feat(domain): add income calculation with commission support

2026-02-23 11:04:48 +08:00
parent 77d23d0c9d
commit 2222dccbb7
3 changed files with 90 additions and 5 deletions
@@ -0,0 +1,46 @@
+import { describe, expect, it } from "vitest"
+import { calculateOrderIncome } from "@/lib/domain/income"
+
+describe("calculateOrderIncome", () => {
+  it("calculates percentage commission income", () => {
+    const result = calculateOrderIncome(100, {
+      commissionType: "percentage",
+      commissionValue: 12,
+    })
+
+    expect(result).toEqual({
+      income: 88,
+      commissionLabel: "扣除12%抽成",
+    })
+  })
+
+  it("calculates fixed commission income", () => {
+    const result = calculateOrderIncome(60, {
+      commissionType: "fixed",
+      commissionValue: 8,
+    })
+
+    expect(result).toEqual({
+      income: 52,
+      commissionLabel: "扣除¥8固定抽成",
+    })
+  })
+
+  it("keeps full income for independent orders", () => {
+    const result = calculateOrderIncome(90)
+
+    expect(result).toEqual({
+      income: 90,
+      commissionLabel: "独立接单无抽成",
+    })
+  })
+
+  it("does not return negative income for fixed commission", () => {
+    const result = calculateOrderIncome(6, {
+      commissionType: "fixed",
+      commissionValue: 8,
+    })
+
+    expect(result.income).toBe(0)
+  })
+})