int repeatCount = 10;
string value = "hello world.";
string repeated = string.Join(value, new string[repeatCount + 1]);
Console.WriteLine(repeated);
There is some slight code duplication (from the NUnit framework), but it works with 1.X and 2.0 frameworks...
ObjectGraphAssert and ObjectGraphFixture: Here is the zip.
If you create a failing test, please pass it on so I can update my code.
Enjoy