DATACASS-581 - Fix test conditions in DefaultBridgedReactiveSessionUnitTests.

Report completed future to adapt to Guava's future state checking in newer library versions.

Author: mp911de

spring-data-cassandra/src/test/java/org/springframework/data/cassandra/core/cql/DefaultBridgedReactiveSessionUnitTests.java

@@ -52,7 +52,7 @@
  *
  * @author Mark Paluch
  */
-@RunWith(MockitoJUnitRunner.class)
+@RunWith(MockitoJUnitRunner.Silent.class)
 public class DefaultBridgedReactiveSessionUnitTests {
 
 @Mock Session sessionMock;
@@ -77,6 +77,8 @@ public void before() {
 
 return null;
 }).when(future).addListener(any(), any());
+
+when(future.isDone()).thenReturn(true);
 }
 
 @Test // DATACASS-335
@@ -248,6 +250,7 @@ public void shouldFetchDependingOnCompletion() throws Exception {
 return null;
 }).when(future).addListener(any(), any());
 
+when(future.isDone()).thenReturn(true);
 when(future.get()).thenReturn(resultSet);
 when(resultSet.isFullyFetched()).thenReturn(false, false, true);
 when(resultSet.fetchMoreResults()).thenReturn(future);