budgit/internal/service/transaction_test.go
2026-05-17 14:30:59 +00:00

779 lines
27 KiB
Go

package service
import (
"encoding/json"
"testing"
"time"
"git.juancwu.dev/juancwu/budgit/internal/model"
"git.juancwu.dev/juancwu/budgit/internal/repository"
"git.juancwu.dev/juancwu/budgit/internal/testutil"
"github.com/shopspring/decimal"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
// txnFixture builds a fully wired TransactionService against a real DB along with
// the helper repos the tests need to inspect post-state.
type txnFixture struct {
svc *TransactionService
txAudit repository.TransactionAuditLogRepository
accounts repository.AccountRepository
user *model.User
account *model.Account
}
func newTxnFixture(t *testing.T, dbi testutil.DBInfo) *txnFixture {
t.Helper()
txnRepo := repository.NewTransactionRepository(dbi.DB)
categoryRepo := repository.NewCategoryRepository(dbi.DB)
accountRepo := repository.NewAccountRepository(dbi.DB)
allocationRepo := repository.NewAllocationRepository(dbi.DB)
auditRepo := repository.NewTransactionAuditLogRepository(dbi.DB)
accountSvc := NewAccountService(accountRepo)
accountSvc.SetAllocationRepository(allocationRepo)
allocationSvc := NewAllocationService(allocationRepo, accountSvc)
auditSvc := NewTransactionAuditLogService(auditRepo)
svc := NewTransactionService(txnRepo, categoryRepo, accountSvc)
svc.SetAuditLogger(auditSvc)
svc.SetAllocationService(allocationSvc)
user := testutil.CreateTestUser(t, dbi.DB, t.Name()+"@example.com", nil)
space := testutil.CreateTestSpace(t, dbi.DB, user.ID, "S")
account := testutil.CreateTestAccount(t, dbi.DB, space.ID, "Acct")
return &txnFixture{
svc: svc,
txAudit: auditRepo,
accounts: accountRepo,
user: user,
account: account,
}
}
func TestTransactionService_Deposit_RecordsAuditAndUpdatesBalance(t *testing.T) {
testutil.ForEachDB(t, func(t *testing.T, dbi testutil.DBInfo) {
f := newTxnFixture(t, dbi)
txn, err := f.svc.Deposit(DepositInput{
AccountID: f.account.ID,
Title: "Paycheck",
Amount: decimal.NewFromInt(100),
OccurredAt: time.Now(),
ActorID: f.user.ID,
})
require.NoError(t, err)
assert.True(t, decimal.NewFromInt(100).Equal(txn.Value))
updated, err := f.accounts.ByID(f.account.ID)
require.NoError(t, err)
assert.True(t, decimal.NewFromInt(100).Equal(updated.Balance))
logs, err := f.txAudit.ListByTransaction(txn.ID, 10, 0)
require.NoError(t, err)
require.Len(t, logs, 1)
assert.Equal(t, model.TransactionAuditActionCreated, logs[0].Action)
var meta map[string]any
require.NoError(t, json.Unmarshal(logs[0].Metadata, &meta))
assert.Equal(t, "deposit", meta["transaction_type"])
assert.Equal(t, f.account.ID, meta["account_id"])
assert.Equal(t, "Paycheck", meta["title"])
assert.Equal(t, "100.00", meta["amount"])
})
}
func TestTransactionService_PayBill_RecordsAuditAndDebitsBalance(t *testing.T) {
testutil.ForEachDB(t, func(t *testing.T, dbi testutil.DBInfo) {
f := newTxnFixture(t, dbi)
// Seed some balance via deposit.
