public void TokenTest(Kind kind, string src, int start, int end)
{
var lexer = new Lexer(src);
var token = lexer.Read(null);
SigoAssert.Equal(kind, token.Kind);
SigoAssert.Equal(start, token.Start);
SigoAssert.Equal(end, token.End);
switch (kind)
{
case Kind.Number:
SigoAssert.Equal(double.Parse(src.Substring(start, end - start)), token.Value);
break;
case Kind.String:
SigoAssert.Equal(src.Substring(start + 1, end - start - 2), token.Value);
break;
default:
SigoAssert.Null(token.Value);
break;
}
}