public void FileInfoWrapper_CreateDelete() { var fileName = "c:\\FileInfoWrapper_Construct.txt"; var fileWrapper = new FileWrapper(); fileWrapper.WriteAllText(fileName, "FileInfoWrapper_Construct test test"); IFileInfo fileInfo = new FileInfoWrapper(new FileInfo(fileName)); var createTime = fileInfo.CreationTime; fileInfo.Delete(); Assert.IsTrue(createTime > (DateTime.Now.Subtract(new TimeSpan(0, 0, 30)))); Assert.IsFalse(fileWrapper.Exists(fileName)); }