MockQueryable.NSubstitute 11.0.0

.NET 11.0

dotnet add package MockQueryable.NSubstitute --version 11.0.0

NuGet\Install-Package MockQueryable.NSubstitute -Version 11.0.0

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="MockQueryable.NSubstitute" Version="11.0.0" />

For projects that support PackageReference, copy this XML node into the project file to reference the package.

<PackageVersion Include="MockQueryable.NSubstitute" Version="11.0.0" />
                    

                            Directory.Packages.props

<PackageReference Include="MockQueryable.NSubstitute" />
                    

                            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 MockQueryable.NSubstitute --version 11.0.0

The NuGet Team does not provide support for this client. Please contact its maintainers for support.

#r "nuget: MockQueryable.NSubstitute, 11.0.0"

#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 MockQueryable.NSubstitute@11.0.0

#: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=MockQueryable.NSubstitute&version=11.0.0
                    

                            Install as a Cake Addin

#tool nuget:?package=MockQueryable.NSubstitute&version=11.0.0
                    

                            Install as a Cake Tool

The NuGet Team does not provide support for this client. Please contact its maintainers for support.

MockQueryable

Extensions for mocking Entity Framework Core async queries like ToListAsync, FirstOrDefaultAsync, and more using popular mocking libraries such as Moq, NSubstitute, and FakeItEasy — all without hitting the database.

❤️ If you really like the tool, please 👉 Support the project or ☕ Buy me a coffee.

📦 NuGet Packages:

Package	Latest Version	Install via Package Manager
		`Install-Package MockQueryable.Core`
		`Install-Package MockQueryable.EntityFrameworkCore`
		`Install-Package MockQueryable.Moq`
		`Install-Package MockQueryable.NSubstitute`
		`Install-Package MockQueryable.FakeItEasy`

✅ Build & Status

⭐ GitHub Stats

Stars Contributors Last Commit Commit Activity Open Issues

💡 Why Use MockQueryable?

Avoid hitting the real database in unit tests when querying via IQueryable:

var query = _userRepository.GetQueryable();

await query.AnyAsync(x => ...);
await query.FirstOrDefaultAsync(x => ...);
await query.ToListAsync();
// etc.

How It Works

MockQueryable creates a custom implementation of:

IQueryable<T>
IAsyncEnumerable<T>
IAsyncQueryProvider

allowing EF Core async extensions to execute against in-memory collections.

👷🏻‍See Architecture.

🚀 Getting Started

1. Create Test Data

var users = new List<UserEntity>
{
    new UserEntity { LastName = "Smith", DateOfBirth = new DateTime(2012, 1, 20) },
    // More test data...
};

2. Build the Mock

var mock = users.BuildMock(); // for IQueryable

3. Set Up in Your favorite Mocking Framework

Moq

_userRepository.Setup(x => x.GetQueryable()).Returns(mock);

NSubstitute

_userRepository.GetQueryable().Returns(mock);

FakeItEasy

A.CallTo(() => userRepository.GetQueryable()).Returns(mock);

🗃️ Mocking `DbSet<T>`

var mockDbSet = users.BuildMockDbSet();

// Moq
var repo = new TestDbSetRepository(mockDbSet.Object);

// NSubstitute / FakeItEasy
var repo = new TestDbSetRepository(mockDbSet);

🔧 Adding Custom Logic

Example: Custom `FindAsync`

mock.Setup(x => x.FindAsync(userId)).ReturnsAsync((object[] ids) =>
{
    var id = (Guid)ids[0];
    return users.FirstOrDefault(x => x.Id == id);
});

Example: Custom Expression Visitor

Build a mock with the custom SampleLikeExpressionVisitor for testing EF.Functions.Like

var mockDbSet = users.BuildMockDbSet<UserEntity, SampleLikeExpressionVisitor>();

🧩 Extend for Other Frameworks

You can even create your own extensions. Check the example here.

🔍 Sample Project

See the sample project for working examples.

Product	Compatible and additional computed target framework versions.
.NET	net11.0 is compatible.

Compatible target framework(s)

Included target framework(s) (in package)

Learn more about Target Frameworks and .NET Standard.

net11.0
- MockQueryable.EntityFrameworkCore (>= 11.0.0)
- NSubstitute (>= 6.2.0)

NuGet packages

This package is not used by any NuGet packages.

GitHub repositories (4)

Showing the top 4 popular GitHub repositories that depend on MockQueryable.NSubstitute:

Repository	Stars
nuyonu/N-Tier-Architecture This is a n-layer architecture based on Common web application architectures.	377
kaybi-gh/K7 Self-hosted media server for a small circle of family and friends.	350
alex289/CleanArchitecture Sample .NET 10 API project including Clean Architecture principles, Onion Architecture, MediatR, and Entity Framework with unit and integration tests using xUnit	292
suxrobGM/logistics-app AI-powered fleet management platform with an agentic dispatcher that matches loads to trucks, ensures HOS compliance, and optimizes routes. Built for trucking companies.	209

Version	Downloads	Last Updated
11.0.0	0	11/11/2026
10.0.13	46,482	10/19/2026
10.0.12	113,639	9/13/2026
10.0.8	407,709	5/16/2026
10.0.5	596,777	3/15/2026
10.0.2	221,219	1/29/2026
10.0.1	143,730	11/22/2025
10.0.0	6,878	11/22/2025
9.0.0	193,940	10/6/2025
8.0.1	148,924	10/6/2025
8.0.0	340,245	7/27/2025
7.0.4-beta	66,961	9/24/2024
7.0.3	2,340,342	9/2/2024
7.0.2	74,634	8/20/2024
7.0.1	1,075,727	3/7/2024
7.0.0	1,201,929	11/21/2022
6.0.1	999,479	3/28/2022
6.0.0	139,385	3/24/2022
5.0.2	94,925	3/24/2022
5.0.1	500,645	5/25/2021

Support .NET 11 and Entity Framework Core 11; update dependencies to current stable versions.