+ public function testForceGlobalInstance() {
+ $newServices = $this->newMediaWikiServices();
+ $oldServices = MediaWikiServices::forceGlobalInstance( $newServices );
+
+ $this->assertInstanceOf( 'MediaWiki\\MediaWikiServices', $oldServices );
+ $this->assertNotSame( $oldServices, $newServices );
+
+ $theServices = MediaWikiServices::getInstance();
+ $this->assertSame( $theServices, $newServices );
+
+ MediaWikiServices::forceGlobalInstance( $oldServices );
+
+ $theServices = MediaWikiServices::getInstance();
+ $this->assertSame( $theServices, $oldServices );
+ }
+
+ public function testResetGlobalInstance() {
+ $newServices = $this->newMediaWikiServices();
+ $oldServices = MediaWikiServices::forceGlobalInstance( $newServices );
+
+ MediaWikiServices::resetGlobalInstance( $this->newTestConfig() );
+ $theServices = MediaWikiServices::getInstance();
+
+ $this->assertNotSame( $theServices, $newServices );
+ $this->assertNotSame( $theServices, $oldServices );
+
+ MediaWikiServices::forceGlobalInstance( $oldServices );
+ }
+
+ public function testDisableStorageBackend() {
+ $newServices = $this->newMediaWikiServices();
+ $oldServices = MediaWikiServices::forceGlobalInstance( $newServices );
+
+ $lbFactory = $this->getMockBuilder( 'LBFactorySimple' )
+ ->disableOriginalConstructor()
+ ->getMock();
+
+ $lbFactory->expects( $this->once() )
+ ->method( 'destroy' );
+
+ $newServices->redefineService(
+ 'DBLoadBalancerFactory',
+ function() use ( $lbFactory ) {
+ return $lbFactory;
+ }
+ );
+
+ // force the service to become active, so we can check that it does get destroyed
+ $newServices->getService( 'DBLoadBalancerFactory' );
+
+ MediaWikiServices::disableStorageBackend(); // should destroy DBLoadBalancerFactory
+
+ try {
+ MediaWikiServices::getInstance()->getService( 'DBLoadBalancerFactory' );
+ $this->fail( 'DBLoadBalancerFactory shoudl have been disabled' );
+ }
+ catch ( ServiceDisabledException $ex ) {
+ // ok, as expected
+ }
+ catch ( Throwable $ex ) {
+ $this->fail( 'ServiceDisabledException expected, caught ' . get_class( $ex ) );
+ }
+
+ MediaWikiServices::forceGlobalInstance( $oldServices );
+ }
+
+ public function testResetChildProcessServices() {
+ $newServices = $this->newMediaWikiServices();
+ $oldServices = MediaWikiServices::forceGlobalInstance( $newServices );
+
+ $lbFactory = $this->getMockBuilder( 'LBFactorySimple' )
+ ->disableOriginalConstructor()
+ ->getMock();
+
+ $lbFactory->expects( $this->once() )
+ ->method( 'destroy' );
+
+ $newServices->redefineService(
+ 'DBLoadBalancerFactory',
+ function() use ( $lbFactory ) {
+ return $lbFactory;
+ }
+ );
+
+ // force the service to become active, so we can check that it does get destroyed
+ $oldLBFactory = $newServices->getService( 'DBLoadBalancerFactory' );
+
+ MediaWikiServices::resetChildProcessServices();
+ $finalServices = MediaWikiServices::getInstance();
+
+ $newLBFactory = $finalServices->getService( 'DBLoadBalancerFactory' );
+
+ $this->assertNotSame( $oldLBFactory, $newLBFactory );
+
+ MediaWikiServices::forceGlobalInstance( $oldServices );
+ }
+
+ public function testResetServiceForTesting() {
+ $services = $this->newMediaWikiServices();
+ $serviceCounter = 0;
+
+ $services->defineService(
+ 'Test',
+ function() use ( &$serviceCounter ) {
+ $serviceCounter++;
+ $service = $this->getMock( 'MediaWiki\Services\DestructibleService' );
+ $service->expects( $this->once() )->method( 'destroy' );
+ return $service;
+ }
+ );
+
+ // This should do nothing. In particular, it should not create a service instance.
+ $services->resetServiceForTesting( 'Test' );
+ $this->assertEquals( 0, $serviceCounter, 'No service instance should be created yet.' );
+
+ $oldInstance = $services->getService( 'Test' );
+ $this->assertEquals( 1, $serviceCounter, 'A service instance should exit now.' );
+
+ // The old instance should be detached, and destroy() called.
+ $services->resetServiceForTesting( 'Test' );
+ $newInstance = $services->getService( 'Test' );
+
+ $this->assertNotSame( $oldInstance, $newInstance );
+
+ // Satisfy the expectation that destroy() is called also for the second service instance.
+ $newInstance->destroy();
+ }
+
+ public function testResetServiceForTesting_noDestroy() {
+ $services = $this->newMediaWikiServices();
+
+ $services->defineService(
+ 'Test',
+ function() {
+ $service = $this->getMock( 'MediaWiki\Services\DestructibleService' );
+ $service->expects( $this->never() )->method( 'destroy' );
+ return $service;
+ }
+ );
+
+ $oldInstance = $services->getService( 'Test' );
+
+ // The old instance should be detached, but destroy() not called.
+ $services->resetServiceForTesting( 'Test', false );
+ $newInstance = $services->getService( 'Test' );
+
+ $this->assertNotSame( $oldInstance, $newInstance );
+ }
+