public void testFileHandler_readFileAsArray_valid()
        {
            fileHandler fh = new file_handler.fileHandler();

            fh.getFileName("4x4.txt");
            Assert.AreEqual("4 2 - 1", fh.readFileAsArray()[0]);
            Assert.AreEqual("- - - 2", fh.readFileAsArray()[1]);
            Assert.AreEqual("3 - 2 -", fh.readFileAsArray()[2]);
            Assert.AreEqual("- 4 - 3", fh.readFileAsArray()[3]);
        }
        public void testFileHandler_readFileAsArray_invalid()
        {
            fileHandler fh = new file_handler.fileHandler();

            Assert.AreSame(new String[] { }.GetType(), fh.readFileAsArray().GetType());
        }