public void SecureFile_WipeAndDelete()
{
// Verify that a file can be wiped and deleted. Note that there's
// no reasonable way to automate a check to see that the file
// was actually wiped. It's best to step through the code manually
// to verify this.
var path = Path.GetTempFileName();
using (var fs = new FileStream(path, FileMode.Create, FileAccess.ReadWrite))
{
for (int i = 0; i < 1000000; i++)
{
fs.WriteByte((byte)i);
}
}
SecureFile.WipeAndDelete(path, 3);
Assert.IsFalse(System.IO.File.Exists(path));
// Verify that calling WipeAndDelete() on a non-existant file
// does not throw an exception.
SecureFile.WipeAndDelete(path, 3);
}