Fix tests broken with the upgrade of Mockito framework

With the change 390986, Mockito framework was upgraded from 3.3.3
to 5.6.0 and because of that some tests started failing. This
change requires minor refactoring to fix those tests, as outlined
in the following points:

- The method `verifyZeroInteractions` is no longer supported in the
class `org.mockito.Mockito` [1]. Instead, it can be substituted with
`verifyNoInteractions`.

- In Mockito version 3.3.3, the execution of real code occurred in
methods without defined expectations, and some tests were designed
accordingly. However, with Mockito 5.6.0, when methods are invoked
without specified expectations, the framework will now appropriately
return either null, a primitive/primitive wrapper value, or an empty
collection. As a result, minor refactoring was necessary.

- The handling of Mockito expectations in methods declared with
varargs has been restructured to use the format `any(MyClass[].class)`.

References:

[1] https://github.com/mockito/mockito/blob/v5.6.0/src/main/java/org/mockito/Mockito.java#L2699

Change-Id: Ic3d8641c4ca6b485212bdaa55d359a4cc4bb4741

src/test/java/com/googlesource/gerrit/plugins/replication/pull/ReplicationQueueTest.java

diff --git a/src/test/java/com/googlesource/gerrit/plugins/replication/pull/ReplicationQueueTest.java b/src/test/java/com/googlesource/gerrit/plugins/replication/pull/ReplicationQueueTest.java
index 14447a9..90c9b9c 100644
--- a/src/test/java/com/googlesource/gerrit/plugins/replication/pull/ReplicationQueueTest.java
+++ b/src/test/java/com/googlesource/gerrit/plugins/replication/pull/ReplicationQueueTest.java
@@ -26,7 +26,7 @@
 import static org.mockito.Mockito.never;
 import static org.mockito.Mockito.times;
 import static org.mockito.Mockito.verify;
-import static org.mockito.Mockito.verifyZeroInteractions;
+import static org.mockito.Mockito.verifyNoInteractions;
 import static org.mockito.Mockito.when;
 
 import com.google.common.base.Suppliers;
@@ -527,7 +527,7 @@
     Event event = generateBatchRefUpdateEvent("refs/multi-site/version");
     objectUnderTest.onEvent(event);
 
-    verifyZeroInteractions(wq, rd, dis, sl, fetchClientFactory, accountAttribute);
+    verifyNoInteractions(wq, rd, dis, sl, fetchClientFactory, accountAttribute);
   }
 
   @Test
@@ -541,7 +541,7 @@
     Event event = generateBatchRefUpdateEvent("refs/starred-changes/41/2941/1000000");
     objectUnderTest.onEvent(event);
 
-    verifyZeroInteractions(wq, rd, dis, sl, fetchClientFactory, accountAttribute);
+    verifyNoInteractions(wq, rd, dis, sl, fetchClientFactory, accountAttribute);
   }
 
   @Test

src/test/java/com/googlesource/gerrit/plugins/replication/pull/api/DeleteRefCommandTest.java

diff --git a/src/test/java/com/googlesource/gerrit/plugins/replication/pull/api/DeleteRefCommandTest.java b/src/test/java/com/googlesource/gerrit/plugins/replication/pull/api/DeleteRefCommandTest.java
index 9c9c689..40912ac 100644
--- a/src/test/java/com/googlesource/gerrit/plugins/replication/pull/api/DeleteRefCommandTest.java
+++ b/src/test/java/com/googlesource/gerrit/plugins/replication/pull/api/DeleteRefCommandTest.java
@@ -41,7 +41,6 @@
 import com.googlesource.gerrit.plugins.replication.pull.fetch.ApplyObject;
 import java.util.Optional;
 import org.eclipse.jgit.lib.Ref;
-import org.eclipse.jgit.lib.RefDatabase;
 import org.eclipse.jgit.lib.RefUpdate;
 import org.eclipse.jgit.lib.RefUpdate.Result;
 import org.eclipse.jgit.lib.Repository;
@@ -78,7 +77,6 @@
   @Mock private RefUpdate refUpdate;
   @Mock private Repository repository;
   @Mock private Ref currentRef;
-  @Mock private RefDatabase refDb;
   @Captor ArgumentCaptor<Event> eventCaptor;
 
   private DeleteRefCommand objectUnderTest;
@@ -92,8 +90,7 @@
     when(source.getURI(TEST_PROJECT_NAME)).thenReturn(TEST_REMOTE_URI);
     when(gitManager.openRepository(any())).thenReturn(repository);
     when(repository.updateRef(any())).thenReturn(refUpdate);
-    when(repository.getRefDatabase()).thenReturn(refDb);
-    when(refDb.exactRef(anyString())).thenReturn(currentRef);
+    when(repository.exactRef(anyString())).thenReturn(currentRef);
     when(refUpdate.delete()).thenReturn(Result.FORCED);
 
     objectUnderTest =
@@ -131,8 +128,7 @@
   @Test
   public void shouldHandleNonExistingRef() throws Exception {
     when(source.isMirror()).thenReturn(true);
-    when(refDb.exactRef(anyString())).thenReturn(null);
-
+    when(repository.exactRef(anyString())).thenReturn(null);
     objectUnderTest.deleteRef(TEST_PROJECT_NAME, NON_EXISTING_REF_NAME, TEST_SOURCE_LABEL);
 
     verify(eventDispatcher, never()).postEvent(any());

src/test/java/com/googlesource/gerrit/plugins/replication/pull/client/FetchRestApiClientWithBasicAuthenticationTest.java

diff --git a/src/test/java/com/googlesource/gerrit/plugins/replication/pull/client/FetchRestApiClientWithBasicAuthenticationTest.java b/src/test/java/com/googlesource/gerrit/plugins/replication/pull/client/FetchRestApiClientWithBasicAuthenticationTest.java
index ebac729..165ed80 100644
--- a/src/test/java/com/googlesource/gerrit/plugins/replication/pull/client/FetchRestApiClientWithBasicAuthenticationTest.java
+++ b/src/test/java/com/googlesource/gerrit/plugins/replication/pull/client/FetchRestApiClientWithBasicAuthenticationTest.java
@@ -39,7 +39,7 @@
   @Before
   public void setup() throws Exception {
     when(bearerTokenProvider.get()).thenReturn(Optional.empty());
-    when(credentialProvider.supports(any()))
+    when(credentialProvider.supports(any(CredentialItem[].class)))
         .thenAnswer(
             new Answer<Boolean>() {
 
@@ -54,7 +54,7 @@
               }
             });
 
-    when(credentialProvider.get(any(), any(CredentialItem.class))).thenReturn(true);
+    when(credentialProvider.get(any(), any(CredentialItem[].class))).thenReturn(true);
     when(credentials.create(anyString())).thenReturn(credentialProvider);
     when(replicationConfig.getConfig()).thenReturn(config);
     when(config.getStringList("replication", null, "syncRefs")).thenReturn(new String[0]);