test-data-generation

Test Data Generation

Generate realistic test data using Bogus, test builders, and ABP data seeders.

When to Use

• Creating realistic fake data for tests
• Building complex object graphs for testing
• Seeding test databases
• Generating development data
• Creating deterministic test fixtures

Bogus Faker Setup

Installation

<PackageReference Include="Bogus" Version="35.*" />

Basic Faker Configuration

using Bogus;

public static class FakeDataGenerators
{
    // Set seed for reproducible tests
    public static int Seed { get; set; } = 12345;

    static FakeDataGenerators()
    {
        Randomizer.Seed = new Random(Seed);
    }

    public static Faker<Patient> PatientFaker => new Faker<Patient>()
        .RuleFor(p => p.Id, f => Guid.NewGuid())
        .RuleFor(p => p.FirstName, f => f.Name.FirstName())
        .RuleFor(p => p.LastName, f => f.Name.LastName())
        .RuleFor(p => p.Email, (f, p) => f.Internet.Email(p.FirstName, p.LastName))
        .RuleFor(p => p.Phone, f => f.Phone.PhoneNumber("###-###-####"))
        .RuleFor(p => p.DateOfBirth, f => f.Date.Past(80, DateTime.Today.AddYears(-18)))
        .RuleFor(p => p.Address, f => f.Address.FullAddress())
        .RuleFor(p => p.Status, f => f.PickRandom<PatientStatus>());

    public static Faker<Doctor> DoctorFaker => new Faker<Doctor>()
        .RuleFor(d => d.Id, f => Guid.NewGuid())
        .RuleFor(d => d.Name, f => $"Dr. {f.Name.FullName()}")
        .RuleFor(d => d.Specialization, f => f.PickRandom(
            "Cardiology", "Neurology", "Pediatrics", "Orthopedics"))
        .RuleFor(d => d.LicenseNumber, f => f.Random.AlphaNumeric(10).ToUpper())
        .RuleFor(d => d.YearsOfExperience, f => f.Random.Int(1, 40));

    public static Faker<Appointment> AppointmentFaker => new Faker<Appointment>()
        .RuleFor(a => a.Id, f => Guid.NewGuid())
        .RuleFor(a => a.DateTime, f => f.Date.Future(30))
        .RuleFor(a => a.Duration, f => TimeSpan.FromMinutes(f.PickRandom(15, 30, 45, 60)))
        .RuleFor(a => a.Notes, f => f.Lorem.Sentence())
        .RuleFor(a => a.Status, f => f.PickRandom<AppointmentStatus>());
}