public void IgnoreComments()
{
var lexer = new StringLexer ("# this is a comment");
var token = lexer.GetToken ();
Assert.AreEqual (TokenType.EOF, token.Type);
}
public void IgnoreWhitespace(string input)
{
var lexer = new StringLexer (input);
var token = lexer.GetToken ();
Assert.AreEqual (TokenType.EOF, token.Type);
}
public void ErrorOnUnfinishedSingleQuote()
{
var lexer = new StringLexer ("'foobar");
var ex = Assert.Throws<LexerException> (() => lexer.GetToken ());
Assert.That (NOT_CLOSED_RE.IsMatch (ex.Message));
}
public void LexFunctionCallDelimiters(string input, TokenType expected)
{
var lexer = new StringLexer (input);
var token = lexer.GetToken ();
Assert.AreEqual (expected, token.Type);
}
public void ErrorOnInvalidInput()
{
var lexer = new StringLexer ("{foobar}");
var ex = Assert.Throws<LexerException> (() => lexer.GetToken ());
Assert.That (INVALID_RE.IsMatch (ex.Message));
}
public void LexNumbers(string input, double expected)
{
var lexer = new StringLexer (input);
var token = lexer.GetToken ();
Assert.AreEqual (TokenType.Number, token.Type);
Assert.AreEqual (expected, token.GetNumberValue ());
token = lexer.GetToken ();
Assert.AreEqual (TokenType.EOF, token.Type);
}
public void ReturnEOF()
{
var lexer = new StringLexer ("");
var token = lexer.GetToken ();
Assert.AreEqual (TokenType.EOF, token.Type);
token = lexer.GetToken ();
Assert.AreEqual (TokenType.EOF, token.Type);
token = lexer.GetToken ();
Assert.AreEqual (TokenType.EOF, token.Type);
}
public void LexStrings(string input, string expected)
{
var lexer = new StringLexer (input);
var token = lexer.GetToken ();
Assert.AreEqual (TokenType.String, token.Type);
Assert.AreEqual (expected, token.GetStringValue ());
token = lexer.GetToken ();
Assert.AreEqual (TokenType.EOF, token.Type);
}
public void LexReferences(string input, string[] expected)
{
var lexer = new StringLexer (input);
var token = lexer.GetToken ();
Assert.AreEqual (TokenType.Reference, token.Type);
var segments = token.GetReferenceValue ();
Assert.AreEqual (expected.Length, segments.Length);
for (var i = 0; i < expected.Length; i += 1)
{
Assert.AreEqual (expected [i], segments [i]);
}
}
