urbanecm@notebook  ~/unsynced/gerrit/mediawiki/extensions/GrowthExperiments
$ git diff
diff --git a/tests/phpunit/integration/NewcomerTasks/ImageRecommendationFilterTest.php b/tests/phpunit/integration/NewcomerTasks/ImageRecommendationFilterTest.php
index 6ed4458a..215f94cd 100644
--- a/tests/phpunit/integration/NewcomerTasks/ImageRecommendationFilterTest.php
+++ b/tests/phpunit/integration/NewcomerTasks/ImageRecommendationFilterTest.php
@@ -36,7 +36,19 @@ class ImageRecommendationFilterTest extends MediaWikiIntegrationTestCase {
        public function testFilter() {
                $taskSet = $this->getDefaultTaskSet();

-               $wanObjectCache = MediaWikiServices::getInstance()->getMainWANObjectCache();
+               // We need a WAN cache for this.
+               global $wgWANObjectCaches;
+               $this->setMwGlobals( [
+                       'wgMainWANCache' => 'hash',
+                       'wgWANObjectCaches' => $wgWANObjectCaches + [
+                                       'hash' => [
+                                               'class'    => WANObjectCache::class,
+                                               'cacheId'  => 'hash',
+                                               'channels' => []
+                                       ]
+                               ]
+               ] );
+               $wanObjectCache = $this->getServiceContainer()->getMainWANObjectCache();
                $wanObjectCache->set(
                        ImageRecommendationFilter::makeKey( $wanObjectCache, 'image-recommendation', 'Task3' ),
                        true
urbanecm@notebook  ~/unsynced/gerrit/mediawiki/extensions/GrowthExperiments
$