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编辑当前文件:/home/qrafawbu/www/vendor/laravel/framework/src/Illuminate/Foundation/Testing/RefreshDatabase.php

<?php

namespace Illuminate\Foundation\Testing;

use Illuminate\Contracts\Console\Kernel;

trait RefreshDatabase
{
    /**
     * Define hooks to migrate the database before and after each test.
     *
     * @return void
     */
    public function refreshDatabase()
    {
        $this->usingInMemoryDatabase()
                        ? $this->refreshInMemoryDatabase()
                        : $this->refreshTestDatabase();
    }

/**
     * Determine if an in-memory database is being used.
     *
     * @return bool
     */
    protected function usingInMemoryDatabase()
    {
        $default = config('database.default');

return config("database.connections.$default.database") === ':memory:';
    }

/**
     * Refresh the in-memory database.
     *
     * @return void
     */
    protected function refreshInMemoryDatabase()
    {
        $this->artisan('migrate', $this->migrateUsing());

$this->app[Kernel::class]->setArtisan(null);
    }

/**
     * The parameters that should be used when running "migrate".
     *
     * @return array
     */
    protected function migrateUsing()
    {
        return [
            '--seed' => $this->shouldSeed(),
        ];
    }

/**
     * Refresh a conventional test database.
     *
     * @return void
     */
    protected function refreshTestDatabase()
    {
        if (! RefreshDatabaseState::$migrated) {
            $this->artisan('migrate:fresh', $this->migrateFreshUsing());

$this->app[Kernel::class]->setArtisan(null);

RefreshDatabaseState::$migrated = true;
        }

$this->beginDatabaseTransaction();
    }

/**
     * The parameters that should be used when running "migrate:fresh".
     *
     * @return array
     */
    protected function migrateFreshUsing()
    {
        $seeder = $this->seeder();

return array_merge(
            [
                '--drop-views' => $this->shouldDropViews(),
                '--drop-types' => $this->shouldDropTypes(),
            ],
            $seeder ? ['--seeder' => $seeder] : ['--seed' => $this->shouldSeed()]
        );
    }

/**
     * Begin a database transaction on the testing database.
     *
     * @return void
     */
    public function beginDatabaseTransaction()
    {
        $database = $this->app->make('db');

foreach ($this->connectionsToTransact() as $name) {
            $connection = $database->connection($name);
            $dispatcher = $connection->getEventDispatcher();

$connection->unsetEventDispatcher();
            $connection->beginTransaction();
            $connection->setEventDispatcher($dispatcher);
        }

$this->beforeApplicationDestroyed(function () use ($database) {
            foreach ($this->connectionsToTransact() as $name) {
                $connection = $database->connection($name);
                $dispatcher = $connection->getEventDispatcher();

$connection->unsetEventDispatcher();
                $connection->rollback();
                $connection->setEventDispatcher($dispatcher);
                $connection->disconnect();
            }
        });
    }

/**
     * The database connections that should have transactions.
     *
     * @return array
     */
    protected function connectionsToTransact()
    {
        return property_exists($this, 'connectionsToTransact')
                            ? $this->connectionsToTransact : [null];
    }

/**
     * Determine if views should be dropped when refreshing the database.
     *
     * @return bool
     */
    protected function shouldDropViews()
    {
        return property_exists($this, 'dropViews') ? $this->dropViews : false;
    }

/**
     * Determine if types should be dropped when refreshing the database.
     *
     * @return bool
     */
    protected function shouldDropTypes()
    {
        return property_exists($this, 'dropTypes') ? $this->dropTypes : false;
    }

/**
     * Determine if the seed task should be run when refreshing the database.
     *
     * @return bool
     */
    protected function shouldSeed()
    {
        return property_exists($this, 'seed') ? $this->seed : false;
    }

/**
     * Determine the specific seeder class that should be used when refreshing the database.
     *
     * @return mixed
     */
    protected function seeder()
    {
        return property_exists($this, 'seeder') ? $this->seeder : false;
    }
}