AbstractIndexTests: Use ExtensionRegistry for ChangeIndexedCounter

Change-Id: I29290128a03d389993d8d747592b46cbbfe04e3f
diff --git a/javatests/com/google/gerrit/acceptance/ssh/AbstractIndexTests.java b/javatests/com/google/gerrit/acceptance/ssh/AbstractIndexTests.java
index a03d7f3..c841559 100644
--- a/javatests/com/google/gerrit/acceptance/ssh/AbstractIndexTests.java
+++ b/javatests/com/google/gerrit/acceptance/ssh/AbstractIndexTests.java
@@ -20,102 +20,91 @@
 import com.google.common.base.Joiner;
 import com.google.gerrit.acceptance.AbstractDaemonTest;
 import com.google.gerrit.acceptance.ChangeIndexedCounter;
+import com.google.gerrit.acceptance.ExtensionRegistry;
+import com.google.gerrit.acceptance.ExtensionRegistry.Registration;
 import com.google.gerrit.acceptance.GerritConfig;
 import com.google.gerrit.acceptance.NoHttpd;
 import com.google.gerrit.acceptance.PushOneCommit;
 import com.google.gerrit.acceptance.UseSsh;
 import com.google.gerrit.extensions.common.ChangeInfo;
-import com.google.gerrit.extensions.events.ChangeIndexedListener;
-import com.google.gerrit.extensions.registration.DynamicSet;
-import com.google.gerrit.extensions.registration.RegistrationHandle;
 import com.google.gerrit.server.query.change.ChangeData;
 import com.google.inject.Inject;
 import com.google.inject.Injector;
 import java.util.List;
-import org.junit.After;
-import org.junit.Before;
 import org.junit.Test;
 
 @NoHttpd
 @UseSsh
 public abstract class AbstractIndexTests extends AbstractDaemonTest {
-  @Inject private DynamicSet<ChangeIndexedListener> changeIndexedListeners;
-
-  private ChangeIndexedCounter changeIndexedCounter;
-  private RegistrationHandle changeIndexedCounterHandle;
+  @Inject private ExtensionRegistry extensionRegistry;
 
   /** @param injector injector */
   public void configureIndex(Injector injector) {}
 
-  @Before
-  public void addChangeIndexedCounter() {
-    changeIndexedCounter = new ChangeIndexedCounter();
-    changeIndexedCounterHandle = changeIndexedListeners.add("gerrit", changeIndexedCounter);
-  }
-
-  @After
-  public void removeChangeIndexedCounter() {
-    if (changeIndexedCounterHandle != null) {
-      changeIndexedCounterHandle.remove();
-    }
-  }
-
   @Test
   @GerritConfig(name = "index.autoReindexIfStale", value = "false")
   public void indexChange() throws Exception {
-    configureIndex(server.getTestInjector());
+    ChangeIndexedCounter changeIndexedCounter = new ChangeIndexedCounter();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(changeIndexedCounter)) {
+      configureIndex(server.getTestInjector());
 
-    PushOneCommit.Result change = createChange("first change", "test1.txt", "test1");
-    String changeId = change.getChangeId();
-    String changeLegacyId = change.getChange().getId().toString();
-    ChangeInfo changeInfo = gApi.changes().id(changeId).get();
+      PushOneCommit.Result change = createChange("first change", "test1.txt", "test1");
+      String changeId = change.getChangeId();
+      String changeLegacyId = change.getChange().getId().toString();
+      ChangeInfo changeInfo = gApi.changes().id(changeId).get();
 
-    disableChangeIndexWrites();
-    amendChange(changeId, "second test", "test2.txt", "test2");
+      disableChangeIndexWrites();
+      amendChange(changeId, "second test", "test2.txt", "test2");
 
-    assertChangeQuery("message:second", change.getChange(), false);
-    enableChangeIndexWrites();
+      assertChangeQuery("message:second", change.getChange(), false);
+      enableChangeIndexWrites();
 
-    changeIndexedCounter.clear();
-    String cmd = Joiner.on(" ").join("gerrit", "index", "changes", changeLegacyId);
-    adminSshSession.exec(cmd);
-    adminSshSession.assertSuccess();
+      changeIndexedCounter.clear();
+      String cmd = Joiner.on(" ").join("gerrit", "index", "changes", changeLegacyId);
+      adminSshSession.exec(cmd);
+      adminSshSession.assertSuccess();
 
-    changeIndexedCounter.assertReindexOf(changeInfo, 1);
+      changeIndexedCounter.assertReindexOf(changeInfo, 1);
 
-    assertChangeQuery("message:second", change.getChange(), true);
+      assertChangeQuery("message:second", change.getChange(), true);
+    }
   }
 
   @Test
   @GerritConfig(name = "index.autoReindexIfStale", value = "false")
   public void indexProject() throws Exception {
-    configureIndex(server.getTestInjector());
+    ChangeIndexedCounter changeIndexedCounter = new ChangeIndexedCounter();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(changeIndexedCounter)) {
+      configureIndex(server.getTestInjector());
 
-    PushOneCommit.Result change = createChange("first change", "test1.txt", "test1");
-    String changeId = change.getChangeId();
-    ChangeInfo changeInfo = gApi.changes().id(changeId).get();
+      PushOneCommit.Result change = createChange("first change", "test1.txt", "test1");
+      String changeId = change.getChangeId();
+      ChangeInfo changeInfo = gApi.changes().id(changeId).get();
 
-    disableChangeIndexWrites();
-    amendChange(changeId, "second test", "test2.txt", "test2");
+      disableChangeIndexWrites();
+      amendChange(changeId, "second test", "test2.txt", "test2");
 
-    assertChangeQuery("message:second", change.getChange(), false);
-    enableChangeIndexWrites();
+      assertChangeQuery("message:second", change.getChange(), false);
+      enableChangeIndexWrites();
 
-    changeIndexedCounter.clear();
-    String cmd = Joiner.on(" ").join("gerrit", "index", "changes-in-project", project.get());
-    adminSshSession.exec(cmd);
-    adminSshSession.assertSuccess();
-
-    boolean indexing = true;
-    while (indexing) {
-      String out = adminSshSession.exec("gerrit show-queue --wide");
+      changeIndexedCounter.clear();
+      String cmd = Joiner.on(" ").join("gerrit", "index", "changes-in-project", project.get());
+      adminSshSession.exec(cmd);
       adminSshSession.assertSuccess();
-      indexing = out.contains("Index all changes of project " + project.get());
+
+      boolean indexing = true;
+      while (indexing) {
+        String out = adminSshSession.exec("gerrit show-queue --wide");
+        adminSshSession.assertSuccess();
+        indexing = out.contains("Index all changes of project " + project.get());
+      }
+
+      changeIndexedCounter.assertReindexOf(changeInfo, 1);
+
+      assertChangeQuery("message:second", change.getChange(), true);
     }
-
-    changeIndexedCounter.assertReindexOf(changeInfo, 1);
-
-    assertChangeQuery("message:second", change.getChange(), true);
   }
 
   protected void assertChangeQuery(String q, ChangeData change, boolean assertTrue)