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<?php

class HTMLPurifier_AttrDef_LangTest extends HTMLPurifier_AttrDefHarness

{

public function test()

{

$this->def = new HTMLPurifier_AttrDef_Lang();

// basic good uses

$this->assertDef('en');

$this->assertDef('en-us');

$this->assertDef(' en ', 'en'); // trim

$this->assertDef('EN', 'en'); // case insensitivity

// (thanks Eugen Pankratz for noticing the typos!)

$this->assertDef('En-Us-Edison', 'en-us-edison'); // complex ci

$this->assertDef('fr en', false); // multiple languages

$this->assertDef('%', false); // bad character

// test overlong language according to syntax

$this->assertDef('thisistoolongsoitgetscut', false);

// primary subtag rules

// I'm somewhat hesitant to allow x and i as primary language codes,

// because they usually are never used in real life. However,

// theoretically speaking, having them alone is permissable, so

// I'll be lenient. No XML parser is going to complain anyway.

$this->assertDef('x');

$this->assertDef('i');

// real world use-cases

$this->assertDef('x-klingon');

$this->assertDef('i-mingo');

// because the RFC only defines two and three letter primary codes,

// anything with a length of four or greater is invalid, despite

// the syntax stipulation of 1 to 8 characters. Because the RFC

// specifically states that this reservation is in order to allow

// for future versions to expand, the adoption of a new RFC will

// require these test cases to be rewritten, even if backwards-

// compatibility is largely retained (i.e. this is not forwards

// compatible)

$this->assertDef('four', false);

// for similar reasons, disallow any other one character language

$this->assertDef('f', false);

// second subtag rules

// one letter subtags prohibited until revision. This is, however,

// less volatile than the restrictions on the primary subtags.

// Also note that this test-case tests fix-behavior: chop

// off subtags until you get a valid language code.

$this->assertDef('en-a', 'en');

// however, x is a reserved single-letter subtag that is allowed

$this->assertDef('en-x', 'en-x');

// 2-8 chars are permitted, but have special meaning that cannot

// be checked without maintaining country code lookup tables (for

// two characters) or special registration tables (for all above).

$this->assertDef('en-uk', true);

// further subtag rules: only syntactic constraints

$this->assertDef('en-us-edison');

$this->assertDef('en-us-toolonghaha', 'en-us');

$this->assertDef('en-us-a-silly-long-one');

// rfc 3066 stipulates that if a three letter and a two letter code

// are available, the two letter one MUST be used. Without a language

// code lookup table, we cannot implement this functionality.

// although the HTML protocol, technically speaking, allows you to

// omit language tags, this implicitly means that the parent element's

// language is the one applicable, which, in some cases, is incorrect.

// Thus, we allow und, only slightly defying the RFC's SHOULD NOT

// designation.

$this->assertDef('und');

// because attributes only allow one language, mul is allowed, complying

// with the RFC's SHOULD NOT designation.

$this->assertDef('mul');

}

// vim: et sw=4 sts=4

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