feat(order): 重构退款全流程并新增申请退款中状态
- 订单状态新增「6 申请退款中」，用户申请退款原子流转并落待审核退款流水 - 退款失败回退订单至已支付并恢复被取消的权益发放任务 - 新增虚拟支付退款查单兜底任务，反查超时订单并自动订正 - 会员包来源额度不叠加，扣减/回退/回收口径统一为只取生效一份 - 退款回收流水按吊销前后有效剩余差值记账，避免无效回收记录 - 同步更新 README 与 Stitch 设计文档
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package mysqldao
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import (
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"context"
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"testing"
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"github.com/DATA-DOG/go-sqlmock"
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)
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// TestRefundApplyWithOrderStatusCreatesFlowAndMarksRefunding 受理成功：订单 2 已支付 -> 6 申请退款中，并新建退款流水。
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func TestRefundApplyWithOrderStatusCreatesFlowAndMarksRefunding(t *testing.T) {
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base, mock := newQuotaTestDAO(t)
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dao := &RefundFlowLogDao{db: base.db}
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mock.ExpectBegin()
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mock.ExpectQuery("SELECT .* FROM `orders` .*FOR UPDATE").
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WillReturnRows(sqlmock.NewRows([]string{"id", "order_no", "user_id", "order_status", "pay_amount"}).
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AddRow(8, "ORDER-1", 7, 2, 990))
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mock.ExpectQuery("SELECT .* FROM `refund_flow_logs`").
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WillReturnRows(sqlmock.NewRows([]string{"id"}))
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mock.ExpectExec("INSERT INTO `refund_flow_logs`").WillReturnResult(sqlmock.NewResult(1, 1))
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mock.ExpectExec("UPDATE `orders` SET").WillReturnResult(sqlmock.NewResult(0, 1))
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mock.ExpectCommit()
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flow, allowed, err := dao.RefundApplyWithOrderStatus(context.Background(), "ORDER-1", "RF-NEW", "不想要了", 1234)
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if err != nil || !allowed {
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t.Fatalf("allowed=%v err=%v", allowed, err)
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}
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if flow == nil || flow.RefundNo != "RF-NEW" || flow.Status != 0 || flow.RefundAmount != 990 || flow.UserID != 7 {
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t.Fatalf("unexpected flow: %+v", flow)
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}
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if err := mock.ExpectationsWereMet(); err != nil {
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t.Fatal(err)
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}
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}
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// TestRefundApplyWithOrderStatusRejectsNonPaidOrder 订单已处于申请退款中（6）时拒绝受理且不写任何数据。
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func TestRefundApplyWithOrderStatusRejectsNonPaidOrder(t *testing.T) {
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base, mock := newQuotaTestDAO(t)
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dao := &RefundFlowLogDao{db: base.db}
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mock.ExpectBegin()
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mock.ExpectQuery("SELECT .* FROM `orders` .*FOR UPDATE").
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WillReturnRows(sqlmock.NewRows([]string{"id", "order_no", "user_id", "order_status"}).
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AddRow(8, "ORDER-1", 7, 6))
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mock.ExpectCommit()
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flow, allowed, err := dao.RefundApplyWithOrderStatus(context.Background(), "ORDER-1", "RF-NEW", "重复申请", 1234)
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if err != nil || allowed || flow != nil {
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t.Fatalf("allowed=%v flow=%v err=%v", allowed, flow, err)
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}
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if err := mock.ExpectationsWereMet(); err != nil {
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t.Fatal(err)
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}
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}
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// TestRefundApplyWithOrderStatusReusesFailedFlow 上次退款失败：复用旧流水并换新退款单号、重置为待处理。
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func TestRefundApplyWithOrderStatusReusesFailedFlow(t *testing.T) {
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base, mock := newQuotaTestDAO(t)
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dao := &RefundFlowLogDao{db: base.db}
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mock.ExpectBegin()
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mock.ExpectQuery("SELECT .* FROM `orders` .*FOR UPDATE").
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WillReturnRows(sqlmock.NewRows([]string{"id", "order_no", "user_id", "order_status", "pay_amount"}).
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AddRow(8, "ORDER-1", 7, 2, 990))
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mock.ExpectQuery("SELECT .* FROM `refund_flow_logs`").
