MockQueryable.Core 7.0.1

dotnet add package MockQueryable.Core --version 7.0.1
NuGet\Install-Package MockQueryable.Core -Version 7.0.1
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.Core" Version="7.0.1" />
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add MockQueryable.Core --version 7.0.1
#r "nuget: MockQueryable.Core, 7.0.1"
#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.
// Install MockQueryable.Core as a Cake Addin
#addin nuget:?package=MockQueryable.Core&version=7.0.1

// Install MockQueryable.Core as a Cake Tool
#tool nuget:?package=MockQueryable.Core&version=7.0.1

MockQueryable

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Extensions for mocking Entity Framework Core (EFCore) operations such ToListAsync, FirstOrDefaultAsync etc. by Moq, NSubstitute or FakeItEasy When writing tests for your application it is often desirable to avoid hitting the database. The extensions allow you to achieve this by creating a context – with behavior defined by your tests – that makes use of in-memory data.

When should I use it?

If you have something similar to the following code:

var query = _userRepository.GetQueryable();

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

and you want to cover it by unit tests

How do I get started?

//1 - create a List<T> with test items
var users = new List<UserEntity>()
{
  new UserEntity{LastName = "ExistLastName", DateOfBirth = DateTime.Parse("01/20/2012")},
  ...
};

//2 - build mock by extension
var mock = users.BuildMock();

//3 - setup the mock as Queryable for Moq
_userRepository.Setup(x => x.GetQueryable()).Returns(mock);

//3 - setup the mock as Queryable for NSubstitute
_userRepository.GetQueryable().Returns(mock);

//3 - setup the mock as Queryable for FakeItEasy
A.CallTo(() => userRepository.GetQueryable()).Returns(mock);

Do you prefer DbSet?

//2 - build mock by extension
var mock = users.AsQueryable().BuildMockDbSet();

//3 - setup DbSet for Moq
var userRepository = new TestDbSetRepository(mock.Object);

//3 - setup DbSet for NSubstitute or FakeItEasy
var userRepository = new TestDbSetRepository(mock);

//3 - setup the mock as Queryable for FakeItEasy
A.CallTo(() => userRepository.GetQueryable()).Returns(mock);

Can I extend the mock object created by MockQueryable with custom logic?

MockQueryable creates for your tests a mock object based on in-memory data, but you can also add some custome logic to it.

var userId = Guid.NewGuid();
var users = new List<UserEntity>
{
    new UserEntity{Id = userId,LastName = "ExistLastName", DateOfBirth = DateTime.Parse("01/20/2012")},
   //etc. 
};
var mock = users.AsQueryable().BuildMockDbSet();

//Aditional setup for FindAsync
mock.Setup(x => x.FindAsync(userId)).ReturnsAsync((object[] ids) =>
{
    var id = (Guid)ids[0];
    return users.FirstOrDefault(x => x.Id == id);
});
var userRepository = new TestDbSetRepository(mock.Object);

//Execution FindAsync
var user = await ((DbSet<UserEntity>) userRepository.GetQueryable()).FindAsync(userId);

Check out the sample project

Where can I get it?

First, install NuGet.

If you are using Moq - then, install MockQueryable.Moq from the package manager console:

PM> Install-Package MockQueryable.Moq

If you are using NSubstitute - then, install MockQueryable.NSubstitute from the package manager console:

PM> Install-Package MockQueryable.NSubstitute

If you are using FakeItEasy - then, install MockQueryable.FakeItEasy from the package manager console:

PM> Install-Package MockQueryable.FakeItEasy

Can I use it with my favorite mock framework?

You can install MockQueryable.EntityFrameworkCore from the package manager console:

PM> Install-Package MockQueryable.EntityFrameworkCore

Downloads

or even MockQueryable.Core

PM> Install-Package MockQueryable.Core

Downloads

Then make your own extension for your favorite mock framework

Product Compatible and additional computed target framework versions.
.NET net5.0 was computed.  net5.0-windows was computed.  net6.0 was computed.  net6.0-android was computed.  net6.0-ios was computed.  net6.0-maccatalyst was computed.  net6.0-macos was computed.  net6.0-tvos was computed.  net6.0-windows was computed.  net7.0 was computed.  net7.0-android was computed.  net7.0-ios was computed.  net7.0-maccatalyst was computed.  net7.0-macos was computed.  net7.0-tvos was computed.  net7.0-windows was computed.  net8.0 was computed.  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. 
.NET Core netcoreapp3.0 was computed.  netcoreapp3.1 was computed. 
.NET Standard netstandard2.1 is compatible. 
MonoAndroid monoandroid was computed. 
MonoMac monomac was computed. 
MonoTouch monotouch was computed. 
Tizen tizen60 was computed. 
Xamarin.iOS xamarinios was computed. 
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  • .NETStandard 2.1

    • No dependencies.

NuGet packages (1)

Showing the top 1 NuGet packages that depend on MockQueryable.Core:

Package Downloads
MockQueryable.EntityFrameworkCore

Extension for mocking Entity Framework Core operations such ToListAsync, FirstOrDefaultAsync etc. When writing tests for your application it is often desirable to avoid hitting the database. The extension allows you to achieve this by creating a context – with behavior defined by your tests – that makes use of in-memory data.

GitHub repositories (2)

Showing the top 2 popular GitHub repositories that depend on MockQueryable.Core:

Repository Stars
CodeMazeBlog/CodeMazeGuides
The main repository for all the Code Maze guides
nuyonu/N-Tier-Architecture
This is a n-layer architecture based on Common web application architectures.
Version Downloads Last updated
7.0.1 24,488 3/7/2024
7.0.0 2,916,514 11/21/2022
6.0.1 3,657,979 3/28/2022
6.0.0 192,438 3/24/2022
5.0.2 211,224 3/24/2022
5.0.1 2,818,647 5/25/2021
5.0.0 1,195,335 11/12/2020
5.0.0-preview.7 28,909 7/28/2020
3.1.3 1,923,586 5/19/2020
3.1.2 163,729 4/17/2020
3.1.1 416,965 1/25/2020
3.0.2 60,657 12/20/2019
3.0.1 77,514 10/11/2019
3.0.0 20,565 9/30/2019
1.1.0 681,758 2/28/2019
1.0.4 69,612 1/29/2019
1.0.3 263,316 8/30/2018
1.0.2 71,418 1/17/2018
1.0.1 2,157 12/26/2017
1.0.0 20,242 12/26/2017

#74 Fix ToListAsync() for mocked DbSet by using lazy-creation of AsyncEnumerator - Thanks @fischero19
 #75 Added method for build DbSet from IEnumerable. - Thanks @sq735