Library.UnitTesting 1.0.2

dotnet add package Library.UnitTesting --version 1.0.2
                    
NuGet\Install-Package Library.UnitTesting -Version 1.0.2
                    
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package.
<PackageReference Include="Library.UnitTesting" Version="1.0.2" />
                    
For projects that support PackageReference, copy this XML node into the project file to reference the package.
<PackageVersion Include="Library.UnitTesting" Version="1.0.2" />
                    
Directory.Packages.props
<PackageReference Include="Library.UnitTesting" />
                    
Project file
For projects that support Central Package Management (CPM), copy this XML node into the solution Directory.Packages.props file to version the package.
paket add Library.UnitTesting --version 1.0.2
                    
#r "nuget: Library.UnitTesting, 1.0.2"
                    
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package.
#:package Library.UnitTesting@1.0.2
                    
#:package directive can be used in C# file-based apps starting in .NET 10 preview 4. Copy this into a .cs file before any lines of code to reference the package.
#addin nuget:?package=Library.UnitTesting&version=1.0.2
                    
Install as a Cake Addin
#tool nuget:?package=Library.UnitTesting&version=1.0.2
                    
Install as a Cake Tool

Library.UnitTesting

Build NuGet License: MIT

A lightweight, opinionated library for writing high-quality unit tests in .NET.

It wraps up common testing patterns using:

โœจ Features

  • ๐Ÿš€ Easy object instantiation with Instantiator (AutoFixture under the hood)
  • โœ… Null-guard assertions for constructors and methods
  • โ›” Async void method detection (and test enforcement)
  • ๐Ÿ” Custom It.Is<T> helpers using FluentAssertions exposed with ItExt
  • ๐Ÿงฑ Abstract base test class to reduce boilerplate

๐Ÿ“ฆ Installation

Available on NuGet:

dotnet add package Library.UnitTesting

๐Ÿงช Example

Sample code:

public class SampleService(IDateTimeProvider dateTimeProvider) : ISampleService
{
    public string Greet(string name)
    {
        ArgumentNullException.ThrowIfNull(name);

        var now = dateTimeProvider.Now;
        return $"Hello, {name}. It's {now:HH:mm}.";
    }
}

Test using Library.UnitTesting:

[TestFixture]
public class SampleServiceTests : UnitTestBase<SampleService>
{
    private readonly Mock<IDateTimeProvider> dateTimeProviderMock = new();

    [Test]
    public void Greet_Valid_ReturnsCorrectResult()
    {
        // Arrange
        var name = this.Instantiator.Random<string>();
        var dateTime = this.Instantiator.Random<DateTime>();
        var expected = $"Hello, {name}. It's {dateTime:HH:mm}.";

        this.dateTimeProviderMock.Setup(x => x.Now).Returns(dateTime);

        var target = this.GetTarget();

        // Act
        var actual = target.Greet(name);

        // Assert
        actual.Should().BeEquivalentTo(expected);
    }

    protected override SampleService GetTarget()
    {
        return new SampleService(this.dateTimeProviderMock.Object);
    }
}

๐Ÿ™Œ Contributing

Pull requests and issue reports welcome.
This library reflects real-world patterns โ€” so improvements from others are encouraged.


๐Ÿ“„ License

MIT ยฉ Rmkrs

Product Compatible and additional computed target framework versions.
.NET net8.0 is compatible.  net8.0-android was computed.  net8.0-browser was computed.  net8.0-ios was computed.  net8.0-maccatalyst was computed.  net8.0-macos was computed.  net8.0-tvos was computed.  net8.0-windows was computed.  net9.0 was computed.  net9.0-android was computed.  net9.0-browser was computed.  net9.0-ios was computed.  net9.0-maccatalyst was computed.  net9.0-macos was computed.  net9.0-tvos was computed.  net9.0-windows was computed.  net10.0 was computed.  net10.0-android was computed.  net10.0-browser was computed.  net10.0-ios was computed.  net10.0-maccatalyst was computed.  net10.0-macos was computed.  net10.0-tvos was computed.  net10.0-windows was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

NuGet packages

This package is not used by any NuGet packages.

GitHub repositories

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Version Downloads Last Updated
1.0.2 275 7/20/2025
1.0.1 184 7/20/2025