def test_saved_session_cookies_on_different_domain(tmp_path, httpbin, remote_httpbin):
    """Saved session cookies ARE persisted when making a new request to a different domain."""
    http(
        '--session',
        str(tmp_path / 'session.json'),
        httpbin + '/cookies/set/a/b'
    )
    r = http(
        '--session',
        str(tmp_path / 'session.json'),
        remote_httpbin + '/cookies'
    )
    assert r.json == {'cookies': {}}
Saved session cookies ARE persisted when making a new request to a different domain.
tests/test_cookie_on_redirects.py