@Test
public void testCookie_Serialization() {
    var newCookie = new NewCookie.Builder("testcookie")
            .value("hello")
            .path("/")
            .version(1)
            .maxAge(-1)
            .secure(true)
            .httpOnly(true)
            .sameSite(NewCookie.SameSite.STRICT)
            .build();

    String serializedCookie = RuntimeDelegate.getInstance().createHeaderDelegate(NewCookie.class).toString(newCookie);
    assertTrue(String.format("serialized cookie does not contain samesite-attribute: %s", serializedCookie), serializedCookie.toLowerCase().contains("samesite=strict"));
} 

StrictTest.testCookie_Serialization:43 serialized cookie does not contain samesite-attribute: testcookie=hello;Version=1;Path=/;Secure;HttpOnly