refactor: consolidate finance workflow modules

server/tests/test_expense_claim_platform_context_tools.py

@@ -0,0 +1,52 @@
+from __future__ import annotations
+
+from types import SimpleNamespace
+
+from app.services.expense_claim_platform_context_tools import (
+    collect_context_cities,
+    collect_context_item_ids,
+    extract_first_known_city_from_text,
+    unique_text_values,
+)
+from app.services.expense_rule_runtime_models import build_default_expense_rule_catalog
+
+
+def test_unique_text_values_trims_and_preserves_order() -> None:
+    assert unique_text_values([" 上海 ", "", "上海", "北京", None, "北京"]) == [
+        "上海",
+        "北京",
+    ]
+
+
+def test_collect_context_item_ids_skips_empty_and_dedupes() -> None:
+    contexts = [
+        {"item": SimpleNamespace(id="item-1")},
+        {"item": SimpleNamespace(id="item-1")},
+        {"item": SimpleNamespace(id=" item-2 ")},
+        {"item": SimpleNamespace(id="")},
+        {},
+    ]
+
+    assert collect_context_item_ids(contexts) == ["item-1", "item-2"]
+
+
+def test_collect_context_cities_can_include_item_reason() -> None:
+    policy = build_default_expense_rule_catalog().travel_policy
+    assert policy is not None
+    context = {
+        "ocr_summary": "火车票；武汉-上海",
+        "ocr_text": "",
+        "document_info": {
+            "fields": [
+                {"key": "route", "label": "路线", "value": "上海-深圳"},
+            ]
+        },
+        "item": SimpleNamespace(item_location="", item_reason="深圳-上海"),
+    }
+
+    assert set(collect_context_cities(context, policy, include_item_reason=True)) == {
+        "武汉",
+        "上海",
+        "深圳",
+    }
+    assert extract_first_known_city_from_text("预计前往北京客户现场", policy) == "北京"