This post is about using FluentAssertions in xUnit unit tests. Code sample Fluent Assertions supports the following unit test frameworks: MSTest (Visual Studio 2010, 2012 Update 2, 2013 and 2015) MSTest2 (Visual Studio 2017) NUnit; XUnit; XUnit2; MBUnit; Gallio; NSpec; MSpec . I divided the assertions into three types. Supports the unit test frameworks MSTest, MSTest2, Gallio, NUnit, XUnit, MBUnit, MSpec, and NSpec. A very extensive set of extension methods that allow you to more naturally specify the … I needed to compare actual to expected instances of an entity with a very large graph. This tutorial will show you how to create and run a simple test with xUnit and Fluent Assertion.. Getting started with a … With this release, Fluent Assertions is build from a single project that targets.NET Standard 1.4, 1.6 and 2.0, as well as the full.NET 4.5 Framework. The assertions have been reviewed manually to match the most expressive fluent assertion equivalents. Fluent Assertions 8.0 8.6 L4 xUnit VS Fluent Assertions A set of .NET extension methods that allow you to more naturally specify the expected outcome of a TDD or BDD-style test A very extensive set of extension methods that allow you to more naturally specify the expected outcome of a TDD or BDD-style unit tests. This is the end of the two-part series on Unit Testing with .NET Core and xUnit. As you can see Fluent Assertions provides far more test helpers than what is built into xUnit (and MSTest / NUnit). 3. Built-in fluent Assertions It has more readable Assertions out of the box like Assert.That(myClass.MyMethod(null), Throws.ArgumentNullException.With.Message.Contains("param"); NUnit also has good tutorials in using the variants for parameterized tests: e.g. Fluent API for asserting the results of unit tests that targets .NET Framework 4.5, 4.7, .NET Standard 1.3, 1.6 and 2.0. Asserts are the way that we test a result produce by running specific code. You might wonder why I target multiple versions of.NET Standard. Head to NuGet package manager, and hunt down "fluent assertions" (If you don't remember how, it's the same steps as above for NUnit, but simply search online for fluent assertions) Note: You can add it to NUnit as well. Setup your .NET Core 2 project Install XUnit. It can be used with XUnit for testing. These three testing frameworks match only on the exact type and not the subclasses, … The key implementation considerations are: How to call the Assertion Methods, How to choose the best Assertion Method to call, and What information to include in the Assertion … A very extensive set of extension methods that allow you to more naturally specify the expected outcome of a TDD or BDD-style unit tests. Supports the unit test frameworks MSTest2, NUnit3, XUnit2, MSpec, and NSpec3. It's extremely simple to pick-up and start using. As the name say, this framework use a fluent interface to create readable assertions. xUnit; NSubstitute; Fluent Assertions; Summary. Fortunately, in XUnit, the constructor is called once per test, so you can put the setup logic there, and not duplicate it per test. The attached Visual Studio solution utilizes XUnit.net 2.1 and the Visual Studio runner, which allows you to debug/run the tests in Visual Studio. Here’s one instance… For this regression test, it wasn’t no… Targets .NET Framework 4.7, .NET Core 2.1 and 3.0, as well as .NET Standard 2.0 and 2.1. The code for this article can be found on Git Hub. Neste Live Demo o MVP Renato Groffe demonstrará a utilização dos frameworks xUnit e Fluent Assertions para a implementação de testes de unidade com o .NET Core e o Visual Studio 2017. It has better support for exceptions and some other features that … Note that other testing libraries have similar ways to run something once per test ... this uses an amazing library called Fluent Assertions. I'm using MS tests here, because I've used the multiple cases with return values in NUnit. Yep, there are a couple options: 1. All the members of the xUnit family provide Assertion Methods but it is an area where there is a fair degree of variability. The simple reason is that.NET Standard 1.4 doesn’t support all the features of the.NET Framework. In this post, I’m going to show how Fluent Assertions can improve the unit test readability. It makes writing asserts so much nicer. I was very impressed with Fluent Assertions, as demonstrated in the Pluralsight course "Pragmatic Behavior-driven Design with .NET" by Rob Conery.He used it together with xUnit.net. Written by the original inventor of NUnit v2, xUnit.net is the latest technology for unit testing C#, F#, VB.NET and other .NET languages. So, jumping back to async and Tasks — this is sadly one area that is currently lacking in Fluent Assertions. xunit.github.io Source Code Changelog xUnit.net is a free, open source, community-focused unit testing tool for the .NET Framework Compare Fluent Assertions and xUnit's popularity and activity A very extensive set of extension methods that allow you to more naturally specify the expected outcome of a TDD or BDD-style unit tests. They must produce expected output against given input. NUnit provides a rich set of assertions as static methods of the Assert class. xUnit.net is a free, open Fluent Assertions is a library that provides us: Clearer explanations about why a test failed Improve readability of test source code Basically, with this library, we can read a test more like an English sentence. 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