fix: HTML/JSON import failing (#7330)

tests/utils/helpers.py

@@ -1,3 +1,23 @@
+import json
+
+
 class MatchAny:
     def __eq__(self, _: object) -> bool:
         return True
+
+
+def parse_sse_events(text: str) -> list[dict]:
+    """Parse SSE response text into a list of events with 'event' and 'data' keys."""
+    events = []
+    current: dict = {}
+    for line in text.splitlines():
+        if line.startswith("event:"):
+            current["event"] = line[len("event:") :].strip()
+        elif line.startswith("data:"):
+            current["data"] = json.loads(line[len("data:") :].strip())
+        elif line == "" and current:
+            events.append(current)
+            current = {}
+    if current:
+        events.append(current)
+    return events