--- /dev/null
+<?php
+
+use Wikimedia\TestingAccessWrapper;
+
+class CdnCacheUpdateTest extends MediaWikiTestCase {
+ public function testPurgeMergeWeb() {
+ $this->setMwGlobals( 'wgCommandLineMode', false );
+
+ $urls1 = [];
+ $title = Title::newMainPage();
+ $urls1[] = $title->getCanonicalURL( '?x=1' );
+ $urls1[] = $title->getCanonicalURL( '?x=2' );
+ $urls1[] = $title->getCanonicalURL( '?x=3' );
+ $update1 = new CdnCacheUpdate( $urls1 );
+ DeferredUpdates::addUpdate( $update1 );
+
+ $urls2 = [];
+ $urls2[] = $title->getCanonicalURL( '?x=2' );
+ $urls2[] = $title->getCanonicalURL( '?x=3' );
+ $urls2[] = $title->getCanonicalURL( '?x=4' );
+ $update2 = new CdnCacheUpdate( $urls2 );
+ DeferredUpdates::addUpdate( $update2 );
+
+ $wrapper = TestingAccessWrapper::newFromObject( $update1 );
+ $this->assertEquals( array_merge( $urls1, $urls2 ), $wrapper->urls );
+ }
+}