What is it?

Through a fluent, extensible interface, NBuilder allows you to rapidly create test data, automatically assigning values to properties and public fields that are of type of the built in .NET data types (e.g. ints and strings). NBuilder allows you to override for properties you are interested in using lambda expressions.

NBuilder is an open source project, hosted on google code

Some quick examples

Example #1

    var products = Builder<Product>.CreateListOfSize(10)
                                   .TheFirst(2)
                                       .With(x => x.Title = "special title")
                                   .Build();

Would give you something like this:

Example #2

    var products = Builder<Product>.CreateListOfSize(10)
                                   .All()
                                       .WithConstructor(() => new Product("my title"))
                                   .Random(5)
                                       .WithConstructor(() => new Product("my other title"))
                                       .And(x => x.Created = August.The17th.At(09, 00))
                                   .Build();

Would give you something like this:

Example #3


    var generator = new UniqueRandomGenerator();

    var products = Builder<Product>.CreateListOfSize(10)
                                   .TheFirst(2)
                                       .With(x => x.Title = "special title 1")
                                       .And(x => x.Description = "special description 1")
                                   .TheNext(3)
                                       .With(x => x.Title = "special title 2")
                                   .TheNext(5)
                                       .With(x => x.Title = "special title 3")
                                       .And(x => x.Price = generator.Next(0m, 10m))
                                   .Build();

Would give you something like this: