Test that check() correctly identifies blocked and unblocked domains.
check() output goes to stderr via output.info/output.print when is_tty=true.

-- Testcase --
import adb from 'adblock-fast';
let ti = adb._test_internals;

// Build the blocklist
adb.env.load_config();
ti.set_cfg('dns', 'dnsmasq.servers');
ti.set_cfg('dnsmasq_sanity_check', false);
ti.set_cfg('dnsmasq_validity_check', false);
ti.set_cfg('heartbeat_domain', null);
ti.set_cfg('config_update_enabled', false);
ti.set_cfg('update_config_sizes', false);
ti.env.dns_set_output_values('dnsmasq.servers');
ti.append_urls();
ti.download_lists();

// Enable tty mode so output goes to stderr (captured by test framework)
// Use verbosity=2 to get verbose output (which includes [PROC] prefix)
ti.state.is_tty = true;
ti.set_cfg('verbosity', 2);

// Now test check()
adb.check('ad.doubleclick.test.example.com this-domain-not-in-list.test.example.com');
-- End --

-- Expect stderr --
[PROC] Found 1 match for 'ad.doubleclick.test.example.com' in 'TESTDIR/var_run/adblock-fast/dnsmasq.servers'.
ad.doubleclick.test.example.com
[PROC] The 'this-domain-not-in-list.test.example.com' is not found in current block-list ('TESTDIR/var_run/adblock-fast/dnsmasq.servers').
-- End --