Add webhook endpoint test programs

TestPrograms/test_webhook_http.py

@@ -0,0 +1,45 @@
+#!/usr/bin/env python3
+import os, json, hmac, hashlib, httpx
+
+WEBHOOK_URL = os.environ.get("WEBHOOK_URL", "https://githubpr.bjsystems.co.uk/webhook/github")
+SECRET = os.environ.get("WEBHOOK_SECRET", "devsecret")
+
+def sign(secret: str, body: bytes) -> str:
+    return "sha256=" + hmac.new(secret.encode("utf-8"), body, hashlib.sha256).hexdigest()
+
+def payload(action="opened"):
+    return {
+        "action": action,
+        "repository": {
+            "full_name": "Koozali-SME-Server/smeserver-manager",
+            "owner": {"login": "Koozali-SME-Server"},
+            "name": "smeserver-manager",
+        },
+        "pull_request": {
+            "number": 52,
+            "html_url": "https://github.com/Koozali-SME-Server/smeserver-manager/pull/42",
+            "title": "Test PR from harness",
+            "body": "Harness test body.",
+            "user": {"login": "octocat", "html_url": "https://github.com/octocat"},
+            "base": {"ref": "master", "sha": "9f8e7d6cafebabe0000deadbeef0000000000000"},
+            "head": {"ref": "feature/test", "sha": "a1b2c3ddeeddbb0000deadbeef0000000000000", "repo": {"owner": {"login": "octocat"}}},
+            "created_at": "2025-09-17T12:34:56Z",
+            "labels": [{"name": "enhancement"}],
+        },
+    }
+
+def post_event(action="opened"):
+    body = json.dumps(payload(action)).encode("utf-8")
+    headers = {
+        "X-GitHub-Event": "pull_request",
+        "X-Hub-Signature-256": sign(SECRET, body),
+        "Content-Type": "application/json",
+    }
+    r = httpx.post(WEBHOOK_URL, data=body, headers=headers, timeout=30)
+    print(f"{action} ->", r.status_code, r.text)
+
+if __name__ == "__main__":
+    # Send an "opened" event then a "synchronize" event
+    post_event("opened")
+    post_event("synchronize")
+