119 行
3.7 KiB
TypeScript
119 行
3.7 KiB
TypeScript
import { FinanceCalculator } from '../src/core/finance/finance.calculator';
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describe('FinanceCalculator (TDD 测试套件: 财务与分销计算引擎)', () => {
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let calculator: FinanceCalculator;
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beforeEach(() => {
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calculator = new FinanceCalculator();
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});
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describe('1. 平台抽成与大神分润计算', () => {
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it('100元订单按10%抽成，平台得10元，大神得90元', () => {
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const result = calculator.splitOrderIncome({
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orderAmountCents: 10000, // 100.00 元
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platformRatePercent: 10,
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});
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expect(result.platformFeeCents).toBe(1000); // 10.00 元
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expect(result.expertIncomeCents).toBe(9000); // 90.00 元
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expect(result.platformFeeCents + result.expertIncomeCents).toBe(10000);
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});
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it('出现小数分位时，向下取整平台抽成，保证资金平衡无漂移', () => {
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const result = calculator.splitOrderIncome({
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orderAmountCents: 3333, // 33.33 元
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platformRatePercent: 15, // 15% -> 499.95 分
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});
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expect(result.platformFeeCents).toBe(499);
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expect(result.expertIncomeCents).toBe(2834);
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expect(result.platformFeeCents + result.expertIncomeCents).toBe(3333);
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});
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});
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describe('2. 二级分销佣金分润计算', () => {
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it('100元订单，一级分销商得5元，二级分销商得2元', () => {
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const comm = calculator.calculateDistribution({
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orderAmountCents: 10000,
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level1Percent: 5,
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level2Percent: 2,
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hasLevel1: true,
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hasLevel2: true,
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});
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expect(comm.level1Cents).toBe(500); // 5.00 元
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expect(comm.level2Cents).toBe(200); // 2.00 元
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expect(comm.totalCommissionCents).toBe(700);
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});
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it('只有一级推荐人时，仅发放一级佣金', () => {
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const comm = calculator.calculateDistribution({
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orderAmountCents: 20000,
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level1Percent: 5,
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level2Percent: 2,
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hasLevel1: true,
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hasLevel2: false,
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});
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expect(comm.level1Cents).toBe(1000);
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expect(comm.level2Cents).toBe(0);
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expect(comm.totalCommissionCents).toBe(1000);
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});
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});
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describe('3. 优惠券抵扣计算', () => {
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it('订单满100减20，实付80元', () => {
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const payAmount = calculator.applyCoupon({
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orderAmountCents: 10000,
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couponDiscountCents: 2000,
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minOrderThresholdCents: 8000,
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});
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expect(payAmount).toBe(8000);
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});
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it('未达到优惠券门槛时应抛出异常', () => {
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expect(() => {
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calculator.applyCoupon({
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orderAmountCents: 5000, // 50元
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couponDiscountCents: 2000,
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minOrderThresholdCents: 8000, // 需满80元
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});
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}).toThrow('订单未达到优惠券使用门槛');
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});
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it('优惠券减免额大于订单总额时，实付金额应为0而不是负数', () => {
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const payAmount = calculator.applyCoupon({
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orderAmountCents: 3000,
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couponDiscountCents: 5000,
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minOrderThresholdCents: 0,
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});
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expect(payAmount).toBe(0);
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});
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});
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describe('4. 提现门槛与手续费校验', () => {
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it('低于最低提现额度(如50元)应抛出异常', () => {
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expect(() => {
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calculator.calculateWithdrawal({
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withdrawAmountCents: 3000, // 30元
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minLimitCents: 5000, // 最低50元
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feePercent: 1,
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});
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}).toThrow('提现金额低于平台最低提现限额');
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});
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it('提现100元，手续费1%，实际打款99元', () => {
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const res = calculator.calculateWithdrawal({
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withdrawAmountCents: 10000,
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minLimitCents: 5000,
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feePercent: 1,
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});
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expect(res.feeCents).toBe(100);
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expect(res.actualArrivalCents).toBe(9900);
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});
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});
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});
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