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WillReturnRows(sqlmock.NewRows([]string{"id", "order_no", "user_id", "refund_no", "status"}).
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AddRow(5, "ORDER-1", 7, "RF-OLD", 3))
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mock.ExpectExec("UPDATE `refund_flow_logs` SET").WillReturnResult(sqlmock.NewResult(0, 1))
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mock.ExpectExec("UPDATE `orders` SET").WillReturnResult(sqlmock.NewResult(0, 1))
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mock.ExpectCommit()
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flow, allowed, err := dao.RefundApplyWithOrderStatus(context.Background(), "ORDER-1", "RF-NEW", "再次申请", 2222)
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if err != nil || !allowed {
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t.Fatalf("allowed=%v err=%v", allowed, err)
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}
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if flow == nil || flow.ID != 5 || flow.RefundNo != "RF-NEW" || flow.Status != 0 || flow.ApplyTime != 2222 {
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t.Fatalf("unexpected flow: %+v", flow)
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}
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if err := mock.ExpectationsWereMet(); err != nil {
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t.Fatal(err)
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}
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}
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// TestRefundApplyWithOrderStatusRejectsInProgressFlow 已有待处理/退款中/成功的流水时拒绝重复申请。
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func TestRefundApplyWithOrderStatusRejectsInProgressFlow(t *testing.T) {
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base, mock := newQuotaTestDAO(t)
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dao := &RefundFlowLogDao{db: base.db}
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mock.ExpectBegin()
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mock.ExpectQuery("SELECT .* FROM `orders` .*FOR UPDATE").
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WillReturnRows(sqlmock.NewRows([]string{"id", "order_no", "user_id", "order_status"}).
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AddRow(8, "ORDER-1", 7, 2))
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mock.ExpectQuery("SELECT .* FROM `refund_flow_logs`").
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WillReturnRows(sqlmock.NewRows([]string{"id", "order_no", "refund_no", "status"}).
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AddRow(5, "ORDER-1", "RF-OLD", 0))
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mock.ExpectCommit()
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flow, allowed, err := dao.RefundApplyWithOrderStatus(context.Background(), "ORDER-1", "RF-NEW", "重复申请", 1234)
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if err != nil || allowed || flow != nil {
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t.Fatalf("allowed=%v flow=%v err=%v", allowed, flow, err)
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}
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if err := mock.ExpectationsWereMet(); err != nil {
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t.Fatal(err)
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}
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}
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// TestOrderStatusRevertRefundingToPaid 退款失败回退依赖的条件流转：6 -> 2 仅在订单仍为 6 时生效。
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func TestOrderStatusRevertRefundingToPaid(t *testing.T) {
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for _, tc := range []struct {
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name string
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rows int64
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want bool
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}{
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{name: "still_refunding", rows: 1, want: true},
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{name: "already_settled", rows: 0, want: false},
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} {
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t.Run(tc.name, func(t *testing.T) {
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base, mock := newQuotaTestDAO(t)
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dao := &OrderDao{db: base.db}
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// gorm 默认把单条写语句包在事务里执行。
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mock.ExpectBegin()
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mock.ExpectExec("UPDATE `orders` SET .* WHERE \\(order_no = \\? AND order_status = \\?\\).*").
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WillReturnResult(sqlmock.NewResult(0, tc.rows))
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mock.ExpectCommit()
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ok, err := dao.OrderUpdateStatusByOrderNo(context.Background(), "ORDER-1", 6, 2)
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if err != nil || ok != tc.want {
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t.Fatalf("ok=%v err=%v, want %v", ok, err, tc.want)
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}
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if err := mock.ExpectationsWereMet(); err != nil {
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t.Fatal(err)
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}
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})
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}
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}
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// TestOrderListVirtualRefunding 退款查单兜底扫描：仅取「虚拟支付 + 申请退款中 + updated_at 早于水位」的订单。
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func TestOrderListVirtualRefunding(t *testing.T) {
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base, mock := newQuotaTestDAO(t)
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dao := &OrderDao{db: base.db}
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mock.ExpectQuery("SELECT .* FROM `orders` WHERE .*pay_channel = \\? AND order_status = \\? AND updated_at < \\?.*").
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WillReturnRows(sqlmock.NewRows([]string{"id", "order_no", "user_id", "order_status", "pay_channel", "updated_at"}).
