feat(G1,P16A,P16B): 收口主数据核心与节假日日历增强

server/tests/unit/services/leave.test.js

@@ -1,5 +1,6 @@
 const {
   calculateRequestedDays,
+  calculateRequestedDaysByWorkingCalendar,
   leaveRangesOverlap,
   summarizeLeaveLedgerEntries,
 } = require("../../../src/services/leave");
@@ -49,6 +50,54 @@ describe("Leave Service", () => {
     });
   });
 
+  describe("calculateRequestedDaysByWorkingCalendar", () => {
+    it("skips weekend days by default and respects adjusted workdays", () => {
+      expect(
+        calculateRequestedDaysByWorkingCalendar({
+          startDate: "2026-03-20",
+          endDate: "2026-03-22",
+          startSession: "am",
+          endSession: "pm",
+          calendarDays: [],
+        }),
+      ).toBe(1);
+
+      expect(
+        calculateRequestedDaysByWorkingCalendar({
+          startDate: "2026-03-20",
+          endDate: "2026-03-22",
+          startSession: "am",
+          endSession: "pm",
+          calendarDays: [{ date: "2026-03-21", day_type: "adjusted_workday" }],
+        }),
+      ).toBe(2);
+    });
+
+    it("skips configured holidays inside a weekday span", () => {
+      expect(
+        calculateRequestedDaysByWorkingCalendar({
+          startDate: "2026-03-16",
+          endDate: "2026-03-17",
+          startSession: "am",
+          endSession: "pm",
+          calendarDays: [{ date: "2026-03-17", day_type: "holiday" }],
+        }),
+      ).toBe(1);
+    });
+
+    it("rejects ranges that become fully non-working after calendar adjustment", () => {
+      expect(() =>
+        calculateRequestedDaysByWorkingCalendar({
+          startDate: "2026-03-21",
+          endDate: "2026-03-22",
+          startSession: "am",
+          endSession: "pm",
+          calendarDays: [],
+        }),
+      ).toThrow(/参数校验失败/);
+    });
+  });
+
   describe("leaveRangesOverlap", () => {
     it("detects overlapping half-day ranges", () => {
       expect(