public void ReadSuccess(string input)
{
var grammar = new CoreGrammar();
grammar.Initialize();
var sut = grammar.Rule("LWSP");
using (var scanner = new TextScanner(new StringTextSource(input)))
{
var result = sut.Read(scanner);
Assert.Equal(input, result.Text);
}
}
public void CanReadUppercaseAsciiLetters(string input)
{
var grammar = new CoreGrammar();
grammar.Initialize();
var sut = grammar.Rule("ALPHA");
using (var scanner = new TextScanner(new StringTextSource(input)))
{
var result = sut.Read(scanner);
Assert.Equal(input, result.Text);
}
}
public void ReadSuccess(byte input, byte expected)
{
var grammar = new CoreGrammar();
grammar.Initialize();
var sut = grammar.Rule <Octet>("OCTET");
using (var stream = new MemoryStream(new[] { input }))
using (var scanner = new TextScanner(new StreamTextSource(stream)))
{
var result = sut.Read(scanner);
Assert.Equal(expected, result.Value);
}
}
public void CannotReadNegativeOne()
{
var input = "-1";
var grammar = new CoreGrammar();
grammar.Initialize();
var sut = grammar.Rule("BIT");
using (var scanner = new TextScanner(new StringTextSource(input)))
{
var result = sut.Read(scanner);
Assert.Null(result);
}
}
public void CanReadZero()
{
var input = "0";
var grammar = new CoreGrammar();
grammar.Initialize();
var sut = grammar.Rule("BIT");
using (var scanner = new TextScanner(new StringTextSource(input)))
{
var result = sut.Read(scanner);
Assert.Equal(input, result.Text);
}
}
public void CannotReadPureText()
{
// Pretend that we are reading text from a piece of paper instead of from computer memory
// I call this pure text: the text source is not binary encoded
// The OCTET rule should not be used with pure text sources, because that just makes no sense
// For that reason, I changed the OCTET lexer to read nothing unless the text source implements IBinaryDataSource
var grammar = new CoreGrammar();
grammar.Initialize();
var sut = grammar.Rule("OCTET");
using (var scanner = new TextScanner(new StringTextSource("System.String")))
{
var result = sut.Read(scanner);
Assert.Null(result);
}
}