You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: main.go
    path of file: ./repos/mattermost/server/channels/app/plugin_api_tests/test_db_driver
    
    the code of the file until where you have to start completion: // Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
// See LICENSE.txt for license information.

package main_test

import (
	"database/sql"
	"testing"

	"github.com/mattermost/mattermost/server/public/model"
	"github.com/mattermost/mattermost/server/public/plugin"
	"github.com/mattermost/mattermost/server/public/shared/driver"
	"github.com/mattermost/mattermost/server/public/shared/request"
	"github.com/mattermost/mattermost/server/v8/channels/app/plugin_api_tests"
	"github.com/mattermost/mattermost/server/v8/channels/store/sqlstore"
	"github.com/mattermost/mattermost/server/v8/channels/store/storete
    
func (p *MyPlugin) MessageWillBePosted(_ *plugin.Context, _ *model.Post) (*model.Post, string) {
	rctx := request.TestContext(p.t)
	settings := p.API.GetUnsanitizedConfig().SqlSettings
	settings.Trace = model.NewBool(false)
	store, err := sqlstore.New(settings, rctx.Logger(), nil)
	if err != nil {
		panic(err)
	}
	store.GetMasterX().Close()

	for _, isMaster := range []bool{true, false} {
		handle := sql.OpenDB(driver.NewConnector(p.Driver, isMaster))
		store.SetMasterX(handle)

		wrapper := sqlstore.NewStoreTestWrapper(store)
		// Testing with a handful of stores
		storetest.TestPostStore(p.t, rctx, store, wrapper)
		storetest.TestUserStore(p.t, rctx, store, wrapper)
		storetest.TestTeamStore(p.t, rctx, store)
		storetest.TestChannelStore(p.t, rctx, store, wrapper)
		storetest.TestBotStore(p.t, rctx, store, wrapper)

		store.GetMasterX().Close()
	}

	// Use the API to instantiate the driver
	// And then run the full suite of tests.
	return nil, "OK"
}