Add a way to disable the account index from tests

Change-Id: I556051539085e949ddbc8084210928992a667562

java/com/google/gerrit/acceptance/AbstractDaemonTest.java

@@ -101,6 +101,8 @@ import com.google.gerrit.server.git.meta.MetaDataUpdate;
 import com.google.gerrit.server.group.InternalGroup;
 import com.google.gerrit.server.group.SystemGroupBackend;
 import com.google.gerrit.server.group.db.Groups;
+import com.google.gerrit.server.index.account.AccountIndex;
+import com.google.gerrit.server.index.account.AccountIndexCollection;
 import com.google.gerrit.server.index.account.AccountIndexer;
 import com.google.gerrit.server.index.change.ChangeIndex;
 import com.google.gerrit.server.index.change.ChangeIndexCollection;
@@ -271,6 +273,7 @@ public abstract class AbstractDaemonTest {
   protected BlockStrategy noSleepBlockStrategy = t -> {}; // Don't sleep in tests.
 
   @Inject private ChangeIndexCollection changeIndexes;
+  @Inject private AccountIndexCollection accountIndexes;
   @Inject private EventRecorder.Factory eventRecorderFactory;
   @Inject private InProcessProtocol inProcessProtocol;
   @Inject private Provider<AnonymousUser> anonymousUser;
@@ -878,6 +881,23 @@ public abstract class AbstractDaemonTest {
     };
   }
 
+  protected AutoCloseable disableAccountIndex() {
+    AccountIndex searchIndex = accountIndexes.getSearchIndex();
+    if (!(searchIndex instanceof DisabledAccountIndex)) {
+      accountIndexes.setSearchIndex(new DisabledAccountIndex(searchIndex), false);
+    }
+
+    return new AutoCloseable() {
+      @Override
+      public void close() {
+        AccountIndex searchIndex = accountIndexes.getSearchIndex();
+        if (searchIndex instanceof DisabledAccountIndex) {
+          accountIndexes.setSearchIndex(((DisabledAccountIndex) searchIndex).unwrap(), false);
+        }
+      }
+    };
+  }
+
   protected static Gson newGson() {
     return OutputFormat.JSON_COMPACT.newGson();
   }

java/com/google/gerrit/acceptance/DisabledAccountIndex.java

@@ -0,0 +1,71 @@
+// Copyright (C) 2018 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package com.google.gerrit.acceptance;
+
+import com.google.gerrit.index.QueryOptions;
+import com.google.gerrit.index.Schema;
+import com.google.gerrit.index.query.DataSource;
+import com.google.gerrit.index.query.Predicate;
+import com.google.gerrit.reviewdb.client.Account;
+import com.google.gerrit.server.account.AccountState;
+import com.google.gerrit.server.index.account.AccountIndex;
+
+/** This class wraps an index and assumes the search index can't handle any queries. */
+public class DisabledAccountIndex implements AccountIndex {
+  private final AccountIndex index;
+
+  public DisabledAccountIndex(AccountIndex index) {
+    this.index = index;
+  }
+
+  public AccountIndex unwrap() {
+    return index;
+  }
+
+  @Override
+  public Schema<AccountState> getSchema() {
+    return index.getSchema();
+  }
+
+  @Override
+  public void close() {
+    index.close();
+  }
+
+  @Override
+  public void replace(AccountState obj) {
+    throw new UnsupportedOperationException("AccountIndex is disabled");
+  }
+
+  @Override
+  public void delete(Account.Id key) {
+    throw new UnsupportedOperationException("AccountIndex is disabled");
+  }
+
+  @Override
+  public void deleteAll() {
+    throw new UnsupportedOperationException("AccountIndex is disabled");
+  }
+
+  @Override
+  public DataSource<AccountState> getSource(Predicate<AccountState> p, QueryOptions opts) {
+    throw new UnsupportedOperationException("AccountIndex is disabled");
+  }
+
+  @Override
+  public void markReady(boolean ready) {
+    throw new UnsupportedOperationException("AccountIndex is disabled");
+  }
+}