it('should generate items whose productions belong', function() {
var productions = [
new Production('stmt', [ 'if', 'x', '{', 'stmt', '}' ]),
new Production('stmt', [ 'id', '=', 'x' ])
], items = Grammar.items(productions);
expect(items).to.all.satisfy(function(e) {
return _.contains(productions, e.production);
});
});
it('should generate the correct number of items', function() {
var production = new Production('stmt', [ 'if', 'x', '{', 'stmt', '}' ]),
items = Grammar.items([production]);
expect(items).to.have.length(production.derives.length+1);
});