public void BackspaceRemovesNothingOnEmptyCurrentLine()
        {
            var terminal = new ClientTerminal();

            terminal.Backspace();

            Assert.AreEqual("", terminal.GetCurrentLine());
        }
        public void BackspaceRemovesOneCharacterFromCurrentLine()
        {
            var terminal = new ClientTerminal();

            terminal.AppendToCurrentLine("world");
            terminal.Backspace();

            Assert.AreEqual("worl", terminal.GetCurrentLine());
        }