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vendor/laravel/sail/database/mysql/create-testing-database.sh

@@ -0,0 +1,6 @@
+#!/usr/bin/env bash
+
+mysql --user=root --password="$MYSQL_ROOT_PASSWORD" <<-EOSQL
+    CREATE DATABASE IF NOT EXISTS testing;
+    GRANT ALL PRIVILEGES ON \`testing%\`.* TO '$MYSQL_USER'@'%';
+EOSQL

vendor/laravel/sail/database/pgsql/create-testing-database.sql

@@ -0,0 +1,2 @@
+SELECT 'CREATE DATABASE testing'
+WHERE NOT EXISTS (SELECT FROM pg_database WHERE datname = 'testing')\gexec