function LocaleBrowserDetectionTest::testLanguageFromBrowser

Unit tests for the locale_language_from_browser() function.

File

modules/locale/locale.test, line 1706

Class

LocaleBrowserDetectionTest

Test browser language detection.

Code

function testLanguageFromBrowser() {
    // Load the required functions.
    require_once DRUPAL_ROOT . '/includes/locale.inc';
    $languages = array(
        // In our test case, 'en' has priority over 'en-US'.
'en' => (object) array(
            'language' => 'en',
        ),
        'en-US' => (object) array(
            'language' => 'en-US',
        ),
        // But 'fr-CA' has priority over 'fr'.
'fr-CA' => (object) array(
            'language' => 'fr-CA',
        ),
        'fr' => (object) array(
            'language' => 'fr',
        ),
        // 'es-MX' is alone.
'es-MX' => (object) array(
            'language' => 'es-MX',
        ),
        // 'pt' is alone.
'pt' => (object) array(
            'language' => 'pt',
        ),
        // Language codes with more then one dash are actually valid.
        // eh-oh-laa-laa is the official language code of the Teletubbies.
'eh-oh-laa-laa' => (object) array(
            'language' => 'eh-oh-laa-laa',
        ),
    );
    $test_cases = array(
        // Equal qvalue for each language, choose the site preferred one.
'en,en-US,fr-CA,fr,es-MX' => 'en',
        'en-US,en,fr-CA,fr,es-MX' => 'en',
        'fr,en' => 'en',
        'en,fr' => 'en',
        'en-US,fr' => 'en',
        'fr,en-US' => 'en',
        'fr,fr-CA' => 'fr-CA',
        'fr-CA,fr' => 'fr-CA',
        'fr' => 'fr-CA',
        'fr;q=1' => 'fr-CA',
        'fr,es-MX' => 'fr-CA',
        'fr,es' => 'fr-CA',
        'es,fr' => 'fr-CA',
        'es-MX,de' => 'es-MX',
        'de,es-MX' => 'es-MX',
        // Different cases and whitespace.
'en' => 'en',
        'En' => 'en',
        'EN' => 'en',
        ' en' => 'en',
        'en ' => 'en',
        'en, fr' => 'en',
        // A less specific language from the browser matches a more specific one
        // from the website, and the other way around for compatibility with
        // some versions of Internet Explorer.
'es' => 'es-MX',
        'es-MX' => 'es-MX',
        'pt' => 'pt',
        'pt-PT' => 'pt',
        'pt-PT;q=0.5,pt-BR;q=1,en;q=0.7' => 'en',
        'pt-PT;q=1,pt-BR;q=0.5,en;q=0.7' => 'en',
        'pt-PT;q=0.4,pt-BR;q=0.1,en;q=0.7' => 'en',
        'pt-PT;q=0.1,pt-BR;q=0.4,en;q=0.7' => 'en',
        // Language code with several dashes are valid. The less specific language
        // from the browser matches the more specific one from the website.
'eh-oh-laa-laa' => 'eh-oh-laa-laa',
        'eh-oh-laa' => 'eh-oh-laa-laa',
        'eh-oh' => 'eh-oh-laa-laa',
        'eh' => 'eh-oh-laa-laa',
        // Different qvalues.
'fr,en;q=0.5' => 'fr-CA',
        'fr,en;q=0.5,fr-CA;q=0.25' => 'fr',
        // Silly wildcards are also valid.
'*,fr-CA;q=0.5' => 'en',
        '*,en;q=0.25' => 'fr-CA',
        'en,en-US;q=0.5,fr;q=0.25' => 'en',
        'en-US,en;q=0.5,fr;q=0.25' => 'en-US',
        // Unresolvable cases.
'' => FALSE,
        'de,pl' => FALSE,
        'iecRswK4eh' => FALSE,
        $this->randomName(10) => FALSE,
    );
    foreach ($test_cases as $accept_language => $expected_result) {
        $_SERVER['HTTP_ACCEPT_LANGUAGE'] = $accept_language;
        $result = locale_language_from_browser($languages);
        $this->assertIdentical($result, $expected_result, format_string("Language selection '@accept-language' selects '@result', result = '@actual'", array(
            '@accept-language' => $accept_language,
            '@result' => $expected_result,
            '@actual' => isset($result) ? $result : 'none',
        )));
    }
}