public function testIsValid() { $this->assertTrue(CULocale::isValid("de_DE")); $this->assertTrue(CULocale::isValid("en_US")); $this->assertTrue(CULocale::isValid("en_gb")); $this->assertTrue(CULocale::isValid("en-gb")); $this->assertTrue(CULocale::isValid("de_Latn_DE")); }