_, err := f.svc.Deposit(DepositInput{
AccountID: f.account.ID, Title: "seed", Amount: decimal.NewFromInt(50), OccurredAt: time.Now(), ActorID: f.user.ID,
})
require.NoError(t, err)
txn, err := f.svc.PayBill(PayBillInput{
AccountID: f.account.ID,
Title: "Rent",
Amount: decimal.NewFromInt(20),
OccurredAt: time.Now(),
ActorID: f.user.ID,
})
require.NoError(t, err)
updated, err := f.accounts.ByID(f.account.ID)
require.NoError(t, err)
assert.True(t, decimal.NewFromInt(30).Equal(updated.Balance))
logs, err := f.txAudit.ListByTransaction(txn.ID, 10, 0)
require.NoError(t, err)
require.Len(t, logs, 1)
var meta map[string]any
require.NoError(t, json.Unmarshal(logs[0].Metadata, &meta))
assert.Equal(t, "withdrawal", meta["transaction_type"])
})
}
func TestTransactionService_UpdateDeposit_RebalancesAndDiffs(t *testing.T) {
testutil.ForEachDB(t, func(t *testing.T, dbi testutil.DBInfo) {
f := newTxnFixture(t, dbi)
original, err := f.svc.Deposit(DepositInput{
AccountID: f.account.ID, Title: "Old", Amount: decimal.NewFromInt(40),
OccurredAt: time.Date(2026, 1, 1, 0, 0, 0, 0, time.UTC),
ActorID: f.user.ID,
})
require.NoError(t, err)
_, err = f.svc.UpdateDeposit(UpdateDepositInput{
TransactionID: original.ID,
Title: "New",
Amount: decimal.NewFromInt(60), // +20 net
OccurredAt: time.Date(2026, 2, 2, 0, 0, 0, 0, time.UTC),
ActorID: f.user.ID,
})
require.NoError(t, err)
// Balance reflects the swap (40 → 60 means +20 from 40 baseline).
updated, err := f.accounts.ByID(f.account.ID)
require.NoError(t, err)
assert.True(t, decimal.NewFromInt(60).Equal(updated.Balance))
// 2 audit rows: created + edited (newest first).
logs, err := f.txAudit.ListByTransaction(original.ID, 10, 0)
require.NoError(t, err)
require.Len(t, logs, 2)
assert.Equal(t, model.TransactionAuditActionEdited, logs[0].Action)
var meta struct {
AccountID string `json:"account_id"`
Changes map[string]map[string]any `json:"changes"`
}
require.NoError(t, json.Unmarshal(logs[0].Metadata, &meta))
assert.Equal(t, f.account.ID, meta.AccountID)
assert.Contains(t, meta.Changes, "title")
assert.Equal(t, "Old", meta.Changes["title"]["old"])
assert.Equal(t, "New", meta.Changes["title"]["new"])
assert.Contains(t, meta.Changes, "amount")
assert.Equal(t, "40.00", meta.Changes["amount"]["old"])
assert.Equal(t, "60.00", meta.Changes["amount"]["new"])
assert.Contains(t, meta.Changes, "occurred_at")
})
}
func TestTransactionService_UpdateDeposit_NoChanges_NoAudit(t *testing.T) {
testutil.ForEachDB(t, func(t *testing.T, dbi testutil.DBInfo) {
f := newTxnFixture(t, dbi)
original, err := f.svc.Deposit(DepositInput{
AccountID: f.account.ID, Title: "Same", Amount: decimal.NewFromInt(10),
OccurredAt: time.Date(2026, 1, 1, 0, 0, 0, 0, time.UTC),
ActorID: f.user.ID,
})
require.NoError(t, err)
// Update with identical values.
_, err = f.svc.UpdateDeposit(UpdateDepositInput{
TransactionID: original.ID,
Title: "Same",
Amount: decimal.NewFromInt(10),
OccurredAt: time.Date(2026, 1, 1, 0, 0, 0, 0, time.UTC),
ActorID: f.user.ID,
})
require.NoError(t, err)
// Only the original `created` audit row exists; no `edited` row.
count, err := f.txAudit.CountByTransaction(original.ID)
require.NoError(t, err)
assert.Equal(t, 1, count)
})
}
func TestTransactionService_UpdateBill_RebalancesAndDiffs(t *testing.T) {
testutil.ForEachDB(t, func(t *testing.T, dbi testutil.DBInfo) {
f := newTxnFixture(t, dbi)
// Seed funds and then a bill.
