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Top 23 C# Testing Projects
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Bogus
:card_index: A simple fake data generator for C#, F#, and VB.NET. Based on and ported from the famed faker.js.
Project mention: Effective Strategies for Writing Unit Tests with External Dependencies like Databases and APIs | dev.to | 2024-11-14Sometimes, especially when testing data-driven applications, it is important to simulate a wide variety of inputs and conditions. One of the best ways to achieve this is by using fake data generators. Tools like Faker (Python) or Bogus (C#) allow you to generate large volumes of realistic but random data. This is particularly useful when you need to test how your code handles various types of data (such as user information, addresses, or product details) without relying on real data.
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Project mention: From Bug Fixes to Best Practices: My Open Source Contributions to ChatCraft and xUnit | dev.to | 2024-11-20
Add an analyzer which recommends nameof usage #2991
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testcontainers-dotnet
A library to support tests with throwaway instances of Docker containers for all compatible .NET Standard versions.
Docs
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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.
For assertions inside tests, I recommend using FluentAssertions Library. And if you want to generate some fake data for your tests, I recommend using Bogus.
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AutoFixture
AutoFixture is an open source library for .NET designed to minimize the 'Arrange' phase of your unit tests in order to maximize maintainability. Its primary goal is to allow developers to focus on what is being tested rather than how to setup the test scenario, by making it easier to create object graphs containing test data.
Yes, it does feel like some of the "standard stuff" in other more nuanced languages are missing (especially miss AutoFixture ngl). Some of those are a conscious decison by the golang team for example.
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Project mention: Show HN: A fake SMTP server for software integration testing | news.ycombinator.com | 2024-07-21
there's a few of them out there, I use Papercut https://github.com/ChangemakerStudios/Papercut-SMTP
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Verify
Verify is a snapshot testing tool that simplifies the assertion of complex data models and documents.
Project mention: How To Simplify Assertions in Unit and Integration Tests with Verify in .NET | dev.to | 2024-10-08Verify is a library that allows you to perform snapshot-based testing. A snapshot is a saved version of your test result, such as an object or a response, which is then compared against future test runs to ensure the output remains consistent. If the output changes unexpectedly, Verify will fail the test and highlight the difference, allowing you to quickly identify and fix issues.
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To substitute the object creating a mock, we'll use the NSubstitute package. This article will not cover how to use the NSubstitute, but to explain the basics we say to the code "When someone calls method X, returns the value Y", so the result is a fake value.
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ReportGenerator
ReportGenerator converts coverage reports generated by coverlet, OpenCover, dotCover, Visual Studio, NCover, Cobertura, JaCoCo, Clover, gcov or lcov into human readable reports in various formats.
Project mention: Beginner's Guide to Test Coverage with NUnit, Coverlet, and ReportGenerator | dev.to | 2024-06-17ReportGenerator - Powerful code coverage visualization tool. More here
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NUnit is user-friendly and highly extendable for your unit testing needs.
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The website is called FlaUI, and they even have a GitHub repository that looks legit.
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SpecFlow
#1 .NET BDD Framework. SpecFlow automates your testing & works with your existing code. Find Bugs before they happen. Behavior Driven Development helps developers, testers, and business representatives to get a better understanding of their collaboration
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Project mention: From Good to Great: Taking Your Test Coverage to the Next Level | dev.to | 2024-10-23
Pick what works for you. Java? Try Pitest for mutation testing. JavaScript? Stryker Mutator's got you covered.
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mockhttp
Testing layer for Microsoft's HttpClient library. Create canned responses using a fluent API.
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System.IO.Abstractions
Just like System.Web.Abstractions, but for System.IO. Yay for testable IO access!
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coyote
Coyote is a library and tool for testing concurrent C# code and deterministically reproducing bugs.
Project mention: What's the big deal about Deterministic Simulation Testing? | news.ycombinator.com | 2024-08-20For anyone writing services in C# there’s a project from MSR called Coyote that does similar deterministic simulation testing by systematically testing interleavings of async code.
https://microsoft.github.io/coyote/
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WireMock.Net
WireMock.Net is a flexible product for stubbing and mocking web HTTP responses using advanced request matching and response templating. Based on the functionality from http://WireMock.org, but extended with more functionality.
Project mention: Integration Testing in .NET: A Practical Guide to Tools and Techniques | dev.to | 2024-09-07When we need to mock external APIs, WireMock.Net is a powerful tool that allows us to simulate HTTP interactions.
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Easy control over the dependencies of your contracts. You can even automate it by writing architectural tests (NetArchTest, ArchUnitNET).
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Compare-Net-Objects
What you have been waiting for :+1: Perform a deep compare of any two .NET objects using reflection. Shows the differences between the two objects.
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ArchUnitNET
A C# architecture test library to specify and assert architecture rules in C# for automated testing.
Easy control over the dependencies of your contracts. You can even automate it by writing architectural tests (NetArchTest, ArchUnitNET).
NOTE:
The open source projects on this list are ordered by number of github stars.
The number of mentions indicates repo mentiontions in the last 12 Months or
since we started tracking (Dec 2020).
C# Testing discussion
C# Testing related posts
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From Bug Fixes to Best Practices: My Open Source Contributions to ChatCraft and xUnit
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Storing passwords safely (C#)
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Hacktoberfest 4/4: The final PR
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From Good to Great: Taking Your Test Coverage to the Next Level
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MockServer: Easy mocking of any system you integrate (HTTP or HTTPS)
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How To Simplify Assertions in Unit and Integration Tests with Verify in .NET
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Testcontainers: Testes de Integração em Containers
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A note from our sponsor - SaaSHub
www.saashub.com | 1 Dec 2024
Index
What are some of the best open-source Testing projects in C#? This list will help you:
| Project | Stars | |
|---|---|---|
| 1 | Bogus | 8,882 |
| 2 | xUnit | 4,242 |
| 3 | testcontainers-dotnet | 3,824 |
| 4 | Fluent Assertions | 3,800 |
| 5 | AutoFixture | 3,359 |
| 6 | Papercut | 2,968 |
| 7 | Verify | 2,877 |
| 8 | NSubstitute | 2,686 |
| 9 | ReportGenerator | 2,647 |
| 10 | NUnit | 2,524 |
| 11 | FlaUI | 2,296 |
| 12 | SpecFlow | 2,250 |
| 13 | Shouldly | 2,051 |
| 14 | Stryker.NET | 1,790 |
| 15 | FakeItEasy | 1,711 |
| 16 | mockhttp | 1,628 |
| 17 | System.IO.Abstractions | 1,525 |
| 18 | coyote | 1,495 |
| 19 | WireMock.Net | 1,420 |
| 20 | NetArchTest | 1,409 |
| 21 | pose | 1,075 |
| 22 | Compare-Net-Objects | 1,072 |
| 23 | ArchUnitNET | 932 |
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