Stryker.NET
xUnit
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Stryker.NET | xUnit | |
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14 | 36 | |
1,700 | 4,010 | |
1.1% | 1.1% | |
9.4 | 9.2 | |
6 days ago | 1 day ago | |
C# | C# | |
Apache License 2.0 | GNU General Public License v3.0 or later |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
Stryker.NET
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Stryker.NET alternatives - Testura.Mutation, visualmutator, fettle, and Faultify
5 projects | 9 Jun 2023
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Do you guys mock everything in your Unit Tests?
Bogus - For creating fake data Verify - Snapshot testing for .NET MELT - For testing ILogger usage Stryker - Mutation Testing for .NET TestContainers - run docker programmatically in integration tests
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Don't target 100% coverage
Let's try it on our small example using Stryker.
- PhD'ers, what are you working on? What CS topics excite you?
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Killing mutants to improve your tests
There are tools that do this automatically, stryker[2] is one of them. When you run stryker, it will create many mutant versions of your production code, and run your tests for each mutant (that's how mutations are called in stryker's' documentation) version of the code. If your tests fail then the mutant is killed. If your tests passed, the mutant survived. Let's have a look at the the result of runnning stryker against reffects-store's code:
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Relesed v1.0.0 of my pet javasscript project yesterday after hitting 100% coverage- a gesture detection library
I haven't tried it yet, but last time I researched it, this is the library that looked most promising: https://stryker-mutator.io/
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When do you consider your unit tests be "enough"?
Because of the above I've generally been using tools like Stryker.NET and FsCheck to augment my testing suite. I'm still doing unit testing to find the more obvious "I haven't had my coffee, let's make sure I'm doing what I think I'm doing" bugs. I'm just using things like mutation testing, property testing, fuzzing, etc. to find the deeper issues in my code. There's a ton of libraries out there, including one that I've built for myself to help with testing but FsCheck and Stryker are just beautiful. And if you're interested in fuzzing, SharpFuzz is a great option. But that one isn't quite as easy of an on ramp compared to the other two that I mentioned.
xUnit
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Optimizing C# code analysis for quicker .NET compilation
Several well-known NuGet packages such as xUnit.net, FluentAssertions, StyleCop, Entity Framework Core, and others include by default a significant number of Roslyn analyzers. They help you adhere to the conventions and best practices of these libraries.
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Comprehensive Unit Testing: A Line-by-Line Approach
xUnit -> https://xunit.net/
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CI/CD Pipeline Using GitHub Actions: Automate Software Delivery
.NET / xUnit / NUnit / MSTest
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Fluent Assertions: Fluently Assert the Result of .NET Tests
This library extends the traditional assertions provided by frameworks like MSTest, NUnit, or XUnit by offering a more extensive set of extension methods. Fluent Assertions supports a wide range of types like collections, strings, and objects and even allows for more advanced assertions like throwing exceptions.
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Running a XUnit test with C#?
The git repo has other runners. AssemblyRunner appears to be the best fit for an already compiled tests project, but there is a runner that can be wrapped into an MSBuild task for example.
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Setting up a simple testing project with C#
At this point you're going to see a familiar screen asking you to select a project. Here we're looking for a test project. By default, Visual Studio gives you access to 3 different testing frameworks based on your choice of project. These are MSTest, XUnit and NUnit. Ultimately, all 3 of these testing accomplish the same thing, and I've worked with all of them at various points in my career. The difference is mainly in exact syntax and documentation. Although, it's generally considered that MSTest is a little "older" than NUnit or XUnit, so I tend to see it less now. For the purposes of this demo, I'm going to go with NUnit:
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Integration tests for AWS serverless solution
xUnit unit tests tool
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Test-Driven Development
Use a testing framework: Utilize a testing framework like NUnit, xUnit, or MSTest to create, organize, and run your tests. These frameworks provide a consistent way to write tests, generate test reports, and integrate with continuous integration tools.
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NUnit vs XUnit for .net6+ microservices
Attachments: At this time you still cannot attach files to test runs, although the functionality finally is coming in V3!
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Creating Your Own Custom Attributes in C# and Retrieving Their Values
I was trying to think of an example of where C# attributes might be used in every day life and then it dawned on me: unit testing! If you have ever used a unit test framework such as MSTest, NUnit or xUnit, you will have used attributes in C# to define the classes and methods that you would like the test framework to execute. This is just one example of how you can use attributes to assign metadata to elements of your code.
What are some alternatives?
Shouldly - Should testing for .NET—the way assertions should be!
NUnit - NUnit Framework
Fluent Assertions - 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. Targets .NET Framework 4.7, as well as .NET Core 2.1, .NET Core 3.0, .NET 6, .NET Standard 2.0 and 2.1. Supports the unit test frameworks MSTest2, NUnit3, XUnit2, MSpec, and NSpec3.
Moq - Repo for managing Moq 4.x [Moved to: https://github.com/moq/moq]
NSubstitute - A friendly substitute for .NET mocking libraries.
MSTest - MSTest framework and adapter
Expecto - A smooth testing lib for F#. APIs made for humans! Strong testing methodologies for everyone!
Machine.Specifications - Machine.Specifications is a Context/Specification framework for .NET that removes language noise and simplifies tests.
Bogus - :card_index: A simple fake data generator for C#, F#, and VB.NET. Based on and ported from the famed faker.js.
Fixie - Ergonomic Testing for .NET
sectester-net - SecTester is a new tool that integrates our enterprise-grade scan engine directly into your unit tests.
Rhino Mocks