修复流水详情原始文件关联与Mock随机logId

lsfx-mock-server/tests/test_file_service.py

@@ -8,7 +8,7 @@ import io
 from fastapi import BackgroundTasks
 from fastapi.datastructures import UploadFile
 
-from services.file_service import FileService
+from services.file_service import FileRecord, FileService
 
 
 class FakeStaffIdentityRepository:
@@ -139,7 +139,7 @@ def test_fetch_inner_flow_persists_primary_binding_record(monkeypatch):
     response = service.fetch_inner_flow(request)
     log_id = response["data"][0]
 
-    assert log_id == service.log_counter
+    assert 10000 <= log_id <= 99999
     assert log_id in service.file_records
 
     record = service.file_records[log_id]
@@ -156,6 +156,24 @@ def test_fetch_inner_flow_persists_primary_binding_record(monkeypatch):
     assert record.total_records == 200
 
 
+def test_generate_log_id_should_retry_when_random_value_conflicts(monkeypatch):
+    """随机 logId 命中已存在记录时必须重试并返回未占用值。"""
+    service = FileService(staff_identity_repository=FakeStaffIdentityRepository())
+    service.file_records[34567] = FileRecord(
+        log_id=34567,
+        group_id=1001,
+        file_name="existing.csv",
+    )
+
+    candidate_values = iter([34567, 45678])
+    monkeypatch.setattr(
+        "services.file_service.random.randint",
+        lambda start, end: next(candidate_values),
+    )
+
+    assert service._generate_log_id() == 45678
+
+
 def test_build_rule_hit_plan_should_be_deterministic_for_same_log_id():
     service = FileService(staff_identity_repository=FakeStaffIdentityRepository())