_, err := f.svc.Deposit(DepositInput{
AccountID: f.account.ID, Title: "seed", Amount: decimal.NewFromInt(100), OccurredAt: time.Now(), ActorID: f.user.ID,
})
require.NoError(t, err)
bill, err := f.svc.PayBill(PayBillInput{
AccountID: f.account.ID, Title: "Cable", Amount: decimal.NewFromInt(30), OccurredAt: time.Now(), ActorID: f.user.ID,
})
require.NoError(t, err)
_, err = f.svc.UpdateBill(UpdateBillInput{
TransactionID: bill.ID,
Title: "Internet",
Amount: decimal.NewFromInt(40), // -10 vs original
OccurredAt: bill.OccurredAt,
ActorID: f.user.ID,
})
require.NoError(t, err)
// 100 - 40 = 60.
updated, err := f.accounts.ByID(f.account.ID)
require.NoError(t, err)
assert.True(t, decimal.NewFromInt(60).Equal(updated.Balance))
logs, err := f.txAudit.ListByTransaction(bill.ID, 10, 0)
require.NoError(t, err)
require.Len(t, logs, 2)
assert.Equal(t, model.TransactionAuditActionEdited, logs[0].Action)
})
}
func TestTransactionService_UpdateDeposit_RejectsBillTransaction(t *testing.T) {
testutil.ForEachDB(t, func(t *testing.T, dbi testutil.DBInfo) {
f := newTxnFixture(t, dbi)
_, err := f.svc.Deposit(DepositInput{
AccountID: f.account.ID, Title: "seed", Amount: decimal.NewFromInt(50), OccurredAt: time.Now(), ActorID: f.user.ID,
})
require.NoError(t, err)
bill, err := f.svc.PayBill(PayBillInput{
AccountID: f.account.ID, Title: "Bill", Amount: decimal.NewFromInt(10), OccurredAt: time.Now(), ActorID: f.user.ID,
})
require.NoError(t, err)
_, err = f.svc.UpdateDeposit(UpdateDepositInput{
TransactionID: bill.ID,
Title: "x",
Amount: decimal.NewFromInt(1),
OccurredAt: time.Now(),
ActorID: f.user.ID,
})
require.Error(t, err)
})
}
func TestTransactionService_Transfer_HappyPath(t *testing.T) {
testutil.ForEachDB(t, func(t *testing.T, dbi testutil.DBInfo) {
f := newTxnFixture(t, dbi)
dest := testutil.CreateTestAccount(t, dbi.DB, f.account.SpaceID, "Savings")
// Seed source so the transfer respects the available-balance constraint.
_, err := f.svc.Deposit(DepositInput{
AccountID: f.account.ID, Title: "seed", Amount: decimal.NewFromInt(50),
OccurredAt: time.Now(), ActorID: f.user.ID,
})
require.NoError(t, err)
result, err := f.svc.Transfer(TransferInput{
SourceAccountID: f.account.ID,
DestAccountID: dest.ID,
Title: "Move to savings",
Amount: decimal.NewFromInt(50),
OccurredAt: time.Now(),
ActorID: f.user.ID,
})
require.NoError(t, err)
require.NotNil(t, result.Withdrawal)
require.NotNil(t, result.Deposit)
assert.Equal(t, model.TransactionTypeWithdrawal, result.Withdrawal.Type)
assert.Equal(t, model.TransactionTypeDeposit, result.Deposit.Type)
assert.Equal(t, f.account.ID, result.Withdrawal.AccountID)
assert.Equal(t, dest.ID, result.Deposit.AccountID)
src, err := f.accounts.ByID(f.account.ID)
require.NoError(t, err)
assert.True(t, decimal.Zero.Equal(src.Balance))
dst, err := f.accounts.ByID(dest.ID)
require.NoError(t, err)
assert.True(t, decimal.NewFromInt(50).Equal(dst.Balance))
// Transactions are linked.
relatedID, err := f.svc.GetRelatedTransactionID(result.Withdrawal.ID)
require.NoError(t, err)
assert.Equal(t, result.Deposit.ID, relatedID)
// Audit recorded both sides with the right transfer_role and other-account name.
