tests: fix local_infile breaking change on MySQL 8

Readme.md

@@ -1377,6 +1377,14 @@ The following flags are sent by default on a new connection:
 - `SECURE_CONNECTION` - Support native 4.1 authentication.
 - `TRANSACTIONS` - Asks for the transaction status flags.
 
+The `local_infile` system variable is disabled by default since MySQL 8.0.2, which
+means the `LOCAL_FILES` flag will only make sense if the feature is explicitely
+enabled on the server.
+
+```sql
+SET GLOBAL local_infile = true;
+```
+
 In addition, the following flag will be sent if the option `multipleStatements`
 is set to `true`:
 

test/integration/connection/test-load-data-infile.js

@@ -11,6 +11,9 @@ common.getTestConnection(function (err, connection) {
 
   common.useTestDb(connection);
 
+  // "LOAD DATA LOCAL" is not allowed on MySQL 8 by default
+  connection.query('SET GLOBAL local_infile = true', assert.ifError);
+
   connection.query([
     'CREATE TEMPORARY TABLE ?? (',
     '`id` int(11) unsigned NOT NULL AUTO_INCREMENT,',

test/integration/connection/test-multiple-statements-load-data-infile.js

@@ -10,6 +10,8 @@ common.getTestConnection({multipleStatements: true}, function (err, connection)
 
   common.useTestDb(connection);
 
+  connection.query('SET GLOBAL local_infile = true', assert.ifError);
+
   connection.query([
     'CREATE TEMPORARY TABLE ?? (',
     '`id` int(11) unsigned NOT NULL AUTO_INCREMENT,',