FakeItEasy / FakeItEasy

The easy mocking library for .NET

A .NET dynamic fake library for creating all types of fake objects, mocks, stubs etc.

• Easier semantics, all fake objects are just that - fakes - the use of the fakes determines whether they're mocks or stubs.
• Context-aware fluent interface guides the developer.
• Designed for ease of use.
• Full compatibility with both C# and VB.Net.

Faking amazing example

// Creating a fake object is very easy!
// No mocks, or stubs; everything's a fake.
var shop = A.Fake<ICandyShop>();

// Easily set up a call to return a value.
var lollipop = new Lollipop();
A.CallTo(() => shop.GetTopSellingCandy()).Returns(lollipop);

// Exercise your system under test by using the fake as you
// would an instance of the faked type.
var customer = new SweetTooth();
customer.BuyTastiestCandy(shop);

// Asserting uses the same syntax as configuring calls.
A.CallTo(() => shop.BuyCandy(lollipop)).MustHaveHappened();

Resources

• Website
• Quickstart
• Documentation
• Chat
• NuGet packages on NuGet.org, targeting:
  • .NET Framework 4.6.2
  • .NET Standard 2.0
  • .NET Standard 2.1
  • .NET 6.0

---

FakeItEasy logo designed by Vanja Pakaski.