wlogs, err := f.txAudit.ListByTransaction(result.Withdrawal.ID, 10, 0)
require.NoError(t, err)
require.Len(t, wlogs, 1)
var wmeta map[string]any
require.NoError(t, json.Unmarshal(wlogs[0].Metadata, &wmeta))
assert.Equal(t, "source", wmeta["transfer_role"])
assert.Equal(t, result.Deposit.ID, wmeta["transfer_pair_id"])
assert.Equal(t, "Savings", wmeta["transfer_other_name"])
dlogs, err := f.txAudit.ListByTransaction(result.Deposit.ID, 10, 0)
require.NoError(t, err)
require.Len(t, dlogs, 1)
var dmeta map[string]any
require.NoError(t, json.Unmarshal(dlogs[0].Metadata, &dmeta))
assert.Equal(t, "destination", dmeta["transfer_role"])
assert.Equal(t, result.Withdrawal.ID, dmeta["transfer_pair_id"])
assert.Equal(t, "Acct", dmeta["transfer_other_name"])
})
}
func TestTransactionService_Transfer_RejectsOverdraft(t *testing.T) {
testutil.ForEachDB(t, func(t *testing.T, dbi testutil.DBInfo) {
f := newTxnFixture(t, dbi)
dest := testutil.CreateTestAccount(t, dbi.DB, f.account.SpaceID, "B")
// Seed source to 100, then attempt to transfer 200 — must be refused.
_, err := f.svc.Deposit(DepositInput{
AccountID: f.account.ID, Title: "seed", Amount: decimal.NewFromInt(100),
OccurredAt: time.Now(), ActorID: f.user.ID,
})
require.NoError(t, err)
_, err = f.svc.Transfer(TransferInput{
SourceAccountID: f.account.ID, DestAccountID: dest.ID,
Title: "T1", Amount: decimal.NewFromInt(200), OccurredAt: time.Now(), ActorID: f.user.ID,
})
require.ErrorIs(t, err, ErrTransferExceedsAvailable)
// Balances are untouched.
src, err := f.accounts.ByID(f.account.ID)
require.NoError(t, err)
assert.True(t, decimal.NewFromInt(100).Equal(src.Balance))
dst, err := f.accounts.ByID(dest.ID)
require.NoError(t, err)
assert.True(t, decimal.Zero.Equal(dst.Balance))
})
}
// TestTransactionService_Transfer_AppearsInAccountActivityFeeds is the regression
// test for "make sure activity logs are also created". The activity views on each
// account page and the space-level page merge transaction_audit_logs into a unified
// feed; this test exercises the full path end-to-end so silent gaps in audit
// recording or merging would fail.
func TestTransactionService_Transfer_AppearsInActivityFeeds(t *testing.T) {
testutil.ForEachDB(t, func(t *testing.T, dbi testutil.DBInfo) {
f := newTxnFixture(t, dbi)
dest := testutil.CreateTestAccount(t, dbi.DB, f.account.SpaceID, "Savings")
spaceAuditRepo := repository.NewSpaceAuditLogRepository(dbi.DB)
activitySvc := NewAccountActivityService(
NewSpaceAuditLogService(spaceAuditRepo),
NewTransactionAuditLogService(f.txAudit),
)
// Seed source so the transfer respects the available-balance constraint.
_, err := f.svc.Deposit(DepositInput{
AccountID: f.account.ID, Title: "seed", Amount: decimal.NewFromInt(75),
OccurredAt: time.Now(), ActorID: f.user.ID,
})
require.NoError(t, err)
result, err := f.svc.Transfer(TransferInput{
SourceAccountID: f.account.ID,
DestAccountID: dest.ID,
Title: "Move to savings",
Amount: decimal.NewFromInt(75),
OccurredAt: time.Now(),
ActorID: f.user.ID,
})
require.NoError(t, err)
// Source account activity sees the withdrawal half (newest first; the
// seed deposit appears below).
srcRows, err := activitySvc.List(f.account.ID, 10, 0)
require.NoError(t, err)
require.Len(t, srcRows, 2, "source account feed should include the seed deposit and the withdrawal half")
require.NotNil(t, srcRows[0].TxLog)
assert.Equal(t, result.Withdrawal.ID, srcRows[0].TxLog.TransactionID)
assertTransferRole(t, srcRows[0].TxLog, "source", dest.ID)
// Destination account activity sees the deposit half.
dstRows, err := activitySvc.List(dest.ID, 10, 0)
require.NoError(t, err)
require.Len(t, dstRows, 1, "destination account feed should include the deposit half")
require.NotNil(t, dstRows[0].TxLog)
assert.Equal(t, result.Deposit.ID, dstRows[0].TxLog.TransactionID)
assertTransferRole(t, dstRows[0].TxLog, "destination", f.account.ID)
// Space-level activity feed sees both transfer halves alongside the seed.
