filebackend: Refactor FileBackendIntegrationTest

FileBackendIntegrationTest was running tests against different backends
in an unconventional way, using a combination of wrapper test cases that
run tests against two different classes, and CLI options which don't
really exist anymore and have an associated fixme.

So:
* Move the bulk of FileBackendIntegrationTest to a new abstract base
  class under tests/phpunit/integration.
* Add subclasses for the FS and multiwrite test cases. This allows us to
  eliminate the wrappers.
* Add a subclass for MemoryFileBackend.
* Add a Swift subclass which replaces the main use case for
  the CLI option --use-filebackend. It is automatically enabled when
  a Swift backend is configured, similar to PostgreSQL tests.
* Some miscellaneous tests with a medium level of integration, not
  requiring backend setup and teardown, were moved to new classes
  FileBackendMultiWriteTest and FileBackendStoreTest.

Change-Id: I0da531349d7627970a7bcb34f3c1f5fd7e05cb21

1 files changed, 41 insertions, 0 deletions

diff --git a/tests/phpunit/integration/includes/libs/filebackend/SwiftFileBackendIntegrationTest.php b/tests/phpunit/integration/includes/libs/filebackend/SwiftFileBackendIntegrationTest.php
new file mode 100644
index 000000000000..e59bfdd33052
--- /dev/null
+++ b/tests/phpunit/integration/includes/libs/filebackend/SwiftFileBackendIntegrationTest.php
@@ -0,0 +1,41 @@
+<?php
+
+use MediaWiki\MainConfigNames;
+use MediaWiki\WikiMap\WikiMap;
+
+/**
+ * @group FileBackend
+ * @covers SwiftFileBackend
+ */
+class SwiftFileBackendIntegrationTest extends FileBackendIntegrationTestBase {
+	private static $backendToUse;
+
+	private function getBackendConfig(): ?array {
+		$backends = $this->getServiceContainer()->getMainConfig()->get( MainConfigNames::FileBackends );
+		foreach ( $backends as $conf ) {
+			if ( $conf['class'] === SwiftFileBackend::class ) {
+				return $conf;
+			}
+		}
+		return null;
+	}
+
+	protected function getBackend() {
+		if ( !self::$backendToUse ) {
+			$conf = $this->getBackendConfig();
+			if ( $conf === null ) {
+				$this->markTestSkipped( 'Configure a Swift file backend in $wgFileBackends to enable this test' );
+			}
+			$conf['name'] = 'localtesting'; // swap name
+			$conf['shardViaHashLevels'] = [ // test sharding
+				'unittest-cont1' => [ 'levels' => 1, 'base' => 16, 'repeat' => 1 ]
+			];
+			$lockManagerGroup = $this->getServiceContainer()
+				->getLockManagerGroupFactory()->getLockManagerGroup();
+			$conf['lockManager'] = $lockManagerGroup->get( $conf['lockManager'] );
+			$conf['domainId'] = WikiMap::getCurrentWikiId();
+			self::$backendToUse = new SwiftFileBackend( $conf );
+		}
+		return self::$backendToUse;
+	}
+}