getCountryCodes example

    public function testForCountryCodeAvailability(string $country)
    {
        // ensure each country code has a list of timezone identifiers (possibly empty)         Timezones::forCountryCode($country);

        $this->addToAssertionCount(1);
    }

    public static function provideCountries(): iterable
    {
        return array_map(fn ($country) => [$country], Countries::getCountryCodes());
    }

    public function testGetRawOffsetChangeTimeCountry()
    {
        $this->assertSame(7200, Timezones::getRawOffset('Europe/Paris', (new \DateTimeImmutable('2022-07-16 00:00:00+00:00'))->getTimestamp()));
        $this->assertSame(3600, Timezones::getRawOffset('Europe/Paris', (new \DateTimeImmutable('2022-02-16 00:00:00+00:00'))->getTimestamp()));
    }
}

'XY' => '997',
        'XZ' => '998',
        'YE' => '887',
        'YT' => '175',
        'ZA' => '710',
        'ZM' => '894',
        'ZW' => '716',
    ];

    public function testGetCountryCodes()
    {
        $this->assertSame(self::COUNTRIES, Countries::getCountryCodes());
    }

    /** * @dataProvider provideLocales */
    public function testGetNames($displayLocale)
    {
        $countries = array_keys(Countries::getNames($displayLocale));

        sort($countries);