fix(tests): update tests to match current download implementation

- Remove calculate_sha256 mocking from download_manager tests since
  SHA256 now comes from API metadata (not recalculated during download)
- Update chunk_size assertion from 4MB to 16MB in downloader config test

tests/services/test_download_manager_error.py

@@ -281,8 +281,6 @@ async def test_execute_download_extracts_zip_single_model(monkeypatch, tmp_path)
         DownloadManager, "_get_lora_scanner", AsyncMock(return_value=dummy_scanner)
     )
     monkeypatch.setattr(MetadataManager, "save_metadata", AsyncMock(return_value=True))
-    hash_calculator = AsyncMock(return_value="hash-single")
-    monkeypatch.setattr(download_manager, "calculate_sha256", hash_calculator)
 
     result = await manager._execute_download(
         download_urls=download_urls,
@@ -299,10 +297,10 @@ async def test_execute_download_extracts_zip_single_model(monkeypatch, tmp_path)
     assert not zip_path.exists()
     extracted = save_dir / "model.safetensors"
     assert extracted.exists()
-    assert hash_calculator.await_args.args[0] == str(extracted)
     saved_call = MetadataManager.save_metadata.await_args
     assert saved_call.args[0] == str(extracted)
-    assert saved_call.args[1].sha256 == "hash-single"
+    # SHA256 comes from metadata (API value), not recalculated
+    assert saved_call.args[1].sha256 == "sha256"
     assert dummy_scanner.add_model_to_cache.await_count == 1
 
 
@@ -351,8 +349,6 @@ async def test_execute_download_extracts_zip_multiple_models(monkeypatch, tmp_pa
         DownloadManager, "_get_lora_scanner", AsyncMock(return_value=dummy_scanner)
     )
     monkeypatch.setattr(MetadataManager, "save_metadata", AsyncMock(return_value=True))
-    hash_calculator = AsyncMock(side_effect=["hash-one", "hash-two"])
-    monkeypatch.setattr(download_manager, "calculate_sha256", hash_calculator)
 
     result = await manager._execute_download(
         download_urls=download_urls,
@@ -372,15 +368,15 @@ async def test_execute_download_extracts_zip_multiple_models(monkeypatch, tmp_pa
     assert extracted_one.exists()
     assert extracted_two.exists()
 
-    assert hash_calculator.await_count == 2
     assert MetadataManager.save_metadata.await_count == 2
     assert dummy_scanner.add_model_to_cache.await_count == 2
 
     metadata_calls = MetadataManager.save_metadata.await_args_list
     assert metadata_calls[0].args[0] == str(extracted_one)
-    assert metadata_calls[0].args[1].sha256 == "hash-one"
+    # SHA256 comes from metadata (API value), not recalculated
+    assert metadata_calls[0].args[1].sha256 == "sha256"
     assert metadata_calls[1].args[0] == str(extracted_two)
-    assert metadata_calls[1].args[1].sha256 == "hash-two"
+    assert metadata_calls[1].args[1].sha256 == "sha256"
 
 
 @pytest.mark.asyncio
@@ -427,8 +423,6 @@ async def test_execute_download_extracts_zip_pt_embedding(monkeypatch, tmp_path)
         ServiceRegistry, "get_embedding_scanner", AsyncMock(return_value=dummy_scanner)
     )
     monkeypatch.setattr(MetadataManager, "save_metadata", AsyncMock(return_value=True))
-    hash_calculator = AsyncMock(return_value="hash-pt")
-    monkeypatch.setattr(download_manager, "calculate_sha256", hash_calculator)
 
     result = await manager._execute_download(
         download_urls=download_urls,
@@ -445,10 +439,10 @@ async def test_execute_download_extracts_zip_pt_embedding(monkeypatch, tmp_path)
     assert not zip_path.exists()
     extracted = save_dir / "embedding.pt"
     assert extracted.exists()
-    assert hash_calculator.await_args.args[0] == str(extracted)
     saved_call = MetadataManager.save_metadata.await_args
     assert saved_call.args[0] == str(extracted)
-    assert saved_call.args[1].sha256 == "hash-pt"
+    # SHA256 comes from metadata (API value), not recalculated
+    assert saved_call.args[1].sha256 == "sha256"
     assert dummy_scanner.add_model_to_cache.await_count == 1
 