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AddRow(8, "ORDER-1", 7, 6, 2, 900))
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orders, err := dao.OrderListVirtualRefunding(context.Background(), 1000, 50)
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if err != nil {
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t.Fatalf("unexpected error: %v", err)
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}
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if len(orders) != 1 || orders[0].OrderNo != "ORDER-1" || orders[0].OrderStatus != 6 {
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t.Fatalf("unexpected orders: %+v", orders)
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}
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if err := mock.ExpectationsWereMet(); err != nil {
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t.Fatal(err)
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}
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}
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// TestRefundSettlementAcceptsRefundingOrder 退款成功结算放行状态 6，并按「权益是否已发放」决定是否创建回收任务。
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func TestRefundSettlementAcceptsRefundingOrder(t *testing.T) {
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for _, tc := range []struct {
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name string
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orderStatus int8
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wantRevoke bool
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}{
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{name: "refunding_creates_revoke_task", orderStatus: 6, wantRevoke: true},
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{name: "cancelled_paid_skips_revoke_task", orderStatus: 3, wantRevoke: false},
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} {
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t.Run(tc.name, func(t *testing.T) {
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base, mock := newQuotaTestDAO(t)
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dao := &BenefitRevokeTaskDao{db: base.db}
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mock.ExpectBegin()
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mock.ExpectQuery("SELECT .* FROM `orders` .*FOR UPDATE").
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WillReturnRows(sqlmock.NewRows([]string{"id", "order_no", "user_id", "order_status"}).
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AddRow(8, "ORDER-1", 7, tc.orderStatus))
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mock.ExpectExec("UPDATE `orders` SET").WillReturnResult(sqlmock.NewResult(0, 1))
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mock.ExpectExec("UPDATE `benefit_grant_tasks` SET").WillReturnResult(sqlmock.NewResult(0, 2))
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if tc.wantRevoke {
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mock.ExpectExec("INSERT INTO `benefit_revoke_tasks`").WillReturnResult(sqlmock.NewResult(3, 1))
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}
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mock.ExpectCommit()
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settled, err := dao.RefundSettleWithRevokeTask(context.Background(), "ORDER-1", 990, 1234)
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if err != nil || !settled {
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t.Fatalf("settled=%v err=%v", settled, err)
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}
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if err := mock.ExpectationsWereMet(); err != nil {
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t.Fatal(err)
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}
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})
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}
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}
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// TestRefundSettlementSkipsAlreadyRefunded 已退款订单重复回调直接跳过（幂等，不重复回退权益）。
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func TestRefundSettlementSkipsAlreadyRefunded(t *testing.T) {
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base, mock := newQuotaTestDAO(t)
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dao := &BenefitRevokeTaskDao{db: base.db}
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mock.ExpectBegin()
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mock.ExpectQuery("SELECT .* FROM `orders` .*FOR UPDATE").
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WillReturnRows(sqlmock.NewRows([]string{"id", "order_no", "user_id", "order_status"}).
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AddRow(8, "ORDER-1", 7, 5))
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mock.ExpectCommit()
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settled, err := dao.RefundSettleWithRevokeTask(context.Background(), "ORDER-1", 990, 1234)
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if err != nil || settled {
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t.Fatalf("settled=%v err=%v", settled, err)
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}
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if err := mock.ExpectationsWereMet(); err != nil {
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t.Fatal(err)
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}
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}
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// TestRefundSettlementRejectsExpiredOrder 未支付流转而来的终态（如已过期 4）不允许结算为已退款。
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func TestRefundSettlementRejectsExpiredOrder(t *testing.T) {
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base, mock := newQuotaTestDAO(t)
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dao := &BenefitRevokeTaskDao{db: base.db}
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mock.ExpectBegin()
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mock.ExpectQuery("SELECT .* FROM `orders` .*FOR UPDATE").
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WillReturnRows(sqlmock.NewRows([]string{"id", "order_no", "user_id", "order_status"}).
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AddRow(8, "ORDER-1", 7, 4))
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mock.ExpectCommit()
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settled, err := dao.RefundSettleWithRevokeTask(context.Background(), "ORDER-1", 990, 1234)
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if err != nil || settled {
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t.Fatalf("settled=%v err=%v", settled, err)
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}
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if err := mock.ExpectationsWereMet(); err != nil {
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t.Fatal(err)
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}
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}
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