UtilsTest::testPathPrefixedByLangCode PHP Method

    public function testPathPrefixedByLangCode()
    {
        $languagesEnabled = $this->grav['config']->get('system.languages.supported', []);
        $arrayOfLanguages = ['en', 'de', 'it', 'es', 'dk', 'el'];
        $languagesNotEnabled = array_diff($arrayOfLanguages, $languagesEnabled);
        $oneLanguageNotEnabled = reset($languagesNotEnabled);
        if (count($languagesEnabled)) {
            $this->assertTrue(Utils::pathPrefixedByLangCode('/' . $languagesEnabled[0] . '/test'));
        }
        $this->assertFalse(Utils::pathPrefixedByLangCode('/' . $oneLanguageNotEnabled . '/test'));
        $this->assertFalse(Utils::pathPrefixedByLangCode('/test'));
        $this->assertFalse(Utils::pathPrefixedByLangCode('/xx'));
        $this->assertFalse(Utils::pathPrefixedByLangCode('/xx/'));
        $this->assertFalse(Utils::pathPrefixedByLangCode('/'));
    }