public void TextNavigator_SkipWhitespace_1()
{
TextNavigator navigator = new TextNavigator(" \t\r\nABC ");
Assert.IsTrue(navigator.SkipWhitespace());
Assert.AreEqual('A', navigator.ReadChar());
navigator.ReadChar();
navigator.ReadChar();
Assert.IsFalse(navigator.SkipWhitespace());
Assert.IsTrue(navigator.IsEOF);
}
public void TextNavigator_ReadChar_1()
{
const string text = "ABC";
TextNavigator navigator = new TextNavigator(text);
Assert.AreEqual('A', navigator.ReadChar());
Assert.AreEqual('B', navigator.ReadChar());
Assert.AreEqual('C', navigator.ReadChar());
Assert.AreEqual(TextNavigator.EOF, navigator.ReadChar());
Assert.AreEqual(TextNavigator.EOF, navigator.ReadChar());
}
public void TextNavigator_IsWhiteSpace_1()
{
const string text = " A\t";
TextNavigator navigator = new TextNavigator(text);
Assert.IsTrue(navigator.IsWhiteSpace());
navigator.ReadChar();
Assert.IsFalse(navigator.IsWhiteSpace());
navigator.ReadChar();
Assert.IsTrue(navigator.IsWhiteSpace());
}
public void TextNavigator_IsSeparator_1()
{
const string text = "\u2028A ";
TextNavigator navigator = new TextNavigator(text);
Assert.IsTrue(navigator.IsSeparator());
navigator.ReadChar();
Assert.IsFalse(navigator.IsSeparator());
navigator.ReadChar();
Assert.IsTrue(navigator.IsSeparator());
}
public void TextNavigator_IsSymbol_1()
{
const string text = "$A+";
TextNavigator navigator = new TextNavigator(text);
Assert.IsTrue(navigator.IsSymbol());
navigator.ReadChar();
Assert.IsFalse(navigator.IsSymbol());
navigator.ReadChar();
Assert.IsTrue(navigator.IsSymbol());
}
public void TextNavigator_IsPunctuation_1()
{
const string text = ".A,";
TextNavigator navigator = new TextNavigator(text);
Assert.IsTrue(navigator.IsPunctuation());
navigator.ReadChar();
Assert.IsFalse(navigator.IsPunctuation());
navigator.ReadChar();
Assert.IsTrue(navigator.IsPunctuation());
}
public void TextNavigator_IsNumber_1()
{
const string text = "1+²";
TextNavigator navigator = new TextNavigator(text);
Assert.IsTrue(navigator.IsNumber());
navigator.ReadChar();
Assert.IsFalse(navigator.IsNumber());
navigator.ReadChar();
Assert.IsTrue(navigator.IsNumber());
}
public void TextNavigator_IsLetterOrDigit_1()
{
const string text = "A_1";
TextNavigator navigator = new TextNavigator(text);
Assert.IsTrue(navigator.IsLetterOrDigit());
navigator.ReadChar();
Assert.IsFalse(navigator.IsLetterOrDigit());
navigator.ReadChar();
Assert.IsTrue(navigator.IsLetterOrDigit());
}
public void TextNavigator_SkipWhitespaceAndPunctuation_1()
{
TextNavigator navigator = new TextNavigator(" \t,\r\nABC. ");
Assert.IsTrue(navigator.SkipWhitespaceAndPunctuation());
Assert.AreEqual('A', navigator.ReadChar());
navigator.ReadChar();
navigator.ReadChar();
Assert.IsFalse(navigator.SkipWhitespaceAndPunctuation());
Assert.IsTrue(navigator.IsEOF);
}
public void TextNavigator_SkipWhileNot_1()
{
char[] good = { 'A', 'B' };
TextNavigator navigator = new TextNavigator("123ABC");
Assert.IsTrue(navigator.SkipWhileNot(good));
Assert.AreEqual('A', navigator.ReadChar());
Assert.IsTrue(navigator.SkipWhileNot(good));
Assert.AreEqual('B', navigator.ReadChar());
Assert.IsFalse(navigator.SkipWhileNot(good));
