feat: 支持7z资料包导入

tests/test_documents.py

@@ -1,6 +1,9 @@
 from django.core.files.uploadedfile import SimpleUploadedFile
 from django.urls import reverse
 from io import BytesIO
+from pathlib import Path
+import sys
+import types
 from zipfile import ZipFile
 
 from apps.documents.forms import DocumentUploadForm
@@ -294,3 +297,40 @@ def test_import_submission_batch_supports_zip_package_and_preserves_relative_pat
         "CH1/注册申请表.txt",
         "CH1/目标产品说明书.txt",
     ]
+
+
+def test_import_submission_batch_supports_7z_package_and_preserves_relative_paths(db, monkeypatch, tmp_path):
+    package = SimpleUploadedFile(
+        "registration-package.7z",
+        b"fake-7z-bytes",
+        content_type="application/x-7z-compressed",
+    )
+
+    class FakeSevenZipFile:
+        def __init__(self, _file_obj, mode="r"):
+            self.mode = mode
+
+        def __enter__(self):
+            return self
+
+        def __exit__(self, exc_type, exc, tb):
+            return False
+
+        def extractall(self, path):
+            target = Path(path)
+            (target / "CH1").mkdir(parents=True, exist_ok=True)
+            (target / "CH1" / "注册申请表.txt").write_text("产品名称：产品A", encoding="utf-8")
+            (target / "CH1" / "目标产品说明书.txt").write_text("产品名称：产品A", encoding="utf-8")
+
+    fake_module = types.SimpleNamespace(SevenZipFile=FakeSevenZipFile)
+    monkeypatch.setitem(sys.modules, "py7zr", fake_module)
+
+    result = import_submission_batch("document_review", [package])
+
+    batch = SubmissionBatch.objects.get(batch_id=result["batch_id"])
+    documents = list(UploadedDocument.objects.filter(batch=batch).order_by("relative_path"))
+    assert batch.file_count == 2
+    assert [document.relative_path for document in documents] == [
+        "CH1/注册申请表.txt",
+        "CH1/目标产品说明书.txt",
+    ]