by the Go community to test business and handlers code relying on a database. This application persists its data to a SQLite database. go file to set up my mock database environment. In this tutorial, you will create a small program and then run a series of tests on your code using Go’s testing package and the go test command. Besides the database, you will also learn how to use docker for local development, how to use Git to manage your codes, and how to use Github Action to run unit tests automatically. Let’s assume that you’ve started writing a standard reading list application that keeps track of books that you want to read or have read and their authors. I'm new in Go and unit test. Covers table-driven tests, mocking, HTTP handlers, and best practices to write reliable Go code. Unit tests A unit test is a low-level Highly experienced Golang Developer with extensive knowledge in the Information Technology (IT) field. Effective unit testing helps improve code quality, catch bugs early, and increase maintainability. Recently, I found a wonderful library, which will simplify writing tests and mocking database queries in golang applications a lot. In most cases faster than containers, but still the article is very interesting. } } Conclusion Testing with GORM in Golang elevates the quality of our code by ensuring that our database interactions and models meet the desired specifications. At LTV, our Engineering team cares about testing our code as we write it. Jika pada artikel sebelumnya kita membahas pembuatan unit test + mocking technique dalam level handler dan service pada aplikasi golang kita, sekarang saya akan melanjutkan untuk menjelaskan unit test pada repositories atau dalam level database. Aug 8, 2025 · This tutorial walks through writing unit tests for all database CRUD operations in Golang, using the sqlc code generator, lib/pq PostgreSQL driver, and testify assertions library. Testing package considers a file named with You can use this simple database test fixtures example in your Golang test cases. [1]), this post will focus on Unit Tests. com/stretchr/testify/mock" for mocking database layer. Sep 12, 2025 · When testing a service layer that depends on sql. How do you unit-test code that reaches out to the db, without introducing interfaces everywhere? It's the age-old question of programming - suppose, you have to test your application code, but like 90% of it reaches out to some of a state-saving mechanism (db, remote services, etc). New () // Define a route that uses your Testing in Golang (Part 1)— Unit Tests When you think of great software engineers you think of developers who are incredibly fast in delivering amazing features with high reliability and a Unit testing in go with MySQL This API returns JSON objects of music from the MySQL database. By following best practices and avoiding common challenges, you can create a robust suite of tests that helps you write better Go code. However, it is not really that difficult to write tests in Go. Unit testing GORM with go-sqlmock in Go I started miss the time with MagicMock in python when I started writing Go. In this article, we'll explore effective unit testing in Golang for projects built with Gin, Gorm, and PostgreSQL. go): package main import ( " Unit Test SQL in Golang, Without Mocking, Using TestContainers (Go, Postgres, Docker, TestContainers) I wrote another article about this same topic which utilized a pure Docker solution to test … This theoretically would allow each unit test to read and write data to the database but operate in complete isolation from other unit tests. The testing package, included in Go’s standard library, offers all the essential tools you need for unit testing. Accessing relational databases An overview of Go's data access features. All you need is a database instance and table truncation feature which I created a small package for. This is essential for unit testing purposes to create a mock database in the setup_test. Overall, Golang's built-in testing framework provides developers with the tools they need to create comprehensive and effective unit tests quickly and efficiently. Golang is known for its simplicity and efficiency, making it an ideal language for writing clean, maintainable code. The author, dissatisfied with the complexity and boilerplate code associated with mocking, especially for database tests, presents a method using TestContainers to run tests against a real PostgreSQL database. Today we’ll talk about unit testing. Unit tests are designed to verify the functionality of the smallest, individual parts of an application, often focusing on a single function or method. Opening a database handle You use the Go database handle to execute database operations. Accessing databases Tutorial: Accessing a relational database Introduces the basics of accessing a relational database using Go and the database/sql package in the standard library. While there are many types of tests (e. // MockDatabase is a function to set up a mock database func MockDatabase () { // would i initialize the database here? // or would i just mock the database with the data i need? // im kind of lost on how to mock the database } func TestMailingListHandler (t *testing. Contribute to goapt/dbunit development by creating an account on GitHub. The website content provides a guide on how to perform unit testing for SQL code in Golang using the DATA-DOG/go-sqlmock library. Here’s why it’s essential: Golang provides a built-in testing package that simplifies writing Learn to write unit tests in Golang as we explore the basics then move onto isolating dependencies, fakes and code coverage with the Go's standard tools. I have created a setup_test. Once you co… Learn golang mockery best practices with clear examples to simplify testing and improve code quality in Go applications. There are a few common approaches in Go: Jun 22, 2023 · Using Mocking Libraries: GoMock, Testify/mock, Go-SqlMock, Datadog/go-sqlmock, or Mongomock can help mock database interfaces, enabling testing of data access code without an actual database. Start from unit-testing, load-testing, stress-testing, integration-testing, UI-testing, e2e-testing, and many more. DB and a custom transaction function, you don’t want to hit a real database in your unit tests. In the code snippets below, I will go over the flow of how my dependency injection The article discusses an alternative approach to unit testing database interactions in Golang without relying on mocking. Jan 12, 2026 · In this article, we'll look at how unit testing works in Go in practice. Putting all the code here will make it very messy Introduction This article is going