Issue 534. Now properly handles command override for MySQL containers

Author: Nikem

modules/jdbc-test/src/test/java/org/testcontainers/junit/SimpleMySQLTest.java

@@ -94,6 +94,22 @@ public void testMySQLWithCustomIniFile() throws SQLException {
         }
     }
 
+    @Test
+    public void testCommandOverride() throws SQLException {
+        MySQLContainer mysqlCustomConfig = (MySQLContainer) new MySQLContainer().withCommand("mysqld --auto_increment_increment=42");
+        mysqlCustomConfig.start();
+
+        try {
+            ResultSet resultSet = performQuery(mysqlCustomConfig, "show variables like 'auto_increment_increment'");
+            String result = resultSet.getString("Value");
+
+            assertEquals("Auto increment increment should be overriden by command line", "42", result);
+        } finally {
+            mysqlCustomConfig.stop();
+        }
+
+    }
+
     @NonNull
     protected ResultSet performQuery(MySQLContainer containerRule, String sql) throws SQLException {
         HikariConfig hikariConfig = new HikariConfig();

modules/mysql/src/main/java/org/testcontainers/containers/MySQLContainer.java

@@ -20,6 +20,7 @@ public class MySQLContainer<SELF extends MySQLContainer<SELF>> extends JdbcDatab
 
     public MySQLContainer() {
         super(IMAGE + ":latest");
+        setCommand("mysqld");
     }
 
     public MySQLContainer(String dockerImageName) {
@@ -41,7 +42,6 @@ protected void configure() {
         addEnv("MYSQL_USER", username);
         addEnv("MYSQL_PASSWORD", password);
         addEnv("MYSQL_ROOT_PASSWORD", "test");
-        setCommand("mysqld");
         setStartupAttempts(3);
     }