multi: add UpdateAccountAliasForTests query

In the upcoming kvdb to SQL migration of the actions store, we need to
simulate in tests that two or more accounts have colliding account
aliases for the first 4 bytes of the alias. In order to allow creation
of such accounts, we need to be able to update the alias of an account
in tests, and this commit adds the a SQL query enabling this
functionality.

Note that the `UpdateAccountAliasForTests` query is only intended for
use in tests and should not be used in production code.

Author: ViktorT-11

accounts/store_sql.go

@@ -49,6 +49,9 @@ type SQLQueries interface {
 	UpdateAccountBalance(ctx context.Context, arg sqlc.UpdateAccountBalanceParams) (int64, error)
 	UpdateAccountExpiry(ctx context.Context, arg sqlc.UpdateAccountExpiryParams) (int64, error)
 	UpdateAccountLastUpdate(ctx context.Context, arg sqlc.UpdateAccountLastUpdateParams) (int64, error)
+	// UpdateAccountAliasForTests is a query intended only for testing
+	// purposes, to change the account alias.
+	UpdateAccountAliasForTests(ctx context.Context, arg sqlc.UpdateAccountAliasForTestsParams) (int64, error)
 	UpsertAccountPayment(ctx context.Context, arg sqlc.UpsertAccountPaymentParams) error
 	GetAccountInvoice(ctx context.Context, arg sqlc.GetAccountInvoiceParams) (sqlc.AccountInvoice, error)
 }

db/sqlc/accounts.sql.go

@@ -25,6 +25,13 @@ RETURNING id;
 INSERT INTO account_invoices (account_id, hash)
 VALUES ($1, $2);
 
+-- name: UpdateAccountAliasForTests :one
+-- NOTE: This query is only intended for testing purposes.
+UPDATE accounts
+SET alias = $1
+WHERE id = $2
+    RETURNING id;
+
 -- name: DeleteAccountPayment :exec
 DELETE FROM account_payments
 WHERE hash = $1