to take you through how to use unit test and integration test to improve you development experience as you create rest apis in golang. Unfortunately, again, we faced the following challenges. It makes our code more resilient, less prone to unintended consequences and gives us the confidence to deploy code iteratively. Write unit tests with mocks for a quick feedback loop while coding, and then have integration tests with a real database that are ran less frequently (but of course always before merging). I am a bit confused how do I write unit tests for the following code to Connect to postgres db and ping postgre Integration Test With Database in Golang Making a test suite in Go projects with a real live database/service Software testing is a process used to identify the correctness, completeness, and quality … Conclusion Understanding Go’s Testing Philosophy Go takes a minimalist approach to testing, providing just enough functionality in its standard library to write effective tests without requiring external testing frameworks. Job Title- GoLang Developer Location - Tampa, FL Duration- 6-12 month Implementation TCS Position Contract We are seeking a skilled Backend Developer with expertise in the Go programming language Learn golang interface basics and best practices for cleaner, more flexible code with simple examples and real-world use cases. Go Unit Testing Example This repository serves as an example for implementing unit tests in a Golang project. We often use mock testing as we unit test a function with another dependencies such as database, so we will learn on how to create it by using example that i'd wrote in here with the steps by steps on how to refactor, create unit test and using the mockery itself, let's get start into it! Why Mockery? Of course, we can’t do the same thing as the basic helper function test does, we have to prepare more, such as the mock and migration database for that. When working with databases, it can be challenging to create reliable and fast unit tests. By incorporating unit testing for individual model functions and integration testing for overall database interactions, we can build reliable and maintainable applications. This app is structured in a few layers: note:We aren’t concerned about the API layer for this post but only about testing the service an Jan 27, 2025 · Learn how to enhance your Go applications by implementing database mocking for faster, more reliable testing without a live database. Testing in Golang (Part 2) — Database Integration Tests In the second part of this blog, I would like to focus on how you can create integration tests in Go. Learn Golang unit testing with testing package, exploring advanced concepts like mocking and interfaces, table-driven tests, coverage and benchmarking. Mastering mocking databases in Golang Unit testing is a crucial part of software development that allows developers to ensure that individual components of their code work as expected. Unit test for music API Now let's write a unit test to check if music API is returning correct data. There are so many kinds of software testing. Learn golang httptest best practices for clear, fast, and reliable HTTP tests with simple examples and real-world tips for better code quality. Abstract The article "Unit Test (SQL) in Golang" discusses the process of unit testing SQL code within Go applications. g. The indicator of a good and clean application are beautifully and clearly written tests I am creating a mock database with Golang interfaces to test my handler function. I am expected to have 80% test coverage even for pushing the basic project structure. Hi guys, welcome back! In the previous lecture, we have learn how to generate golang CRUD code to Tagged with go, database, testing, tutorial. my queries is how to unit test my code: My code is below (main. Before that, please consider some common key points for unit tests in golang. And I want to share a short example of how to work with it. Writing unit tests is an essential part of software development. Testing SQL code in Golang can be… Golang unit testing can be done using the testing package. go file. In this post, I want to share about How to perform integration-testing for database repository in Golang. This article will try to explain how to use sqlmock library from DATA-DOG to simulate any sql driver behavior in tests, without needing a real database connection. In this video, we will learn how to write unit tests for the database CRUD functions that we've generated in previous lecture. I am trying to run unit test on a server, and using "github. So what I could have improved in my code was to pass the database connection in all of my SQL query functions such as the one in this code snippet GetUserName function. Golang SQL Unit Testing If You’re building any application using Go, there is high chance that you’ll be using database. Unit testing is a critical part of building robust applications in the world of software development. Skilled in developing, testing, and deploying complex software solutions for large-scale projects. Spesifically for SQL type database (Mysql, Postgre, etc), it’s very … Unit Test SQL in Golang, Without Mocking, Using Docker (Go, Postgres, Docker) UPDATE: I’ve written a companion article using TestContainers, based on a comment that I should look into that package … Unit testing is a crucial part of software development, especially when working with SQL databases. To test this case, the record should be present in the test database before the actual test run. Unlike go-sqlmock, tidb-lite lets you test your code easily without the need to start a database instance in the external environment. note: bagi yang belum membaca artikel tentang Unit Test with Mocking Technique bisa dilihat disini. Writing unit tests in Golang is essential for ensuring the reliability and correctness of your code. We'll write a few small tests, run them from the command line, and cover the most common patterns you'll see in real Go codebases, such as table-driven tests and testing functions that return errors. It emphasizes the ease of mocking SQL code in Golang by utilizing the DATA-DOG/go-sqlmock library. Testing of functions with database interactions always was challenging. golang database unit testing package. In my project am using Go with gorm and connecting mysql database. Namely, about testing our repository — working with a database. By using random data in the te Hi We are used to Elixir (with Ecto) where tests including databases are wrapped in a transaction which is automatically rollback at the end of the test. gf8me, wu2jbn, g2nl, hsnr, 72w3o, dniw, u1rj, tpfz, vurc, lzjus8,