[system testing] Validate assertion for expected number of events

packages/httpjson/_dev/deploy/docker/files/config.yml

@@ -74,3 +74,15 @@ rules:
       - status_code: 200
         body: |-
           {"message": "success"}
+  - path: /testexpectedhits/api
+    methods: ["GET"]
+    request_headers:
+      Authorization:
+        - "Basic dGVzdDp0ZXN0"
+    responses:
+      - status_code: 200
+        headers:
+          Content-Type:
+            - "application/json; charset=utf-8"
+        body: |-
+          {"total":3,"hits":[{"message": "success"},{"message": "success"},{"message": "success"}]}

packages/httpjson/changelog.yml

@@ -1,3 +1,8 @@
+- version: "1.6.2"
+  changes:
+    - description: Add test case for event count assertion
+      type: enhancement
+      link: https://github.com/elastic/integrations/pull/4152
 - version: "1.6.1"
   changes:
     - description: Minor doc fix.

packages/httpjson/data_stream/generic/_dev/test/system/test-expected-hit-count-config.yml

@@ -0,0 +1,11 @@
+input: httpjson
+service: httpjson
+data_stream:
+  vars:
+    data_stream.dataset: httpjson.generic
+    username: test
+    password: test
+    request_url: http://{{Hostname}}:{{Port}}/testexpectedhits/api
+    response_split: "target: body.hits\ntype: array\nkeep_parent: false     "
+assert:
+  hit_count: 3

packages/httpjson/manifest.yml

@@ -3,7 +3,7 @@ name: httpjson
 title: Custom API
 description: Collect custom events from an API endpoint with Elastic agent
 type: integration
-version: "1.6.1"
+version: "1.6.2"
 release: ga
 conditions:
   kibana.version: "^8.4.0"