spaceRows, err := activitySvc.ListSpace(f.account.SpaceID, 10, 0)
require.NoError(t, err)
require.Len(t, spaceRows, 3, "space feed should include the seed deposit and both transfer halves")
ids := []string{}
for _, r := range spaceRows {
require.NotNil(t, r.TxLog)
ids = append(ids, r.TxLog.TransactionID)
}
assert.Contains(t, ids, result.Withdrawal.ID)
assert.Contains(t, ids, result.Deposit.ID)
// Counts agree with what the feed returns (pagination relies on this).
srcCount, err := activitySvc.Count(f.account.ID)
require.NoError(t, err)
assert.Equal(t, 2, srcCount)
dstCount, err := activitySvc.Count(dest.ID)
require.NoError(t, err)
assert.Equal(t, 1, dstCount)
spaceCount, err := activitySvc.CountSpace(f.account.SpaceID)
require.NoError(t, err)
assert.Equal(t, 3, spaceCount)
})
}
func assertTransferRole(t *testing.T, log *model.TransactionAuditLogWithActor, expectedRole, expectedOtherAcctID string) {
t.Helper()
var meta map[string]any
require.NoError(t, json.Unmarshal(log.Metadata, &meta))
assert.Equal(t, expectedRole, meta["transfer_role"])
assert.Equal(t, expectedOtherAcctID, meta["transfer_other_acct"])
}
func TestTransactionService_Transfer_RejectsSameAccount(t *testing.T) {
testutil.ForEachDB(t, func(t *testing.T, dbi testutil.DBInfo) {
f := newTxnFixture(t, dbi)
_, err := f.svc.Transfer(TransferInput{
SourceAccountID: f.account.ID,
DestAccountID: f.account.ID,
Title: "Self",
Amount: decimal.NewFromInt(10),
OccurredAt: time.Now(),
ActorID: f.user.ID,
})
assert.Error(t, err)
})
}
func TestTransactionService_Transfer_RejectsNonPositiveAmount(t *testing.T) {
testutil.ForEachDB(t, func(t *testing.T, dbi testutil.DBInfo) {
f := newTxnFixture(t, dbi)
dest := testutil.CreateTestAccount(t, dbi.DB, f.account.SpaceID, "B")
_, err := f.svc.Transfer(TransferInput{
SourceAccountID: f.account.ID, DestAccountID: dest.ID,
Title: "x", Amount: decimal.NewFromInt(0), OccurredAt: time.Now(), ActorID: f.user.ID,
})
assert.Error(t, err)
})
}
func TestTransactionService_Update_RejectsTransferTransactions(t *testing.T) {
testutil.ForEachDB(t, func(t *testing.T, dbi testutil.DBInfo) {
f := newTxnFixture(t, dbi)
dest := testutil.CreateTestAccount(t, dbi.DB, f.account.SpaceID, "Savings")
_, err := f.svc.Deposit(DepositInput{
AccountID: f.account.ID, Title: "seed", Amount: decimal.NewFromInt(20),
OccurredAt: time.Now(), ActorID: f.user.ID,
})
require.NoError(t, err)
result, err := f.svc.Transfer(TransferInput{
SourceAccountID: f.account.ID,
DestAccountID: dest.ID,
Title: "Initial",
Amount: decimal.NewFromInt(20),
OccurredAt: time.Now(),
ActorID: f.user.ID,
})
require.NoError(t, err)
// The withdrawal half cannot be edited via UpdateBill.
_, err = f.svc.UpdateBill(UpdateBillInput{
TransactionID: result.Withdrawal.ID,
Title: "tampered",
Amount: decimal.NewFromInt(99),
OccurredAt: time.Now(),
ActorID: f.user.ID,
})
require.ErrorIs(t, err, ErrTransactionPartOfTransfer)
// The deposit half cannot be edited via UpdateDeposit.
