From 8b1b2501d3cdf111cdd8ccd24a6a11573dd4b4cf Mon Sep 17 00:00:00 2001
From: Alexander Medvednikov <alexander@medvednikov.com>
Date: Sat, 18 Apr 2026 23:55:09 +0300
Subject: [PATCH] mysql: fix tests

---
 vlib/crypto/sha512/sha512block_generic.v |  2 +-
 vlib/db/mysql/README.md                  |  6 +++---
 vlib/db/mysql/mysql.c.v                  | 14 +++++++-------
 vlib/db/mysql/prepared_stmt_test.v       |  4 ++--
 4 files changed, 13 insertions(+), 13 deletions(-)

diff --git a/vlib/crypto/sha512/sha512block_generic.v b/vlib/crypto/sha512/sha512block_generic.v
index 90e1eff35..0021eab17 100644
--- a/vlib/crypto/sha512/sha512block_generic.v
+++ b/vlib/crypto/sha512/sha512block_generic.v
@@ -38,7 +38,7 @@ const _k = [
 fn block_generic(mut dig Digest, p_ []u8) {
 	unsafe {
 		mut p := p_
-		mut w := []u64{len: 80}
+		mut w := [80]u64{}
 		mut h0 := dig.h[0]
 		mut h1 := dig.h[1]
 		mut h2 := dig.h[2]
diff --git a/vlib/db/mysql/README.md b/vlib/db/mysql/README.md
index 432f1ff29..9382dd85a 100644
--- a/vlib/db/mysql/README.md
+++ b/vlib/db/mysql/README.md
@@ -8,12 +8,12 @@ MySQL or MariaDB database servers.
 To run the mysql module tests, or if you want to just experiment, you can use the following
 command to start a development version of MySQL using docker:
 ```sh
-docker run -p 3306:3306 --name some-mysql -e MYSQL_ALLOW_EMPTY_PASSWORD=1 -e MYSQL_ROOT_PASSWORD= -d mysql:latest
+docker run -p 3306:3306 --name some-mysql -e MYSQL_ROOT_PASSWORD=12345678 -d mysql:latest
 ```
-The above command will start a server instance without any password for its root account,
+The above command will start a server instance with the root password `12345678`,
 available to mysql client connections, on tcp port 3306.
 
-You can test that it works by doing: `mysql -uroot -h127.0.0.1` .
+You can test that it works by doing: `mysql -uroot -p12345678 -h127.0.0.1` .
 You should see a mysql shell (use `exit` to end the mysql client session).
 
 Use `docker container stop some-mysql` to stop the server.
diff --git a/vlib/db/mysql/mysql.c.v b/vlib/db/mysql/mysql.c.v
index 6fda91948..f0a8405d3 100644
--- a/vlib/db/mysql/mysql.c.v
+++ b/vlib/db/mysql/mysql.c.v
@@ -218,7 +218,7 @@ pub fn (mut db DB) autocommit(mode bool) ! {
 }
 
 // commit commits the current transaction.
-pub fn (mut db DB) commit() ! {
+pub fn (db &DB) commit() ! {
 	db.check_connection_is_established()!
 	result := C.mysql_commit(db.conn)
 
@@ -233,7 +233,7 @@ pub struct MySQLTransactionParam {
 }
 
 // begin begins a new transaction.
-pub fn (mut db DB) begin(param MySQLTransactionParam) ! {
+pub fn (db &DB) begin(param MySQLTransactionParam) ! {
 	db.check_connection_is_established()!
 	db.set_transaction_level(param.transaction_level)!
 	result := db.exec_none('START TRANSACTION')
@@ -243,7 +243,7 @@ pub fn (mut db DB) begin(param MySQLTransactionParam) ! {
 }
 
 // set_transaction_level set level for the transaction
-pub fn (mut db DB) set_transaction_level(level MySQLTransactionLevel) ! {
+pub fn (db &DB) set_transaction_level(level MySQLTransactionLevel) ! {
 	db.check_connection_is_established()!
 	mut sql_stmt := 'SET TRANSACTION ISOLATION LEVEL '
 	match level {
@@ -260,7 +260,7 @@ pub fn (mut db DB) set_transaction_level(level MySQLTransactionLevel) ! {
 }
 
 // rollback rollbacks the current transaction.
-pub fn (mut db DB) rollback() ! {
+pub fn (db &DB) rollback() ! {
 	db.check_connection_is_established()!
 	result := C.mysql_rollback(db.conn)
 
@@ -270,7 +270,7 @@ pub fn (mut db DB) rollback() ! {
 }
 
 // rollback_to rollbacks to a specified savepoint.
-pub fn (mut db DB) rollback_to(savepoint string) ! {
+pub fn (db &DB) rollback_to(savepoint string) ! {
 	if !savepoint.is_identifier() {
 		return error('savepoint should be a identifier string')
 	}
@@ -282,7 +282,7 @@ pub fn (mut db DB) rollback_to(savepoint string) ! {
 }
 
 // savepoint create a new savepoint.
-pub fn (mut db DB) savepoint(savepoint string) ! {
+pub fn (db &DB) savepoint(savepoint string) ! {
 	if !savepoint.is_identifier() {
 		return error('savepoint should be a identifier string')
 	}
@@ -294,7 +294,7 @@ pub fn (mut db DB) savepoint(savepoint string) ! {
 }
 
 // release_savepoint releases a specified savepoint.
-pub fn (mut db DB) release_savepoint(savepoint string) ! {
+pub fn (db &DB) release_savepoint(savepoint string) ! {
 	if !savepoint.is_identifier() {
 		return error('savepoint should be a identifier string')
 	}
diff --git a/vlib/db/mysql/prepared_stmt_test.v b/vlib/db/mysql/prepared_stmt_test.v
index 4ce0f06b8..eb5071339 100644
--- a/vlib/db/mysql/prepared_stmt_test.v
+++ b/vlib/db/mysql/prepared_stmt_test.v
@@ -111,7 +111,7 @@ fn test_stmt_prepare_returns_mysql_error_code() {
 		host:     '127.0.0.1'
 		port:     3306
 		username: 'root'
-		password: ''
+		password: '12345678'
 		dbname:   'mysql'
 	}
 
@@ -141,7 +141,7 @@ fn test_prepare_execute_returns_mysql_error_code() {
 		host:     '127.0.0.1'
 		port:     3306
 		username: 'root'
-		password: ''
+		password: '12345678'
 		dbname:   'mysql'
 	}
 
-- 
2.39.5