Tests: only delete test tables when generating the test database

Allows multiple Q2A instances in one database.

Author: svivian

qa-tests/Q2A_TestsSetup.php

@@ -114,7 +114,8 @@ private function recreateTables()
 		qa_db_query_sub(
 			'SELECT GROUP_CONCAT("`", table_name, "`") INTO @tables ' .
 			'FROM information_schema.tables ' .
-			'WHERE table_schema = (SELECT DATABASE())'
+			'WHERE table_schema = (SELECT DATABASE()) ' .
+			'AND table_name LIKE "' . QA_MYSQL_TABLE_PREFIX . '%"'
 		);
 		qa_db_query_sub('SELECT IFNULL(@tables, "dummy") INTO @tables');
 

qa-tests/phpunit-qa-config-example.php

@@ -7,5 +7,5 @@
 define('QA_MYSQL_PASSWORD', 'your-test-mysql-password');
 define('QA_MYSQL_DATABASE', 'your-test-mysql-db-name');
 
-define('QA_MYSQL_TABLE_PREFIX', 'qa_');
+define('QA_MYSQL_TABLE_PREFIX', 'qa_test_');
 define('QA_EXTERNAL_USERS', false);