Assert.AreEqual(TextNavigator.EOF, navigator.ReadChar());
}
public void TextNavigator_RestorePosition_1()
{
TextNavigator navigator = new TextNavigator("Hello, world!");
TextPosition saved = navigator.SavePosition();
navigator.ReadChar();
navigator.RestorePosition(saved);
Assert.AreEqual(saved.Position, navigator.Position);
Assert.AreEqual(saved.Line, navigator.Line);
Assert.AreEqual(saved.Column, navigator.Column);
Assert.AreEqual('H', navigator.ReadChar());
}
public void TextNavigator_PeekString_1()
{
const string text = "ABC";
TextNavigator navigator = new TextNavigator(text);
Assert.AreEqual("AB", navigator.PeekString(2));
navigator.ReadChar();
Assert.AreEqual("BC", navigator.PeekString(2));
navigator.ReadChar();
Assert.AreEqual("C", navigator.PeekString(2));
navigator.ReadChar();
Assert.IsNull(navigator.PeekString(2));
}
public void TextNavigator_LookAhead_2()
{
const string text = "ABC";
TextNavigator navigator = new TextNavigator(text);
Assert.AreEqual('C', navigator.LookAhead(2));
navigator.ReadChar();
Assert.AreEqual(TextNavigator.EOF, navigator.LookAhead(2));
navigator.ReadChar();
Assert.AreEqual(TextNavigator.EOF, navigator.LookAhead(2));
navigator.ReadChar();
Assert.AreEqual(TextNavigator.EOF, navigator.LookAhead(2));
}
public void TextNavigator_ReadUntil_4()
{
char[] stop = { ']', '>' };
TextNavigator navigator = new TextNavigator("ABC>]DEF");
Assert.AreEqual("ABC", navigator.ReadUntil(stop));
navigator.ReadChar();
Assert.AreEqual(string.Empty, navigator.ReadUntil(stop));
navigator.ReadChar();
Assert.AreEqual("DEF", navigator.ReadUntil(stop));
navigator.ReadChar();
Assert.IsNull(navigator.ReadUntil(stop));
}
public void TextNavigator_GetRemainingText_1()
{
const string text = "ABC";
TextNavigator navigator = new TextNavigator(text);
Assert.AreEqual(text, navigator.GetRemainingText());
navigator.ReadChar();
Assert.AreEqual("BC", navigator.GetRemainingText());
navigator.ReadChar();
Assert.AreEqual("C", navigator.GetRemainingText());
navigator.ReadChar();
Assert.IsNull(navigator.GetRemainingText());
}
public void TextNavigator_Position_1()
{
const string text = "ABC";
TextNavigator navigator = new TextNavigator(text);
Assert.AreEqual(0, navigator.Position);
navigator.ReadChar();
Assert.AreEqual(1, navigator.Position);
navigator.ReadChar();
Assert.AreEqual(2, navigator.Position);
navigator.ReadChar();
Assert.AreEqual(3, navigator.Position);
navigator.ReadChar();
Assert.AreEqual(3, navigator.Position);
}
public void TextNavigator_FromFile_2()
{
string fileName = Path.Combine(TestDataPath, "record.txt");
TextNavigator navigator = TextNavigator.FromFile(fileName, Encoding.UTF8);
Assert.AreEqual('#', navigator.ReadChar());
}
public void TextNavigator_PeekUntil_1()
{
const string text = "ABC]DEF";
TextNavigator navigator = new TextNavigator(text);
Assert.AreEqual("ABC", navigator.PeekUntil(']'));
navigator.ReadChar();
Assert.AreEqual("BC", navigator.PeekUntil(']'));
navigator.ReadChar();
navigator.ReadChar();
Assert.AreEqual(string.Empty, navigator.PeekUntil(']'));
navigator.ReadChar();
Assert.AreEqual("DEF", navigator.PeekUntil(']'));
navigator.Move(3);
Assert.IsNull(navigator.PeekUntil(']'));
