setOriginalConnection example

/** * @internal */
#[Package('core')] class MigrationExecuteQueryTest extends TestCase
{
    use IntegrationTestBehaviour;

    public function testExecuteQueryDoesNotPerformWriteOperations(): void
    {
        $nullConnection = new NullConnection();
        $nullConnection->setOriginalConnection($this->getContainer()->get(Connection::class));

        $migrationCollection = $this->getContainer()->get(MigrationCollectionLoader::class)->collectAll();

        try {
            foreach ($migrationCollection as $migrations) {
                /** @var class-string<MigrationStep> $migrationClass */
                foreach ($migrations->getMigrationSteps() as $migrationClass) {
                    $migration = new $migrationClass();
                    $migration->update($nullConnection);
                    $migration->updateDestructive($nullConnection);
                }
            }