While I use .NET examples for this post, this testing practice is actually language-agnostic and can be carried over to any language. Naming your variables in a clear way is an important part of any kind of code you’ll write, and the code for your tests is no exception. Eventually, if you need to perform […]
.NET testing practices – naming variables in tests Read More »
If you’ve ever tried to mock out claims in C# with something like Moq or NSubstitute, you may have already gone through trying to mock HttpContextBase, then ClaimsPrincipal, then finally ClaimsIdentity with some Claims. As you can see just from that alone, it’s a bit of a hassle to chain all the mocking to finally
How to mock ClaimsPrincipal in C# Read More »
The problem with static IO methods in C# The System.IO namespace in .NET provides a lot of helpful methods to interact with a file system, but a drawback of them is that many of these methods are static. This is fine for integration testing, where you can test using real files (which probably live inside
How to mock File, FileStream, Directory, and other IO calls in C# Read More »
This post is part 3 of a 3-part series: Part 1: How to test a database in C# with TestContainers Part 2: Resetting your test database in C# with Respawn Part 3: Creating a clean test suite for C# integration tests Overview Now, we’ve got a test suite successfully running that uses a containerized database
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This post is part 2 of a 3-part series: Part 1: How to test a database in C# with TestContainers Part 2: Resetting your test database in C# with Respawn Part 3: Creating a clean test suite for C# integration tests For our goal of setting up a containerized database for tests, it’s important
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Here are the slides and Github repository for my talk for the San Antonio .NET User Group on Jan 18, 2024. Github Repository https://github.com/danielwarddev/TerrificBookstore Slides
San Antonio .NET User Group – Terrific .NET Testing Tips & Tricks Read More »
This post is part 1 of a 3-part series: Part 1: How to test a database in C# with TestContainers Part 2: Resetting your test database in C# with Respawn Part 3: Creating a clean test suite for C# integration tests The problem Whether you’re using EF Core, Dappr, or something else, you probably want
Part 1: How to test a database in C# with TestContainers Read More »
If you’ve used AutoFixture with Entity Framework before, chances are you’ve encountered an error like this: AutoFixture.ObjectCreationExceptionWithPath : AutoFixture was unable to create an instance of type AutoFixture.Kernel.SeededRequest because the traversed object graph contains a circular reference. Or maybe this: Microsoft.EntityFrameworkCore.DbUpdateException : An error occurred while saving the entity changes. See the inner exception for
Using AutoFixture with EF Core without circular references Read More »
I was recently writing some tests that had a mocked method that I wanted to return the same value several times in a row from. It turns out, NSubstitute can do this out of the box. While Returns takes a value T, if you look at its method signature, you’ll see it takes another argument
How to return a value several times in a row using NSubstitute Read More »
If you’ve ever made a test in xUnit with something like 8+ InlineDatas and thought that there has to be a better way… Well, there is! The Xunit.Combinatorial package by Andrew Arnott allows you to specify values in multiple CombinatorialValues attributes, then will run a separate test for each possible combination of those values. It’s
How to run every possible combination of arguments in xUnit Read More »