diff --git a/spring-data-geode-test/src/main/java/org/springframework/data/gemfire/tests/mock/GemFireMockObjectsSupport.java b/spring-data-geode-test/src/main/java/org/springframework/data/gemfire/tests/mock/GemFireMockObjectsSupport.java
index ae89a14..dd2271c 100644
--- a/spring-data-geode-test/src/main/java/org/springframework/data/gemfire/tests/mock/GemFireMockObjectsSupport.java
+++ b/spring-data-geode-test/src/main/java/org/springframework/data/gemfire/tests/mock/GemFireMockObjectsSupport.java
@@ -2797,6 +2797,19 @@ public abstract class GemFireMockObjectsSupport extends MockObjectsSupport {
 			return invalidatedKeys.remove(key) ? null : value;
 		});
 
+		// Region.removeAll(:Collection<K>)
+		doAnswer(invocation -> {
+
+			Collection<K> keys = invocation.getArgument(0);
+
+			CollectionUtils.nullSafeCollection(keys).stream()
+				.filter(Objects::nonNull)
+				.forEach(mockRegion::remove);
+
+			return null;
+
+		}).when(mockRegion).removeAll(any(Collection.class));
+
 		// Region.size()
 		doAnswer(invocation -> data.size()).when(mockRegion).size();
 	}
diff --git a/spring-data-geode-test/src/test/java/org/springframework/data/gemfire/tests/MockRegionDataAccessOperationsAndEventsUnitTests.java b/spring-data-geode-test/src/test/java/org/springframework/data/gemfire/tests/MockRegionDataAccessOperationsAndEventsUnitTests.java
index e719ae3..b05d92c 100644
--- a/spring-data-geode-test/src/test/java/org/springframework/data/gemfire/tests/MockRegionDataAccessOperationsAndEventsUnitTests.java
+++ b/spring-data-geode-test/src/test/java/org/springframework/data/gemfire/tests/MockRegionDataAccessOperationsAndEventsUnitTests.java
@@ -25,6 +25,7 @@ import static org.mockito.Mockito.doReturn;
 import static org.mockito.Mockito.doThrow;
 import static org.mockito.Mockito.inOrder;
 import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.never;
 import static org.mockito.Mockito.times;
 import static org.mockito.Mockito.verify;
 import static org.mockito.Mockito.verifyNoInteractions;
@@ -570,7 +571,7 @@ public class MockRegionDataAccessOperationsAndEventsUnitTests {
 	}
 
 	@Test
-	public void regionGetAllForKeysIsCorrect() {
+	public void regionGetAllKeysIsCorrect() {
 
 		Map<Object, Object> expectedResults = MapBuilder.newMapBuilder()
 			.put(1, "ONE")
@@ -726,4 +727,24 @@ public class MockRegionDataAccessOperationsAndEventsUnitTests {
 		verify(this.mockRegion, times(1)).put(eq(1), eq("TEST"));
 		verify(this.mockRegion, times(1)).put(eq(2), eq("MOCK"));
 	}
+
+	@Test
+	public void regionRemoveAllKeysIsCorrect() {
+
+		this.mockRegion.put(1, "TEST");
+		this.mockRegion.put(2, "MOCK");
+		this.mockRegion.put(3, "NULL");
+
+		assertThat(this.mockRegion).hasSize(3);
+
+		this.mockRegion.removeAll(Arrays.asList(1, 2));
+
+		assertThat(this.mockRegion).hasSize(1);
+		assertThat(this.mockRegion).doesNotContainKeys(1, 2);
+		assertThat(this.mockRegion.get(3)).isEqualTo("NULL");
+
+		verify(this.mockRegion, times(1)).remove(eq(1));
+		verify(this.mockRegion, times(1)).remove(eq(2));
+		verify(this.mockRegion, never()).remove(eq(3));
+	}
 }
diff --git a/spring-data-geode-test/src/test/java/org/springframework/data/gemfire/tests/mock/GemFireMockObjectsSupportUnitTests.java b/spring-data-geode-test/src/test/java/org/springframework/data/gemfire/tests/mock/GemFireMockObjectsSupportUnitTests.java
index ed40dfb..0224f75 100644
--- a/spring-data-geode-test/src/test/java/org/springframework/data/gemfire/tests/mock/GemFireMockObjectsSupportUnitTests.java
+++ b/spring-data-geode-test/src/test/java/org/springframework/data/gemfire/tests/mock/GemFireMockObjectsSupportUnitTests.java
@@ -36,11 +36,20 @@ import org.apache.geode.cache.asyncqueue.AsyncEventQueueFactory;
 import org.apache.geode.cache.server.ClientSubscriptionConfig;
 
 /**
- * Unit tests for {@link GemFireMockObjectsSupport}.
+ * Unit Tests for {@link GemFireMockObjectsSupport}.
  *
  * @author John Blum
  * @see org.junit.Test
  * @see org.mockito.Mockito
+ * @see org.apache.geode.cache.AttributesMutator
+ * @see org.apache.geode.cache.Cache
+ * @see org.apache.geode.cache.Region
+ * @see org.apache.geode.cache.RegionAttributes
+ * @see org.apache.geode.cache.RegionService
+ * @see org.apache.geode.cache.asyncqueue.AsyncEventListener
+ * @see org.apache.geode.cache.asyncqueue.AsyncEventQueue
+ * @see org.apache.geode.cache.asyncqueue.AsyncEventQueueFactory
+ * @see org.apache.geode.cache.server.ClientSubscriptionConfig
  * @see org.springframework.data.gemfire.tests.mock.GemFireMockObjectsSupport
  * @since 1.0.0
  */