_, err = f.svc.UpdateDeposit(UpdateDepositInput{
TransactionID: result.Deposit.ID,
Title: "tampered",
Amount: decimal.NewFromInt(99),
OccurredAt: time.Now(),
ActorID: f.user.ID,
})
require.ErrorIs(t, err, ErrTransactionPartOfTransfer)
// Underlying transaction is untouched (no audit `edited` row added either).
count, err := f.txAudit.CountByTransaction(result.Withdrawal.ID)
require.NoError(t, err)
assert.Equal(t, 1, count, "only the original `created` audit row should exist")
})
}
func TestTransactionService_DeleteTransaction_Bill_CreditsBalance(t *testing.T) {
testutil.ForEachDB(t, func(t *testing.T, dbi testutil.DBInfo) {
f := newTxnFixture(t, dbi)
// Seed 100 then pay a 30 bill, leaving balance at 70.
_, err := f.svc.Deposit(DepositInput{
AccountID: f.account.ID, Title: "seed", Amount: decimal.NewFromInt(100),
OccurredAt: time.Now(), ActorID: f.user.ID,
})
require.NoError(t, err)
bill, err := f.svc.PayBill(PayBillInput{
AccountID: f.account.ID, Title: "Cable", Amount: decimal.NewFromInt(30),
OccurredAt: time.Now(), ActorID: f.user.ID,
})
require.NoError(t, err)
updated, err := f.accounts.ByID(f.account.ID)
require.NoError(t, err)
require.True(t, decimal.NewFromInt(70).Equal(updated.Balance))
deleted, err := f.svc.DeleteTransaction(DeleteTransactionInput{
TransactionID: bill.ID,
ActorID: f.user.ID,
})
require.NoError(t, err)
assert.Equal(t, bill.ID, deleted.ID)
// 70 + 30 = 100 (credit back).
updated, err = f.accounts.ByID(f.account.ID)
require.NoError(t, err)
assert.True(t, decimal.NewFromInt(100).Equal(updated.Balance))
// Transaction is gone.
_, err = f.svc.GetTransaction(bill.ID)
assert.Error(t, err)
// Audit log records the deletion (created + deleted, newest first).
logs, err := f.txAudit.ListByTransaction(bill.ID, 10, 0)
require.NoError(t, err)
require.Len(t, logs, 2)
assert.Equal(t, model.TransactionAuditActionDeleted, logs[0].Action)
var meta map[string]any
require.NoError(t, json.Unmarshal(logs[0].Metadata, &meta))
assert.Equal(t, "withdrawal", meta["transaction_type"])
assert.Equal(t, f.account.ID, meta["account_id"])
assert.Equal(t, "Cable", meta["title"])
assert.Equal(t, "30.00", meta["amount"])
})
}
func TestTransactionService_DeleteTransaction_Deposit_DebitsBalance(t *testing.T) {
testutil.ForEachDB(t, func(t *testing.T, dbi testutil.DBInfo) {
f := newTxnFixture(t, dbi)
dep, err := f.svc.Deposit(DepositInput{
AccountID: f.account.ID, Title: "Paycheck", Amount: decimal.NewFromInt(150),
OccurredAt: time.Now(), ActorID: f.user.ID,
})
require.NoError(t, err)
updated, err := f.accounts.ByID(f.account.ID)
require.NoError(t, err)
require.True(t, decimal.NewFromInt(150).Equal(updated.Balance))
_, err = f.svc.DeleteTransaction(DeleteTransactionInput{
TransactionID: dep.ID,
ActorID: f.user.ID,
})
require.NoError(t, err)
// 150 - 150 = 0.
