public static void then_should_print_out_floating_map_of_a_for_input_1a()
            {
                // Arrange
                const string inputString    = "1a";
                var          outputDevice   = new StringOutputDevice();
                var          inputConverter = new InputConverter(outputDevice, inputString);

                // Act
                inputConverter.Convert();

                // Assert
                Assert.That(outputDevice.Output, Is.EqualTo(" +"));
            }
            public static void then_should_print_out_the_map_for_i()
            {
                // Arrange
                const string inputString    = "i";
                var          outputDevice   = new StringOutputDevice();
                var          inputConverter = new InputConverter(outputDevice, inputString);

                // Act
                inputConverter.Convert();

                // Assert
                Assert.That(outputDevice.Output, Is.EqualTo("++--***.."));
            }