AutoFixture

AutoFixture makes it easier for developers to do Test-Driven Development by implementing the principle of Constrained Non-Determinism to create anonymous test objects. In other words, it offers a generic implementation of the Test Data Builder pattern.

AutoFixture was designed to make Test-Driven Development more productive. It does so by removing the need for hand-coding anonymous variables as part of a test's Fixture Setup phase. Among other features, it offers a generic implementation of the Test Data Builder pattern.

When writing unit tests, you typically need to create some objects that represent the initial state of the test. Often, an API will force you to specify much more data than you really care about, so you frequently end up creating objects that has no influence on the test, simply to make the code compile.