Stop broadcasting accounts cache eviction

The solution is based on multi-site plugin fix: I9cd1c95693c which is
the sibling of high-availability plugin. To adapt
CacheEvictionHandlerTest access modifier for Configuration was set to
public with @VisibleForTesting annotation.

Bug: Issue 13811
Change-Id: Iaf3f9c0b9440d234a83f9ed7d976ca7368c31aaa
diff --git a/src/main/java/com/ericsson/gerrit/plugins/highavailability/Configuration.java b/src/main/java/com/ericsson/gerrit/plugins/highavailability/Configuration.java
index 3bd58a3..2ec7345 100644
--- a/src/main/java/com/ericsson/gerrit/plugins/highavailability/Configuration.java
+++ b/src/main/java/com/ericsson/gerrit/plugins/highavailability/Configuration.java
@@ -17,6 +17,7 @@
 import static java.util.concurrent.TimeUnit.HOURS;
 import static java.util.concurrent.TimeUnit.MILLISECONDS;
 
+import com.google.common.annotations.VisibleForTesting;
 import com.google.common.base.CharMatcher;
 import com.google.common.base.Strings;
 import com.google.common.collect.ImmutableList;
@@ -76,8 +77,9 @@
     STATIC
   }
 
+  @VisibleForTesting
   @Inject
-  Configuration(
+  public Configuration(
       PluginConfigFactory pluginConfigFactory, @PluginName String pluginName, SitePaths site) {
     Config cfg = pluginConfigFactory.getGlobalPluginConfig(pluginName);
     main = new Main(site, cfg);
diff --git a/src/main/java/com/ericsson/gerrit/plugins/highavailability/cache/CachePatternMatcher.java b/src/main/java/com/ericsson/gerrit/plugins/highavailability/cache/CachePatternMatcher.java
index 0f43eaf..baf512f 100644
--- a/src/main/java/com/ericsson/gerrit/plugins/highavailability/cache/CachePatternMatcher.java
+++ b/src/main/java/com/ericsson/gerrit/plugins/highavailability/cache/CachePatternMatcher.java
@@ -26,7 +26,7 @@
 @Singleton
 class CachePatternMatcher {
   private static final List<String> DEFAULT_PATTERNS =
-      ImmutableList.of("accounts", "^groups.*", "ldap_usernames", "projects", "sshkeys");
+      ImmutableList.of("^groups.*", "ldap_usernames", "projects", "sshkeys");
 
   private final Pattern pattern;
 
diff --git a/src/test/java/com/ericsson/gerrit/plugins/highavailability/cache/CacheEvictionHandlerTest.java b/src/test/java/com/ericsson/gerrit/plugins/highavailability/cache/CacheEvictionHandlerTest.java
new file mode 100644
index 0000000..7077319
--- /dev/null
+++ b/src/test/java/com/ericsson/gerrit/plugins/highavailability/cache/CacheEvictionHandlerTest.java
@@ -0,0 +1,63 @@
+// Copyright (C) 2020 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.ericsson.gerrit.plugins.highavailability.cache;
+
+import static org.mockito.Mockito.verifyZeroInteractions;
+import static org.mockito.Mockito.when;
+
+import com.ericsson.gerrit.plugins.highavailability.Configuration;
+import com.ericsson.gerrit.plugins.highavailability.forwarder.Forwarder;
+import com.google.common.cache.RemovalCause;
+import com.google.common.cache.RemovalNotification;
+import com.google.gerrit.server.config.PluginConfigFactory;
+import com.google.gerrit.server.config.SitePaths;
+import java.io.IOException;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.util.concurrent.Executor;
+import org.eclipse.jgit.lib.Config;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.junit.MockitoJUnitRunner;
+
+@RunWith(MockitoJUnitRunner.class)
+public class CacheEvictionHandlerTest {
+  @Mock private Executor executorMock;
+  @Mock private Forwarder forwarder;
+  @Mock private PluginConfigFactory pluginConfigFactoryMock;
+
+  private static final String PLUGIN_NAME = "high-availability";
+  private static final Path SITE_PATH = Paths.get("/site_path");
+  private CachePatternMatcher defaultCacheMatcher;
+
+  @Before
+  public void setUp() throws IOException {
+    when(pluginConfigFactoryMock.getGlobalPluginConfig(PLUGIN_NAME)).thenReturn(new Config());
+    defaultCacheMatcher =
+        new CachePatternMatcher(
+            new Configuration(pluginConfigFactoryMock, PLUGIN_NAME, new SitePaths(SITE_PATH)));
+  }
+
+  @Test
+  public void shouldNotPublishAccountsCacheEvictions() {
+    CacheEvictionHandler<String, String> handler =
+        new CacheEvictionHandler<>(forwarder, executorMock, PLUGIN_NAME, defaultCacheMatcher);
+    handler.onRemoval(
+        "test", "accounts", RemovalNotification.create("test", "accounts", RemovalCause.EXPLICIT));
+    verifyZeroInteractions(executorMock);
+  }
+}
diff --git a/src/test/java/com/ericsson/gerrit/plugins/highavailability/cache/CachePatternMatcherTest.java b/src/test/java/com/ericsson/gerrit/plugins/highavailability/cache/CachePatternMatcherTest.java
index 9b6e66b..caf50b9 100644
--- a/src/test/java/com/ericsson/gerrit/plugins/highavailability/cache/CachePatternMatcherTest.java
+++ b/src/test/java/com/ericsson/gerrit/plugins/highavailability/cache/CachePatternMatcherTest.java
@@ -38,7 +38,6 @@
     CachePatternMatcher matcher = new CachePatternMatcher(configurationMock);
     for (String cache :
         ImmutableList.of(
-            "accounts",
             "groups",
             "groups_byinclude",
             "groups_byname",
@@ -55,6 +54,7 @@
     }
     for (String cache :
         ImmutableList.of(
+            "accounts",
             "adv_bases",
             "change_kind",
             "change_notes",