Add flags integration test

tests/integration/test_flags.py

@@ -0,0 +1,28 @@
+import json
+import uuid
+
+from sentry_sdk.envelope import Envelope, Item, PayloadRef
+
+
+def test_user_report_with_event(relay_with_processing, mini_sentry):
+    project_id = 42
+    relay = relay_with_processing()
+    mini_sentry.add_full_project_config(project_id)
+
+    event_id = uuid.uuid1().hex
+    error_payload = {
+        "event_id": event_id,
+        "message": "test",
+        "context": {"flags": {"values": [{"flag": "hello", "result": "world"}]}},
+        "type": "error",
+        "environment": "production",
+        "release": "[email protected]",
+    }
+
+    envelope = Envelope(headers={"event_id": event_id})
+    envelope.add_item(Item(PayloadRef(json=error_payload), type="event"))
+
+    relay.send_envelope(project_id, envelope)
+
+    envelope = mini_sentry.captured_events.get(timeout=1)
+    assert envelope