updated, err = f.accounts.ByID(f.account.ID)
require.NoError(t, err)
assert.True(t, decimal.Zero.Equal(updated.Balance))
logs, err := f.txAudit.ListByTransaction(dep.ID, 10, 0)
require.NoError(t, err)
require.Len(t, logs, 2)
assert.Equal(t, model.TransactionAuditActionDeleted, logs[0].Action)
var meta map[string]any
require.NoError(t, json.Unmarshal(logs[0].Metadata, &meta))
assert.Equal(t, "deposit", meta["transaction_type"])
})
}
func TestTransactionService_DeleteTransaction_RejectsTransferHalves(t *testing.T) {
testutil.ForEachDB(t, func(t *testing.T, dbi testutil.DBInfo) {
f := newTxnFixture(t, dbi)
dest := testutil.CreateTestAccount(t, dbi.DB, f.account.SpaceID, "Savings")
_, err := f.svc.Deposit(DepositInput{
AccountID: f.account.ID, Title: "seed", Amount: decimal.NewFromInt(20),
OccurredAt: time.Now(), ActorID: f.user.ID,
})
require.NoError(t, err)
result, err := f.svc.Transfer(TransferInput{
SourceAccountID: f.account.ID,
DestAccountID: dest.ID,
Title: "Initial",
Amount: decimal.NewFromInt(20),
OccurredAt: time.Now(),
ActorID: f.user.ID,
})
require.NoError(t, err)
_, err = f.svc.DeleteTransaction(DeleteTransactionInput{
TransactionID: result.Withdrawal.ID,
ActorID: f.user.ID,
})
require.ErrorIs(t, err, ErrTransactionPartOfTransfer)
_, err = f.svc.DeleteTransaction(DeleteTransactionInput{
TransactionID: result.Deposit.ID,
ActorID: f.user.ID,
})
require.ErrorIs(t, err, ErrTransactionPartOfTransfer)
// Both halves still exist with untouched balances and no extra audit rows.
_, err = f.svc.GetTransaction(result.Withdrawal.ID)
require.NoError(t, err)
_, err = f.svc.GetTransaction(result.Deposit.ID)
require.NoError(t, err)
src, err := f.accounts.ByID(f.account.ID)
require.NoError(t, err)
assert.True(t, decimal.Zero.Equal(src.Balance))
dst, err := f.accounts.ByID(dest.ID)
require.NoError(t, err)
assert.True(t, decimal.NewFromInt(20).Equal(dst.Balance))
count, err := f.txAudit.CountByTransaction(result.Withdrawal.ID)
require.NoError(t, err)
assert.Equal(t, 1, count)
})
}
func TestTransactionService_DeleteTransaction_RemovesCategoryLink(t *testing.T) {
testutil.ForEachDB(t, func(t *testing.T, dbi testutil.DBInfo) {
f := newTxnFixture(t, dbi)
categories, err := f.svc.ListCategories()
require.NoError(t, err)
require.NotEmpty(t, categories, "expected at least one seeded category")
categoryID := categories[0].ID
_, err = f.svc.Deposit(DepositInput{
AccountID: f.account.ID, Title: "seed", Amount: decimal.NewFromInt(100),
OccurredAt: time.Now(), ActorID: f.user.ID,
})
require.NoError(t, err)
bill, err := f.svc.PayBill(PayBillInput{
AccountID: f.account.ID,
Title: "Groceries",
Amount: decimal.NewFromInt(40),
OccurredAt: time.Now(),
CategoryID: categoryID,
ActorID: f.user.ID,
})
require.NoError(t, err)
got, err := f.svc.GetTransactionCategoryID(bill.ID)
require.NoError(t, err)
require.Equal(t, categoryID, got)
_, err = f.svc.DeleteTransaction(DeleteTransactionInput{
TransactionID: bill.ID,
ActorID: f.user.ID,
})
require.NoError(t, err)
// transaction_categories cascades on the FK; the link is gone.
got, err = f.svc.GetTransactionCategoryID(bill.ID)
require.NoError(t, err)
assert.Equal(t, "", got)
})
}
func TestTransactionService_DeleteTransaction_RequiresID(t *testing.T) {
testutil.ForEachDB(t, func(t *testing.T, dbi testutil.DBInfo) {
f := newTxnFixture(t, dbi)
_, err := f.svc.DeleteTransaction(DeleteTransactionInput{ActorID: f.user.ID})
assert.Error(t, err)
})
}
func TestTransactionService_Transfer_RejectsExceedingAvailable(t *testing.T) {
testutil.ForEachDB(t, func(t *testing.T, dbi testutil.DBInfo) {
f := newTxnFixture(t, dbi)
dest := testutil.CreateTestAccount(t, dbi.DB, f.account.SpaceID, "Savings")
allocRepo := repository.NewAllocationRepository(dbi.DB)
allocSvc := NewAllocationService(allocRepo, NewAccountService(repository.NewAccountRepository(dbi.DB)))
allocSvc.SetAuditLogger(NewSpaceAuditLogService(repository.NewSpaceAuditLogRepository(dbi.DB)))
// Source: balance 100, allocate 60 → available 40.
