public void Read_NonAsciiChars()
        {
            IInputReader stream = new StringInputReader("éすå");

            Assert.AreEqual('é', stream.Read());
            Assert.AreEqual('す', stream.Read());
            Assert.AreEqual('å', stream.Read());
        }
        public void Read_ReadsCharAtPosition()
        {
            IInputReader stream = new StringInputReader("abc");

            stream.Read();
            char result = (char)stream.Read();

            Assert.AreEqual('b', result);
        }
        public void GetPosition_ReadNewLine()
        {
            IInputReader stream = new StringInputReader("abc\nxyz");

            stream.Read();
            stream.Read();
            stream.Read();
            stream.Read();

            Position position = stream.GetPosition();

            Assert.AreEqual(4, position.Offset, "offset");
            Assert.AreEqual(2, position.Line, "Line");
            Assert.AreEqual(1, position.Column, "Column");
        }
        public void Read_NewReader_ReturnsFirstChar()
        {
            IInputReader stream = new StringInputReader("abc");

            char result = (char)stream.Read();

            Assert.AreEqual('a', result);
        }
        public void EndOfStream_CharsLeftToRead_ReturnsFalse()
        {
            IInputReader stream = new StringInputReader("abc");

            stream.Read();

            Assert.IsFalse(stream.EndOfStream);
        }
        public void EndOfStream_NoCharsLeftToRead_ReturnsTrue()
        {
            IInputReader stream = new StringInputReader("a");

            stream.Read();

            Assert.IsTrue(stream.EndOfStream);
        }
        public void Seek_UpdatesPosition()
        {
            IInputReader stream   = new StringInputReader("abc");
            Position     position = stream.GetPosition();

            stream.Read();
            stream.Read();
            stream.Seek(position);

            Position newPosition = stream.GetPosition();

            Assert.AreEqual(position, newPosition);

            char result = (char)stream.Read();

            Assert.AreEqual('a', result);
        }
        public void Read_EndOfString_ReturnsCharNull()
        {
            IInputReader stream = new StringInputReader("");

            char result = stream.Read();

            Assert.AreEqual('\0', result);
        }
        public void GetPosition_Read_DoesNotUpdateReturnedPosition()
        {
            IInputReader stream   = new StringInputReader("abc");
            Position     position = stream.GetPosition();

            stream.Read();

            Assert.AreEqual(0, position.Offset, "Offset");
            Assert.AreEqual(1, position.Line, "Line");
            Assert.AreEqual(1, position.Column, "Column");
        }