}
public void TextNavigator_SkipNonWord_2()
{
TextNavigator navigator = new TextNavigator(". (<ABC");
Assert.IsTrue(navigator.SkipNonWord('<', '>'));
Assert.AreEqual('<', navigator.ReadChar());
}
public void TextNavigator_SkipTo_1()
{
TextNavigator navigator = new TextNavigator("123ABC");
Assert.IsTrue(navigator.SkipTo('A'));
Assert.AreEqual('A', navigator.ReadChar());
Assert.IsFalse(navigator.SkipTo('A'));
}
public void TextNavigator_Column_1()
{
const string text = "ABC";
TextNavigator navigator = new TextNavigator(text);
Assert.AreEqual(1, navigator.Column);
navigator.ReadChar();
Assert.AreEqual(2, navigator.Column);
}
public void TextNavigator_SkipWhile_1()
{
TextNavigator navigator = new TextNavigator("111ABC");
Assert.IsTrue(navigator.SkipWhile('1'));
Assert.AreEqual('A', navigator.ReadChar());
navigator.Move(2);
Assert.IsFalse(navigator.SkipWhile('1'));
}
public void TextNavigator_SkipRange_1()
{
TextNavigator navigator = new TextNavigator("123ABC");
Assert.IsTrue(navigator.SkipRange('0', '9'));
Assert.AreEqual('A', navigator.ReadChar());
navigator.Move(2);
Assert.IsFalse(navigator.SkipRange('0', '9'));
}
public void TextNavigator_SkipPunctuation_1()
{
TextNavigator navigator = new TextNavigator(".,ABC");
Assert.IsTrue(navigator.SkipPunctuation());
Assert.AreEqual('A', navigator.ReadChar());
navigator.Move(2);
Assert.IsFalse(navigator.SkipPunctuation());
}
public void TextNavigator_SkipControl_1()
{
TextNavigator navigator = new TextNavigator("\t\tABC");
Assert.IsTrue(navigator.SkipControl());
Assert.AreEqual('A', navigator.ReadChar());
navigator.Move(2);
Assert.IsFalse(navigator.SkipControl());
}
public void TextNavigator_SkipChar_2()
{
TextNavigator navigator = new TextNavigator("123456");
Assert.IsTrue(navigator.SkipChar(3));
Assert.AreEqual('4', navigator.ReadChar());
Assert.IsFalse(navigator.SkipChar(3));
Assert.IsTrue(navigator.IsEOF);
}
public void TextNavigator_SkipWhile_2()
{
char[] digits = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9' };
TextNavigator navigator = new TextNavigator("314ABC");
Assert.IsTrue(navigator.SkipWhile(digits));
Assert.AreEqual('A', navigator.ReadChar());
navigator.Move(2);
Assert.IsFalse(navigator.SkipWhile(digits));
}
public void TextNavigator_SkipChar_3()
{
char[] allowed = { '1', '2' };
TextNavigator navigator = new TextNavigator("123456");
Assert.IsTrue(navigator.SkipChar(allowed));
Assert.IsTrue(navigator.SkipChar(allowed));
Assert.IsFalse(navigator.SkipChar(allowed));
Assert.AreEqual('3', navigator.ReadChar());
}
public void TextNavigator_SkipChar_1()
{
TextNavigator navigator = new TextNavigator("111234");
Assert.IsTrue(navigator.SkipChar('1'));
Assert.IsTrue(navigator.SkipChar('1'));
Assert.IsTrue(navigator.SkipChar('1'));
Assert.AreEqual('2', navigator.ReadChar());
Assert.IsFalse(navigator.SkipChar('1'));
}
public void TextNavigator_ReadEscapedUntil_2()
{
const string text = "AB[tC";
TextNavigator navigator = new TextNavigator(text);
string expected = "ABtC";
string actual = navigator.ReadEscapedUntil('[', ']');
Assert.AreEqual(expected, actual);
Assert.AreEqual(TextNavigator.EOF, navigator.ReadChar());
}
