fix(balances): missing delimiters for regexp

pkg/storage/sqlstorage/balances.go

@@ -131,7 +131,7 @@ func (s *Store) GetBalances(ctx context.Context, q ledger.BalancesQuery) (api.Cu
 						continue
 					}
 
-					arg := sb.Args.Add(strings.ReplaceAll(segment, "\\", "\\\\"))
+					arg := sb.Args.Add("^" + strings.ReplaceAll(segment, "\\", "\\\\") + "$")
 					sb.Where(fmt.Sprintf("account_json @@ ('$[%d] like_regex \"' || %s::text || '\"')::jsonpath", i, arg))
 				}
 			} else {

pkg/storage/sqlstorage/balances_test.go

@@ -15,9 +15,31 @@ import (
 )
 
 func testGetBalances(t *testing.T, store *sqlstorage.Store) {
-	err := store.Commit(context.Background(), tx1, tx2, tx3)
+	err := store.Commit(context.Background(), tx1, tx2, tx3, tx4)
 	require.NoError(t, err)
 
+	t.Run("on 1 accounts", func(t *testing.T) {
+		cursor, err := store.GetBalances(context.Background(),
+			ledger.BalancesQuery{
+				Filters: ledger.BalancesQueryFilters{
+					AddressRegexp: []string{"users:1"},
+				},
+				PageSize: 10,
+			})
+		assert.NoError(t, err)
+		assert.Equal(t, 10, cursor.PageSize)
+		assert.Equal(t, false, cursor.HasMore)
+		assert.Equal(t, "", cursor.Previous)
+		assert.Equal(t, "", cursor.Next)
+		assert.Equal(t, []core.AccountsBalances{
+			{
+				"users:1": core.AssetsBalances{
+					"USD": core.NewMonetaryInt(1),
+				},
+			},
+		}, cursor.Data)
+	})
+
 	t.Run("all accounts", func(t *testing.T) {
 		cursor, err := store.GetBalances(context.Background(),
 			ledger.BalancesQuery{

pkg/storage/sqlstorage/store_ledger_test.go

@@ -229,6 +229,55 @@ var tx3 = core.ExpandedTransaction{
 	},
 }
 
+var tx4 = core.ExpandedTransaction{
+	Transaction: core.Transaction{
+		ID: 3,
+		TransactionData: core.TransactionData{
+			Postings: []core.Posting{
+				{
+					Source:      "central_bank",
+					Destination: "users:11",
+					Amount:      core.NewMonetaryInt(1),
+					Asset:       "USD",
+				},
+			},
+			Reference: "tx4",
+			Metadata: core.Metadata{
+				"priority": json.RawMessage(`"high"`),
+			},
+			Timestamp: now.Add(-1 * time.Hour),
+		},
+	},
+	PreCommitVolumes: core.AccountsAssetsVolumes{
+		"central_bank": {
+			"USD": {
+				Input:  core.NewMonetaryInt(200),
+				Output: core.NewMonetaryInt(0),
+			},
+		},
+		"users:11": {
+			"USD": {
+				Input:  core.NewMonetaryInt(0),
+				Output: core.NewMonetaryInt(0),
+			},
+		},
+	},
+	PostCommitVolumes: core.AccountsAssetsVolumes{
+		"central_bank": {
+			"USD": {
+				Input:  core.NewMonetaryInt(200),
+				Output: core.NewMonetaryInt(1),
+			},
+		},
+		"users:11": {
+			"USD": {
+				Input:  core.NewMonetaryInt(1),
+				Output: core.NewMonetaryInt(0),
+			},
+		},
+	},
+}
+
 func testCommit(t *testing.T, store *sqlstorage.Store) {
 	tx := core.ExpandedTransaction{
 		Transaction: core.Transaction{