PHPUnit

I'm just writing this because my IDE crashed and I need to stash it.

Example test

<?php

namespace SMW\Tests\Exporter\Controller;

use MediaWiki\MediaWikiServices;
use PHPUnit\Framework\TestCase;


/**
 * @covers \SMW\Exporter\SMWExportController
 * @group semantic-mediawiki
 *
 * @license GPL-2.0-or-later
 * @since 5.0-alpha
 *
 * @author freephile
 */

class SMW_ExportControllerTest extends TestCase {

	public function testGetDBHandle() {
		$mwVersion = MW_VERSION;

		if (version_compare($mwVersion, '1.42', '>=')) {
			$connectionProvider = $this->createMock(\Wikimedia\Rdbms\ConnectionProvider::class);
			$replicaDatabase = $this->createMock(\Wikimedia\Rdbms\IDatabase::class);
			$connectionProvider->method('getReplicaDatabase')->willReturn($replicaDatabase);

			$mediaWikiServices = $this->createMock(MediaWikiServices::class);
			$mediaWikiServices->method('getConnectionProvider')->willReturn($connectionProvider);

			MediaWikiServices::setInstanceForTesting($mediaWikiServices);

			$this->assertSame($replicaDatabase, SMWExportController::getDBHandle());
		} else {
			$dbLoadBalancer = $this->createMock(\Wikimedia\Rdbms\LoadBalancer::class);
			$replicaDatabase = $this->createMock(\Wikimedia\Rdbms\IDatabase::class);
			$dbLoadBalancer->method('getConnection')->with(DB_REPLICA)->willReturn($replicaDatabase);

			$mediaWikiServices = $this->createMock(MediaWikiServices::class);
			$mediaWikiServices->method('getDBLoadBalancer')->willReturn($dbLoadBalancer);

			MediaWikiServices::setInstanceForTesting($mediaWikiServices);

			$this->assertSame($replicaDatabase, SMWExportController::getDBHandle());
		}
	}
}