test: new test for dns.answer.name

diff --git a/tests/dns/dns-answer-name/README.md b/tests/dns/dns-answer-name/README.md
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+Test the `dns.answer.name` sticky buffer.
+
+The PCAP here was a request created with Scapy to include answers in
+the request. However the response is from a real DNS server with the
+provided request.

diff --git a/tests/dns/dns-answer-name/dns-udp-request-with-answer.pcap b/tests/dns/dns-answer-name/dns-udp-request-with-answer.pcap
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Binary files /dev/null and b/tests/dns/dns-answer-name/dns-udp-request-with-answer.pcap differ

diff --git a/tests/dns/dns-answer-name/test.rules b/tests/dns/dns-answer-name/test.rules
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+++ b/tests/dns/dns-answer-name/test.rules
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+# Should alert in both directions as no flow is provided.
+alert dns any any -> any any (dns.answer.name; content:"oisf"; sid:1; rev:1;)
+
+# Should only alert in the request direction.
+alert dns any any -> any any (dns.answer.name; content:"oisf"; flow:to_server; sid:2; rev:1;)
+
+# Should only alert in the response direction.
+alert dns any any -> any any (dns.answer.name; content:"oisf"; flow:to_client; sid:3; rev:1;)

diff --git a/tests/dns/dns-answer-name/test.yaml b/tests/dns/dns-answer-name/test.yaml
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+++ b/tests/dns/dns-answer-name/test.yaml
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+requires:
+  min-version: 8
+
+checks:
+  - filter:
+      count: 2
+      match:
+        alert.signature_id: 1
+        app_proto: dns
+  - filter:
+      count: 1
+      match:
+        alert.signature_id: 1
+        direction: to_client
+        app_proto: dns
+  - filter:
+      count: 1
+      match:
+        alert.signature_id: 1
+        direction: to_server
+        app_proto: dns
+
+  - filter:
+      count: 1
+      match:
+        alert.signature_id: 2
+  - filter:
+      count: 1
+      match:
+        alert.signature_id: 2
+        direction: to_server
+        app_proto: dns
+
+  - filter:
+      count: 1
+      match:
+        alert.signature_id: 3
+  - filter:
+      count: 1
+      match:
+        alert.signature_id: 3
+        direction: to_client
+        app_proto: dns