test CD bit forwarding

packages/conformance-tests/src/resolver/dnssec/rfc4035/section_3/section_3_2.rs

@@ -1,3 +1,5 @@
+mod section_3_2_2;
+
 use dns_test::{
     client::{Client, DigSettings},
     name_server::NameServer,

packages/conformance-tests/src/resolver/dnssec/rfc4035/section_3/section_3_2/section_3_2_2.rs

@@ -0,0 +1,23 @@
+use dns_test::{
+    client::{Client, DigSettings},
+    name_server::NameServer,
+    record::RecordType,
+    zone_file::Root,
+    Network, Resolver, Result, FQDN,
+};
+
+#[test]
+fn copies_cd_bit_from_query_to_response() -> Result<()> {
+    let network = &Network::new()?;
+    let ns = NameServer::new(&dns_test::PEER, FQDN::ROOT, network)?.start()?;
+    let resolver = Resolver::new(network, Root::new(ns.fqdn().clone(), ns.ipv4_addr()))
+        .start(&dns_test::SUBJECT)?;
+
+    let client = Client::new(network)?;
+    let settings = *DigSettings::default().checking_disabled().recurse();
+    let ans = client.dig(settings, resolver.ipv4_addr(), RecordType::SOA, &FQDN::ROOT)?;
+
+    assert!(ans.flags.checking_disabled);
+
+    Ok(())
+}