Nice builder pattern to for building mock objects using Actions

MockBuilder.cs

internal class MockBuilder<TBuilder, TMock>
        where TBuilder : MockBuilder<TBuilder, TMock>, new()
        where TMock : class, new()
    {
        private IList<Action<TMock>> _buildSteps;

        protected MockBuilder()
        {
            _buildSteps = Enumerable.Empty<Action<TMock>>().ToList();
        }

        protected TBuilder WithBuildStep(params Action<TMock>[] newBuildSteps)
        {
            var builder = new TBuilder { _buildSteps = _buildSteps.AddRange(newBuildSteps).ToList() };
            return builder;
        }

        public TMock Build()
        {
            var mockObject = new TMock();
            foreach (var action in _buildSteps)
            {
                action(mockObject);
            }

            return mockObject;
        }
    }

SimpleMockBuilder

internal class PersonMockBuilder : MockBuilder<PersonMockBuilder, Simple>
{
  public PersonMockBuilder WithName(string title, string firstName, string surname)
  {
    return WithBuildStep(p => p.Title = title)
      .WithBuildStep(p => p.FirstName = firstName)
      .WithBuildStep(p => p.Surname = surname);
  }
}