Implemente VRF test endpoint (#33)

* Feature: Implement VRF test endpoint just using 1 node as executor.

* Fix: Changed endpoint description.

* Fix: Changed endpoint method name.

* Fix: Changed executor address to use the same Aleph structure.

* Fix: Added missing AlephExecutor fields.

src/aleph_vrf/coordinator/main.py

@@ -3,6 +3,7 @@
 
 from pydantic import BaseModel
 
+from aleph_vrf.coordinator.executor_selection import UsePredeterminedExecutors
 from aleph_vrf.settings import settings
 
 logger = logging.getLogger(__name__)
@@ -16,7 +17,7 @@
 
 logger.debug("local imports")
 from aleph_vrf.coordinator.vrf import generate_vrf
-from aleph_vrf.models import APIError, APIResponse, PublishedVRFResponse
+from aleph_vrf.models import APIError, APIResponse, PublishedVRFResponse, AlephExecutor, ComputeResourceNode
 
 logger.debug("imports done")
 
@@ -59,3 +60,36 @@ async def receive_vrf(
         raise HTTPException(status_code=500, detail=str(err))
 
     return APIResponse(data=response)
+
+
+@app.post("/test_vrf")
+async def receive_test_vrf(
+    request: Optional[VRFRequest] = None,
+) -> APIResponse[Union[PublishedVRFResponse, APIError]]:
+    """
+    Goes through the test VRF random number generation process and returns a random number
+    along with details on how the number was generated, but just using 1 predefined executor.
+    """
+
+    account = settings.aleph_account()
+
+    response: Union[PublishedVRFResponse, APIError]
+
+    request_id = request.request_id if request and request.request_id else None
+    try:
+        executor_url = (
+            "https://CRN_URL"  # CRN main URL, like https://hetzner.staging.aleph.sh
+        )
+        executor_node = ComputeResourceNode(address=executor_url, hash="", score=0)
+        executors = [AlephExecutor(node=executor_node, vm_function=settings.FUNCTION)]
+        executor_policy = UsePredeterminedExecutors(executors)
+        response = await generate_vrf(
+            account=account,
+            request_id=request_id,
+            nb_executors=1,
+            executor_selection_policy=executor_policy,
+        )
+    except Exception as err:
+        raise HTTPException(status_code=500, detail=str(err))
+
+    return APIResponse(data=response)