public void DeleteFileAndEmptyParentDirectoriesCorrectly()
        {
            // Arrange
            var fileSystem = new MockFileSystem("x:\\");
            fileSystem.AddFile("foo\\bar\\hell\\x.txt");

            // Act
            fileSystem.DeleteFileAndParentDirectoriesIfEmpty("foo\\bar\\hell\\x.txt");

            // Assert
            Assert.False(fileSystem.FileExists("foo\\bar\\hell\\x.txt"));
            Assert.False(fileSystem.DirectoryExists("foo"));
            Assert.False(fileSystem.DirectoryExists("foo\\bar"));
            Assert.False(fileSystem.DirectoryExists("foo\\bar\\hell"));
        }