Test resource helper class

TestDataManager.cs

using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Reflection;
using System.Resources;
using System.Text;

namespace Std.TestingSupport
{
	public class TestDataManager
	{
		private readonly Assembly _sourceAssembly;
		private readonly List<TestResource> _resources;

		class TestResource
		{
			public string ResourceKey { get; private set; }
			public string Name { get; private set; }
			public string Text { get; private set; }
                        public byte[] Data { get; private set; }
			public bool Loaded { get; private set; }

			public TestResource(string resourceKey, string name)
			{
				ResourceKey = resourceKey;
				Name = name;
			}

			public void SetText(string text)
			{
				Loaded = true;
				Text = text;
			}

		    public void SetData(byte[] data)
		    {
		        Loaded = true;
		        Data = data;
		    }
		}

        private const string ResourceBaseName = /* full namespace path to your test files, which is assy namespace + directory structure relative to project file */

		public TestDataManager()
		{
			_sourceAssembly = Assembly.GetExecutingAssembly();
			_resources = _sourceAssembly.GetManifestResourceNames()
				.Select(s => new TestResource(s, s.ToLowerInvariant())).ToList();
		}

        public byte[] LoadBinaryFile(string name)
        {
        name = (ResourceBaseName + name).ToLowerInvariant();

        var resource = _resources.FirstOrDefault(r => r.Name == name);
        if (resource == null)
        {
            throw new MissingManifestResourceException(name);
        }

        if (!resource.Loaded)
        {
            using (var rstream = _sourceAssembly.GetManifestResourceStream(resource.ResourceKey))
            {
            var size = (int) rstream.Length;

            var data = new byte[size];
            rstream.Read(data, 0, size);
            resource.SetData(data);
            }
        }

        return resource.Data;
        }

            public string LoadTextFile(string name)
        {
            name = (ResourceBaseName + name).ToLowerInvariant();

            var resource = _resources.FirstOrDefault(r => r.Name == name);
            if (resource == null)
            {
                throw new MissingManifestResourceException(name);
            }

            if (!resource.Loaded)
            {
                using (var rstream = _sourceAssembly.GetManifestResourceStream(resource.ResourceKey))
                using (var reader = new StreamReader(rstream, Encoding.UTF8))
                {
                    var data = reader.ReadToEnd();
                    resource.SetText(data);
                }
            }

            return resource.Text;
        }
	}
}