 

tests/services/test_downloader_error_paths.py

@@ -9,7 +9,11 @@ from unittest.mock import AsyncMock, patch, MagicMock
 
 import aiohttp
 
-from py.services.downloader import Downloader, DownloadStalledError, DownloadRestartRequested
+from py.services.downloader import (
+    Downloader,
+    DownloadStalledError,
+    DownloadRestartRequested,
+)
 
 
 class TestDownloadStreamControl:
@@ -118,6 +122,7 @@ class TestDownloaderConfiguration:
             return instance1, instance2
 
         import asyncio
+
         instance1, instance2 = asyncio.run(get_instances())
 
         assert instance1 is instance2
@@ -131,7 +136,7 @@ class TestDownloaderConfiguration:
 
         downloader = Downloader()
 
-        assert downloader.chunk_size == 4 * 1024 * 1024  # 4MB
+        assert downloader.chunk_size == 16 * 1024 * 1024  # 16MB
         assert downloader.max_retries == 5
         assert downloader.base_delay == 2.0
         assert downloader.session_timeout == 300
@@ -145,9 +150,9 @@ class TestDownloaderConfiguration:
 
         downloader = Downloader()
 
-        assert 'User-Agent' in downloader.default_headers
+        assert "User-Agent" in downloader.default_headers
-        assert 'ComfyUI-LoRA-Manager' in downloader.default_headers['User-Agent']
+        assert "ComfyUI-LoRA-Manager" in downloader.default_headers["User-Agent"]
-        assert downloader.default_headers['Accept-Encoding'] == 'identity'
+        assert downloader.default_headers["Accept-Encoding"] == "identity"
 
         # Cleanup
         Downloader._instance = None
@@ -204,7 +209,10 @@ class TestDownloaderExceptions:
         with pytest.raises(DownloadRestartRequested) as exc_info:
             raise DownloadRestartRequested("Reconnect requested after resume")
 
-        assert "reconnect" in str(exc_info.value).lower() or "restart" in str(exc_info.value).lower()
+        assert (
+            "reconnect" in str(exc_info.value).lower()
+            or "restart" in str(exc_info.value).lower()
+        )
 
 
 class TestDownloaderAuthHeaders:
@@ -217,8 +225,8 @@ class TestDownloaderAuthHeaders:
 
         headers = downloader._get_auth_headers(use_auth=False)
 
-        assert 'User-Agent' in headers
+        assert "User-Agent" in headers
-        assert 'Authorization' not in headers
+        assert "Authorization" not in headers
 
         Downloader._instance = None
 
@@ -231,12 +239,14 @@ class TestDownloaderAuthHeaders:
         mock_settings = MagicMock()
         mock_settings.get.return_value = None
 
-        with patch('py.services.downloader.get_settings_manager', return_value=mock_settings):
+        with patch(
+            "py.services.downloader.get_settings_manager", return_value=mock_settings
+        ):
             headers = downloader._get_auth_headers(use_auth=True)
 
             # Should still have User-Agent but no Authorization
-            assert 'User-Agent' in headers
+            assert "User-Agent" in headers
-            assert 'Authorization' not in headers
+            assert "Authorization" not in headers
 
         Downloader._instance = None
 
@@ -249,14 +259,16 @@ class TestDownloaderAuthHeaders:
         mock_settings = MagicMock()
         mock_settings.get.return_value = "test-api-key-12345"
 
-        with patch('py.services.downloader.get_settings_manager', return_value=mock_settings):
+        with patch(
+            "py.services.downloader.get_settings_manager", return_value=mock_settings
+        ):
             headers = downloader._get_auth_headers(use_auth=True)
 
             # Should have both User-Agent and Authorization
-            assert 'User-Agent' in headers
+            assert "User-Agent" in headers
-            assert 'Authorization' in headers
+            assert "Authorization" in headers
-            assert 'test-api-key-12345' in headers['Authorization']
+            assert "test-api-key-12345" in headers["Authorization"]
-            assert headers['Content-Type'] == 'application/json'
+            assert headers["Content-Type"] == "application/json"
 
         Downloader._instance = None
 
@@ -286,6 +298,7 @@ class TestDownloaderSessionManagement:
 
         # Mock datetime to return current time
         from datetime import datetime, timedelta
+
         current_time = datetime.now()
         downloader._session_created_at = current_time
 
@@ -301,6 +314,7 @@ class TestDownloaderSessionManagement:
 
         # Simulate an old session (older than timeout)
         from datetime import datetime, timedelta
+
         old_time = datetime.now() - timedelta(seconds=downloader.session_timeout + 1)
         downloader._session_created_at = old_time
         downloader._session = MagicMock()