tests/rrr.js

   1 /*global require, it, assert, assertEqual, assertNot */
   2 /*jshint -W085 */ // "Don't use 'with'."
   3
   4 var JS = this.JS || require('jstest');
   5 var rrr = require('../rrr');
   6
   7 var AB = new rrr.Grammar({
   8     A: ["A"],
   9     B: ["B"],
  10     AB: ["<A> <B>"],
  11 }, "<AB >+");
  12
  13 var DIGITS = new rrr.Grammar({
  14     Digits: ["<digit>+"],
  15     digit: "0123456789"
  16 });
  17
  18 JS.Test.describe('rrr AB', function () { with (this) {
  19     it("simply expands", function () { with (this) {
  20         assertEqual("A", AB.expand("<A>"));
  21         assertEqual("B", AB.expand("<B>"));
  22         assertEqual("A B", AB.expand("<AB>"));
  23     }});
  24     it("expands multiple tokens", function () { with (this) {
  25         assertEqual("A B A", AB.expand("<A> <B> <A>"));
  26     }});
  27     it("expands multiple times", function () { with (this) {
  28         assertEqual("AAAAA", AB.expand("<A>{5}"));
  29     }});
  30     it("expands random times", function () { with (this) {
  31         var r = [];
  32         for (var i = 0; i < 1000; ++i)
  33             r.push(AB.expand("<A>{1,10}"));
  34         assert(r.indexOf("") < 0);
  35         assert(r.indexOf("A") >= 0);
  36         assert(r.indexOf("AA") >= 0);
  37         assert(r.indexOf("AAA") >= 0);
  38         assert(r.indexOf("AAAA") >= 0);
  39         assert(r.indexOf("AAAAA") >= 0);
  40         assert(r.indexOf("AAAAAA") >= 0);
  41         assert(r.indexOf("AAAAAAA") >= 0);
  42         assert(r.indexOf("AAAAAAAA") >= 0);
  43         assert(r.indexOf("AAAAAAAAA") >= 0);
  44         assert(r.indexOf("AAAAAAAAAA") >= 0);
  45         assert(r.indexOf("AAAAAAAAAAA") < 0);
  46     }});
  47     it("expands repeatedly", function () { with (this) {
  48         var r = [];
  49         for (var i = 0; i < 100; ++i)
  50             r.push(AB.expand());
  51         assert(r.indexOf("") < 0);
  52         assert(r.indexOf("A B") >= 0);
  53         assert(r.indexOf("A B A B") >= 0);
  54     }});
  55     it("expands repetitions differently", function () { with (this) {
  56         var r = DIGITS.expand("<digit>{500}");
  57         assert(~r.indexOf("0"));
  58         assert(~r.indexOf("1"));
  59         assert(~r.indexOf("2"));
  60         assert(~r.indexOf("3"));
  61         assert(~r.indexOf("4"));
  62         assert(~r.indexOf("5"));
  63         assert(~r.indexOf("6"));
  64         assert(~r.indexOf("7"));
  65         assert(~r.indexOf("8"));
  66         assert(~r.indexOf("9"));
  67     }});
  68 }});