feat: manage merchant members

backend/internal/service/merchant_test.go

@@ -129,3 +129,48 @@ func TestDefaultMerchantRolesCanBeEdited(t *testing.T) {
 		t.Fatalf("unexpected updated role: %+v", updated)
 	}
 }
+
+func TestMemberCanBeUpdatedOrRemovedWithoutDeletingAccount(t *testing.T) {
+	db := newServiceTestDB(t)
+	merchant := model.Merchant{Code: "member-crud", Name: "成员管理商户", Status: model.MerchantStatusActive}
+	actor := model.User{Username: "member-crud-owner", PasswordHash: "hash", Role: model.RoleMerchant, Status: 1}
+	employee := model.User{Username: "member-crud-employee", PasswordHash: "hash", Role: model.RoleMerchant, Status: 1}
+	if err := db.Create(&merchant).Error; err != nil {
+		t.Fatalf("create merchant: %v", err)
+	}
+	if err := db.Create(&actor).Error; err != nil {
+		t.Fatalf("create actor: %v", err)
+	}
+	if err := db.Create(&employee).Error; err != nil {
+		t.Fatalf("create employee: %v", err)
+	}
+	if err := createDefaultMerchantRoles(db, merchant.ID); err != nil {
+		t.Fatalf("create default roles: %v", err)
+	}
+	member := model.MerchantMember{MerchantID: merchant.ID, UserID: employee.ID, Role: "support", Status: 1}
+	if err := db.Create(&member).Error; err != nil {
+		t.Fatalf("create member: %v", err)
+	}
+
+	svc := NewMerchantService(db, nil, NewTenantService(db))
+	updated, err := svc.UpdateMember(merchant.ID, member.ID, UpdateMemberInput{
+		Role: model.MemberRoleFinance, Status: 0, IsDefault: true,
+	}, actor.ID)
+	if err != nil {
+		t.Fatalf("update member: %v", err)
+	}
+	if updated.Role != model.MemberRoleFinance || updated.Status != 0 || !updated.IsDefault {
+		t.Fatalf("unexpected updated member: %+v", updated)
+	}
+	if err := svc.RemoveMember(merchant.ID, member.ID, actor.ID); err != nil {
+		t.Fatalf("remove member: %v", err)
+	}
+	var user model.User
+	if err := db.First(&user, employee.ID).Error; err != nil {
+		t.Fatalf("employee account should remain: %v", err)
+	}
+	var count int64
+	if err := db.Model(&model.MerchantMember{}).Where("id = ?", member.ID).Count(&count).Error; err != nil || count != 0 {
+		t.Fatalf("member relationship should be removed, count=%d err=%v", count, err)
+	}
+}