XWIKI-9382: Provide test rule to initialize and manipulate olcore API

* fix test

xwiki-platform-core/xwiki-platform-extension/xwiki-platform-extension-handlers/xwiki-platform-extension-handler-xar/src/test/java/org/xwiki/extension/xar/internal/handler/internal/repository/XarInstalledExtensionRepositoryTest.java

@@ -28,8 +28,10 @@
 import org.xwiki.extension.repository.InstalledExtensionRepository;
 import org.xwiki.extension.test.MockitoRepositoryUtilsRule;
 import org.xwiki.extension.xar.internal.repository.XarInstalledExtensionRepository;
+import org.xwiki.test.annotation.AllComponents;
 import org.xwiki.test.mockito.MockitoComponentManagerRule;
 
+@AllComponents
 public class XarInstalledExtensionRepositoryTest
 {
     protected MockitoComponentManagerRule mocker = new MockitoComponentManagerRule();