C# library to populate object with random data [closed]

Question

I want to populate my object with random data (for testing purposes), is there a library to do it?

Some kind of reflection method that will traverse object graph and initialize primitive properties like (string, int, DateTime, etc) (but do it the deep way, including collections, child objects, etc)

Answer 1

Bogus

Bogus is a simple and sane fake data generator for C# and .NET. A C# port of faker.js and inspired by FluentValidation's syntax sugar. Supports .NET Core.

Setup

public enum Gender {    Male,    Female }  var userIds = 0;  var testUsers = new Faker<User>()     //Optional: Call for objects that have complex initialization     .CustomInstantiator(f => new User(userIds++, f.Random.Replace("###-##-####")))      //Basic rules using built-in generators     .RuleFor(u => u.FirstName, f => f.Name.FirstName())     .RuleFor(u => u.LastName, f => f.Name.LastName())     .RuleFor(u => u.Avatar, f => f.Internet.Avatar())     .RuleFor(u => u.UserName, (f, u) => f.Internet.UserName(u.FirstName, u.LastName))     .RuleFor(u => u.Email, (f, u) => f.Internet.Email(u.FirstName, u.LastName))     //Use an enum outside scope.     .RuleFor(u => u.Gender, f => f.PickRandom<Gender>())     //Use a method outside scope.     .RuleFor(u => u.CartId, f => Guid.NewGuid()); 

Generate

var user = testUsers.Generate(); Console.WriteLine(user.DumpAsJson());  /* OUTPUT: {   "Id": 0,   "FirstName": "Audrey",   "LastName": "Spencer",   "FullName": "Audrey Spencer",   "UserName": "Audrey_Spencer72",   "Email": "[email protected]",   "Avatar": "https://s3.amazonaws.com/uifaces/faces/twitter/itstotallyamy/128.jpg",   "Gender": 0,   "CartId": "863f9462-5b88-471f-b833-991d68db8c93", .... 

Without Fluent Syntax

  public void Without_Fluent_Syntax()   {       var random = new Bogus.Randomizer();       var lorem = new Bogus.DataSets.Lorem();       var o = new Order()           {               OrderId = random.Number(1, 100),               Item = lorem.Sentence(),               Quantity = random.Number(1, 10)           };       o.Dump();   }   /* OUTPUT:   {     "OrderId": 61,     "Item": "vel est ipsa",     "Quantity": 7   } */