[Test]
public void SaveAndLoadFromMemoryStream()
{
    var entity = new Entity2D(Rectangle.HalfCentered);
    entity.OnDraw<MockDrawBehavior>();
    Assert.AreEqual(0, entity.NumberOfComponents);
    var data = BinaryDataExtensions.SaveToMemoryStream(entity);
    byte[] savedBytes = data.ToArray();
    int bytesForName = "Entity2D".Length + 1;
    const int VersionNumberBytes = 4;
    int componentBytes = 1 + "Rectangle".Length + 1 + 16 + "IsVisible".Length + 1 + 1 + 2;
    const int BehaviorBytes = 27;
    Assert.AreEqual(bytesForName + VersionNumberBytes + componentBytes + BehaviorBytes,
        savedBytes.Length);
    var loadedEntity = data.CreateFromMemoryStream() as Entity2D;
    Assert.AreEqual(0, loadedEntity.NumberOfComponents);
    Assert.IsTrue(loadedEntity.IsActive);
    Assert.AreEqual(Rectangle.HalfCentered, loadedEntity.DrawArea);
    Assert.AreEqual(1, loadedEntity.GetDrawBehaviors().Count);
    Assert.AreEqual("MockDrawBehavior",
        loadedEntity.GetDrawBehaviors()[0].GetShortNameOrFullNameIfNotFound());
}

[Test]
public void SaveAndLoadFromMemoryStream()
{
    var entity = new Entity2D(Rectangle.HalfCentered);
    entity.OnDraw<MockDrawBehavior>();
    Assert.AreEqual(0, entity.NumberOfComponents);
    var data = BinaryDataExtensions.SaveToMemoryStream(entity);
    byte[] savedBytes = data.ToArray();
    int bytesForName = "Entity2D".Length + 1;
    const int VersionNumberBytes = 4;
    int componentBytes = 1 + "Rectangle".Length + 1 + 16 + "IsVisible".Length + 1 + 1 + 2;
    const int BehaviorBytes = 27;
    Assert.AreEqual(bytesForName + VersionNumberBytes + componentBytes + BehaviorBytes,
        savedBytes.Length);
    var loadedEntity = data.CreateFromMemoryStream() as Entity2D;
    Assert.AreEqual(0, loadedEntity.NumberOfComponents);
    Assert.IsTrue(loadedEntity.IsActive);
    Assert.AreEqual(Rectangle.HalfCentered, loadedEntity.DrawArea);
    Assert.AreEqual(1, loadedEntity.GetDrawBehaviors().Count);
    Assert.AreEqual("MockDrawBehavior",
        loadedEntity.GetDrawBehaviors()[0].GetShortNameOrFullNameIfNotFound());
}