SONAR-15919 Improving code quality

server/sonar-process/src/test/java/org/sonar/process/cluster/hz/HazelcastMemberImplTest.java

@@ -21,6 +21,8 @@ package org.sonar.process.cluster.hz;
 
 import com.hazelcast.cluster.Member;
 import com.hazelcast.cluster.memberselector.MemberSelectors;
+import com.hazelcast.core.HazelcastInstance;
+import com.hazelcast.topic.ITopic;
 import java.net.InetAddress;
 import java.util.Arrays;
 import java.util.List;
@@ -34,10 +36,17 @@ import org.junit.Test;
 import org.junit.rules.DisableOnDebug;
 import org.junit.rules.TestRule;
 import org.junit.rules.Timeout;
+import org.mockito.verification.VerificationMode;
+import org.sonar.core.util.RuleActivationListener;
 import org.sonar.process.NetworkUtilsImpl;
 import org.sonar.process.ProcessId;
 
 import static org.assertj.core.api.Assertions.assertThat;
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.times;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
 
 public class HazelcastMemberImplTest {
 
@@ -106,6 +115,19 @@ public class HazelcastMemberImplTest {
     assertThat(failures.get(0)).hasMessageContaining("BOOM");
   }
 
+  @Test
+  public void subscribeRuleActivationTopic_listenerAdded() {
+    RuleActivationListener listener = mock(RuleActivationListener.class);
+    HazelcastInstance hzInstance = mock(HazelcastInstance.class);
+    ITopic<Object> topic = mock(ITopic.class);
+    when(hzInstance.getTopic(any())).thenReturn(topic);
+    HazelcastMemberImpl underTest = new HazelcastMemberImpl(hzInstance);
+
+    underTest.subscribeRuleActivationTopic(listener);
+
+    verify(topic, times(1)).addMessageListener(any());
+  }
+
   private static HazelcastMember newHzMember(int port, int... otherPorts) {
     return new HazelcastMemberBuilder(JoinConfigurationType.TCP_IP)
       .setProcessId(ProcessId.COMPUTE_ENGINE)