Feb 25, 2025 · Use the Assert classes of the Microsoft.VisualStudio.TestTools.UnitTesting namespace to verify specific functionality. A test method exercises the code of a method in your application's …

I tried the other answers in this thread, and they didn't work for me and I was comparing collections of objects that had the same values stored in their properties, but the objects were different.

Feb 9, 2023 · xUnit has become the favorite unit testing tool for many .NET developers. The assertion library documentation however is quite sparse. Let’s explore the testing of list collections using a …

3 days ago · A cheat sheet of Asserts for xUnit.net in C#. GitHub Gist: instantly share code, notes, and snippets.

When asserting on a projection of a collection the failure message will be less descriptive as it only knows about the projected value and not object containing that property.

Assert.All () Failure: 4 out of 256 items in the collection did not pass. [3]: Item: 4 Error: Assert.Equal () Failure: Values differ Expected: 0.151808769 Actual: 0. ...

Jul 11, 2023 · To assert that a date/time is (not) within a specified time span from another date/time value you can use this method:

Aug 10, 2025 · Are your collection assertions still stuck in the world of Assert.Contains and manual loops? It’s time to upgrade your testing style. In this post, you’ll learn how to use Fluent Assertions...

Mar 9, 2020 · My first guess would be that this code checks that the specified condition (the contains) is true for every element in the list. This turns out not to be the case. The Assert.Collection expects a …

If a test contains multiple assertions, any that follow the one that failed will not be executed. For this reason, it's usually best to try for one assertion per test.