detect: add test for ldap.request.attribute_type keyword

Ticket: #7533

diff --git a/tests/detect-ldap-attribute/README.md b/tests/detect-ldap-attribute/README.md
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+Test ldap.request.attribute_type keyword.
+
+PCAP from ../ldap-search/ldap.pcap
+
+Redmine ticket: https://redmine.openinfosecfoundation.org/issues/7533
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diff --git a/tests/detect-ldap-attribute/test.rules b/tests/detect-ldap-attribute/test.rules
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+++ b/tests/detect-ldap-attribute/test.rules
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+alert ldap any any -> any any (msg:"Test request attribute type"; ldap.request.attribute_type; content:"*"; startswith; endswith; sid:1;)
+alert ldap any any -> any any (msg:"Test request attribute type"; ldap.request.attribute_type; content:"+"; startswith; endswith; sid:2;)

diff --git a/tests/detect-ldap-attribute/test.yaml b/tests/detect-ldap-attribute/test.yaml
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+++ b/tests/detect-ldap-attribute/test.yaml
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+requires:
+  min-version: 8
+
+pcap: ../ldap-search/ldap.pcap
+
+args:
+  - -k none --set stream.inline=true
+
+checks:
+  - filter:
+      count: 1
+      match:
+        event_type: alert
+        ldap.request.operation: search_request
+        ldap.request.search_request.attributes[0]: "*"
+        alert.signature_id: 1
+  - filter:
+      count: 1
+      match:
+        event_type: alert
+        ldap.request.operation: search_request
+        ldap.request.search_request.attributes[1]: +
+        alert.signature_id: 2
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