_, err := f.svc.Deposit(DepositInput{
AccountID: f.account.ID, Title: "seed", Amount: decimal.NewFromInt(100),
OccurredAt: time.Now(), ActorID: f.user.ID,
})
require.NoError(t, err)
_, err = allocSvc.Create(CreateAllocationInput{
AccountID: f.account.ID, Name: "Rent", Amount: decimal.NewFromInt(60), ActorID: f.user.ID,
})
require.NoError(t, err)
// 50 > 40 available, must be refused.
_, err = f.svc.Transfer(TransferInput{
SourceAccountID: f.account.ID, DestAccountID: dest.ID,
Title: "Too much", Amount: decimal.NewFromInt(50), OccurredAt: time.Now(), ActorID: f.user.ID,
})
require.ErrorIs(t, err, ErrTransferExceedsAvailable)
// Balances untouched.
src, err := f.accounts.ByID(f.account.ID)
require.NoError(t, err)
assert.True(t, decimal.NewFromInt(100).Equal(src.Balance))
dst, err := f.accounts.ByID(dest.ID)
require.NoError(t, err)
assert.True(t, decimal.Zero.Equal(dst.Balance))
// 40 (== available) is allowed.
_, err = f.svc.Transfer(TransferInput{
SourceAccountID: f.account.ID, DestAccountID: dest.ID,
Title: "Exact", Amount: decimal.NewFromInt(40), OccurredAt: time.Now(), ActorID: f.user.ID,
})
require.NoError(t, err)
src, err = f.accounts.ByID(f.account.ID)
require.NoError(t, err)
assert.True(t, decimal.NewFromInt(60).Equal(src.Balance))
dst, err = f.accounts.ByID(dest.ID)
require.NoError(t, err)
assert.True(t, decimal.NewFromInt(40).Equal(dst.Balance))
})
}
func TestTransactionService_Transfer_AllowsUpToAvailable_NoAllocations(t *testing.T) {
testutil.ForEachDB(t, func(t *testing.T, dbi testutil.DBInfo) {
f := newTxnFixture(t, dbi)
dest := testutil.CreateTestAccount(t, dbi.DB, f.account.SpaceID, "Savings")
// With no allocations, available == balance, so transferring the full
// balance is allowed but transferring more is not.
_, err := f.svc.Deposit(DepositInput{
AccountID: f.account.ID, Title: "seed", Amount: decimal.NewFromInt(30),
OccurredAt: time.Now(), ActorID: f.user.ID,
})
require.NoError(t, err)
_, err = f.svc.Transfer(TransferInput{
SourceAccountID: f.account.ID, DestAccountID: dest.ID,
Title: "Over", Amount: decimal.NewFromInt(31), OccurredAt: time.Now(), ActorID: f.user.ID,
})
require.ErrorIs(t, err, ErrTransferExceedsAvailable)
_, err = f.svc.Transfer(TransferInput{
SourceAccountID: f.account.ID, DestAccountID: dest.ID,
Title: "Full", Amount: decimal.NewFromInt(30), OccurredAt: time.Now(), ActorID: f.user.ID,
})
require.NoError(t, err)
})
}
func TestTransactionService_Validations(t *testing.T) {
testutil.ForEachDB(t, func(t *testing.T, dbi testutil.DBInfo) {
f := newTxnFixture(t, dbi)
_, err := f.svc.Deposit(DepositInput{AccountID: f.account.ID, Amount: decimal.NewFromInt(1), OccurredAt: time.Now()})
assert.Error(t, err, "blank title")
_, err = f.svc.Deposit(DepositInput{AccountID: f.account.ID, Title: "x", Amount: decimal.NewFromInt(0), OccurredAt: time.Now()})
assert.Error(t, err, "zero amount")
_, err = f.svc.Deposit(DepositInput{AccountID: f.account.ID, Title: "x", Amount: decimal.NewFromInt(1)})
assert.Error(t, err, "missing date")
_, err = f.svc.PayBill(PayBillInput{Title: "x", Amount: decimal.NewFromInt(1), OccurredAt: time.Now()})
assert.Error(t, err, "missing account id")
})
}