I like using the Builder pattern for building test data in unit tests. Builder pattern makes it clean if I need to build a valid object, in the unit tests, with the minimum required properties. It also makes it clear when I need to build an object and explicitly specify a different value for any of … [Read more…]
I was tasked to build a method that would take in any object and a string that specifies the property to be returned. Let’s say we have a complex object as followed public class Company { public string Name { get; set; } public string ABN { get; set; } public int YearFounded { get; … [Read more…]
So often we have to use DateTime.UtcNow or DateTime.Now in our code. To make it easier to mock current date time in unit test and to make unit tests more resilient, it’s better to not use DateTime.UtcNow or DateTime.Now directly but rather pass it in or make it as a property. Let’s say we have a … [Read more…]
It’s very common to use AutoMapper to map one object to another. However if not configured, unit testing functions that use AutoMapper will throw a missing mapping exception. I’ve seen in previous projects 2 different approaches developers use AutoMapper. I’m going to show how to configure AutoMapper in unit test for each of the approaches. … [Read more…]
This post is part of a series of blog posts about bad codes or bad practices I’ve come across. Note that this is my personal opinion and some of the things I mention could be debatable. Post 1: Code review, why it matters Post 2: Not including JS, CSS and static content files in project Post 3: Let’s … [Read more…]
In my new project, we use EF Core for ORM. We have unit tests for the repository layer where the DbContext is used. I’m going to show how to use in-memory database to create the DbContext. I’ll use the model below for example public class Article { [DatabaseGenerated(DatabaseGeneratedOption.Identity)] public int ArticleNumber { get; set; } … [Read more…]
One of the teams in my previous role built a webhook which sends a request to the proposed endpoint from the subscribed external client if certain events happen in the application. One of the requirements is if the webhook fails to send request to the proposed endpoint, it will send an email notification to the … [Read more…]
This post is part of a series of blog posts about bad codes or bad practices I’ve come across. Note that this is my personal opinion and some of the things I mention could be debatable. Post 1: Code review, why it matters Post 2: Not including JS, CSS and static content files in project Post 3: Let’s … [Read more…]