var Scanner = HTMLTools.Scanner;
var getCharacterReference = HTMLTools.Parse.getCharacterReference;

Tinytest.add("html-tools - entities", function (test) {
  var succeed = function (input, match, codepoints) {
    if (typeof input === 'string')
      input = {input: input};

    // match arg is optional; codepoints is never a string
    if (typeof match !== 'string') {
      codepoints = match;
      match = input.input;
    }

    var scanner = new Scanner(input.input);
    var result = getCharacterReference(scanner, input.inAttribute, input.allowedChar);
    test.isTrue(result);
    test.equal(scanner.pos, match.length);
    test.equal(result, {
      t: 'CharRef',
      v: match,
      cp: _.map(codepoints,
                function (x) { return (typeof x === 'string' ?
                                       x.charCodeAt(0) : x); })
    });
  };

  var ignore = function (input) {
    if (typeof input === 'string')
      input = {input: input};

    var scanner = new Scanner(input.input);
    var result = getCharacterReference(scanner, input.inAttribute, input.allowedChar);
    test.isFalse(result);
    test.equal(scanner.pos, 0);
  };

  var fatal = function (input, messageContains) {
    if (typeof input === 'string')
      input = {input: input};

    var scanner = new Scanner(input.input);
    var error;
    try {
      getCharacterReference(scanner, input.inAttribute, input.allowedChar);
    } catch (e) {
      error = e;
    }
    test.isTrue(error);
    if (error)
      test.isTrue(messageContains && error.message.indexOf(messageContains) >= 0, error.message);
  };

  ignore('a');
  ignore('&');
  ignore('&&');
  ignore('&\t');
  ignore('& ');
  fatal('&#', 'Invalid numerical character reference starting with &#');
  ignore('&a');
  fatal('&a;', 'Invalid character reference: &a;');
  ignore({input: '&"', allowedChar: '"'});
  ignore('&"');

  succeed('>', ['>']);
  fatal('&gt', 'Character reference requires semicolon');
  ignore('&aaa');
  fatal('&gta', 'Character reference requires semicolon');
  ignore({input: '&gta', inAttribute: true});
  fatal({input: '&gt=', inAttribute: true}, 'Character reference requires semicolon: &gt');

  succeed('>;', '>', ['>']);

  fatal('&asdflkj;', 'Invalid character reference: &asdflkj;');
  fatal('&A0asdflkj;', 'Invalid character reference: &A0asdflkj;');
  ignore('&A0asdflkj');

  succeed('𝕫', [120171]);
  succeed('∾̳', [8766, 819]);

  succeed('
', [10]);
  fatal('&#10', 'Invalid numerical character reference starting with &#');
  fatal('&#xg;', 'Invalid numerical character reference starting with &#');
  fatal('&#;', 'Invalid numerical character reference starting with &#');
  fatal('&#a;', 'Invalid numerical character reference starting with &#');
  fatal('&#a', 'Invalid numerical character reference starting with &#');
  fatal('&#z', 'Invalid numerical character reference starting with &#');
  succeed('
', [10]);
  fatal('�', 'Numerical character reference too large: 1000000000010');
  succeed('
', [10]);
  fatal('�', 'Numerical character reference too large: 0x100000000000a');
  succeed('
', [10]);
  succeed('
', [10]);
  succeed('
', [10]);
  succeed('
', [10]);
  succeed('
', [10]);

  fatal('�', 'Illegal codepoint in numerical character reference: �');
  fatal('�', 'Illegal codepoint in numerical character reference: �');

  fatal('', 'Illegal codepoint in numerical character reference: ');
  succeed('', [12]);
  fatal('', 'Illegal codepoint in numerical character reference: ');
  succeed('', [12]);

  fatal('', 'Illegal codepoint in numerical character reference');
  fatal('', 'Illegal codepoint in numerical character reference');
  succeed('􏿽', [0x10fffd]);

  fatal('', 'Illegal codepoint in numerical character reference');
  fatal('', 'Illegal codepoint in numerical character reference');
  succeed('􏿽', [0x10fffd]);

});