fix(platform): govern geospatial analysis and raster handoffs

backend/tests/test_sprint122_raster_upload_metadata_mapping.py

@@ -12,8 +12,12 @@ class FakeUploadFile:
     filename = "real-orthophoto.tif"
     content_type = "image/tiff"
 
-    async def read(self) -> bytes:
-        return b"fake-raster"
+    def __init__(self) -> None:
+        self._content = b"fake-raster"
+
+    async def read(self, size: int) -> bytes:
+        chunk, self._content = self._content[:size], self._content[size:]
+        return chunk
 
 
 class FakeSession:
@@ -40,16 +44,19 @@ def test_raster_upload_maps_metadata_bounds_resolution_and_bands(monkeypatch) ->
     project_id = uuid4()
     db = FakeSession(project_id)
 
-    monkeypatch.setattr(
-        "app.services.dataset_service.StorageService.persist_dataset_file",
-        lambda **_: {
+    async def persist_upload_file(**_kwargs):
+        return {
             "storage_path": "/tmp/real-orthophoto.tif",
             "original_filename": "real-orthophoto.tif",
             "stored_filename": "real-orthophoto.tif",
             "content_type": "image/tiff",
             "size_bytes": 11,
             "checksum_sha256": "checksum",
-        },
+        }
+
+    monkeypatch.setattr(
+        "app.services.dataset_service.StorageService.persist_upload_file",
+        persist_upload_file,
     )
     monkeypatch.setattr(
         "app.services.dataset_service.extract_raster_metadata",