tests/HTMLPurifier/AttrDef/LangTest.php

   1 <?php
   2
   3 class HTMLPurifier_AttrDef_LangTest extends HTMLPurifier_AttrDefHarness
   4 {
   5
   6     function test() {
   7
   8         $this->def = new HTMLPurifier_AttrDef_Lang();
   9
  10         // basic good uses
  11         $this->assertDef('en');
  12         $this->assertDef('en-us');
  13
  14         $this->assertDef(' en ', 'en'); // trim
  15         $this->assertDef('EN', 'en'); // case insensitivity
  16
  17         // (thanks Eugen Pankratz for noticing the typos!)
  18         $this->assertDef('En-Us-Edison', 'en-us-edison'); // complex ci
  19
  20         $this->assertDef('fr en', false); // multiple languages
  21         $this->assertDef('%', false); // bad character
  22
  23         // test overlong language according to syntax
  24         $this->assertDef('thisistoolongsoitgetscut', false);
  25
  26         // primary subtag rules
  27             // I'm somewhat hesitant to allow x and i as primary language codes,
  28             // because they usually are never used in real life. However,
  29             // theoretically speaking, having them alone is permissable, so
  30             // I'll be lenient. No XML parser is going to complain anyway.
  31         $this->assertDef('x');
  32         $this->assertDef('i');
  33             // real world use-cases
  34         $this->assertDef('x-klingon');
  35         $this->assertDef('i-mingo');
  36             // because the RFC only defines two and three letter primary codes,
  37             // anything with a length of four or greater is invalid, despite
  38             // the syntax stipulation of 1 to 8 characters. Because the RFC
  39             // specifically states that this reservation is in order to allow
  40             // for future versions to expand, the adoption of a new RFC will
  41             // require these test cases to be rewritten, even if backwards-
  42             // compatibility is largely retained (i.e. this is not forwards
  43             // compatible)
  44         $this->assertDef('four', false);
  45             // for similar reasons, disallow any other one character language
  46         $this->assertDef('f', false);
  47
  48         // second subtag rules
  49             // one letter subtags prohibited until revision. This is, however,
  50             // less volatile than the restrictions on the primary subtags.
  51             // Also note that this test-case tests fix-behavior: chop
  52             // off subtags until you get a valid language code.
  53         $this->assertDef('en-a', 'en');
  54             // however, x is a reserved single-letter subtag that is allowed
  55         $this->assertDef('en-x', 'en-x');
  56             // 2-8 chars are permitted, but have special meaning that cannot
  57             // be checked without maintaining country code lookup tables (for
  58             // two characters) or special registration tables (for all above).
  59         $this->assertDef('en-uk', true);
  60
  61         // further subtag rules: only syntactic constraints
  62         $this->assertDef('en-us-edison');
  63         $this->assertDef('en-us-toolonghaha', 'en-us');
  64         $this->assertDef('en-us-a-silly-long-one');
  65
  66         // rfc 3066 stipulates that if a three letter and a two letter code
  67         // are available, the two letter one MUST be used. Without a language
  68         // code lookup table, we cannot implement this functionality.
  69
  70         // although the HTML protocol, technically speaking, allows you to
  71         // omit language tags, this implicitly means that the parent element's
  72         // language is the one applicable, which, in some cases, is incorrect.
  73         // Thus, we allow und, only slightly defying the RFC's SHOULD NOT
  74         // designation.
  75         $this->assertDef('und');
  76
  77         // because attributes only allow one language, mul is allowed, complying
  78         // with the RFC's SHOULD NOT designation.
  79         $this->assertDef('mul');
  80
  81     }
  82
  83 }
  84
  85 // vim: et sw=4 sts=4