diff --git a/core/src/test/scala/org/apache/spark/SslExternalShuffleServiceSuite.scala b/core/src/test/scala/org/apache/spark/SslExternalShuffleServiceSuite.scala
index 3ce1f11a7acd1..119ad6b0530ac 100644
--- a/core/src/test/scala/org/apache/spark/SslExternalShuffleServiceSuite.scala
+++ b/core/src/test/scala/org/apache/spark/SslExternalShuffleServiceSuite.scala
@@ -22,6 +22,7 @@ import org.apache.spark.internal.config
 import org.apache.spark.network.TransportContext
 import org.apache.spark.network.netty.SparkTransportConf
 import org.apache.spark.network.shuffle.ExternalBlockHandler
+import org.apache.spark.util.SslTestUtils
 
 /**
  * This suite creates an external shuffle server and routes all shuffle fetches through it.
diff --git a/core/src/test/scala/org/apache/spark/SslShuffleNettySuite.scala b/core/src/test/scala/org/apache/spark/SslShuffleNettySuite.scala
index 7eaff7d37a814..ca4f0e8f7527f 100644
--- a/core/src/test/scala/org/apache/spark/SslShuffleNettySuite.scala
+++ b/core/src/test/scala/org/apache/spark/SslShuffleNettySuite.scala
@@ -17,6 +17,8 @@
 
 package org.apache.spark
 
+import org.apache.spark.util.SslTestUtils
+
 class SslShuffleNettySuite extends ShuffleNettySuite {
 
   override def beforeAll(): Unit = {
diff --git a/core/src/test/scala/org/apache/spark/executor/CoarseGrainedExecutorBackendSuite.scala b/core/src/test/scala/org/apache/spark/executor/CoarseGrainedExecutorBackendSuite.scala
index 45c27aea60228..abdbed07afcf8 100644
--- a/core/src/test/scala/org/apache/spark/executor/CoarseGrainedExecutorBackendSuite.scala
+++ b/core/src/test/scala/org/apache/spark/executor/CoarseGrainedExecutorBackendSuite.scala
@@ -45,7 +45,7 @@ import org.apache.spark.rpc.RpcEnv
 import org.apache.spark.scheduler.{SparkListener, SparkListenerExecutorAdded, SparkListenerExecutorRemoved, TaskDescription}
 import org.apache.spark.scheduler.cluster.CoarseGrainedClusterMessages.{KillTask, LaunchTask}
 import org.apache.spark.serializer.JavaSerializer
-import org.apache.spark.util.{SerializableBuffer, ThreadUtils, Utils}
+import org.apache.spark.util.{SerializableBuffer, SslTestUtils, ThreadUtils, Utils}
 
 class CoarseGrainedExecutorBackendSuite extends SparkFunSuite
     with LocalSparkContext with MockitoSugar {
diff --git a/core/src/test/scala/org/apache/spark/network/netty/NettyBlockTransferSecuritySuite.scala b/core/src/test/scala/org/apache/spark/network/netty/NettyBlockTransferSecuritySuite.scala
index 5c234ef955008..124c089b47108 100644
--- a/core/src/test/scala/org/apache/spark/network/netty/NettyBlockTransferSecuritySuite.scala
+++ b/core/src/test/scala/org/apache/spark/network/netty/NettyBlockTransferSecuritySuite.scala
@@ -32,7 +32,7 @@ import org.scalatest.matchers.must.Matchers
 import org.scalatest.matchers.should.Matchers._
 import org.scalatestplus.mockito.MockitoSugar
 
-import org.apache.spark.{SecurityManager, SparkConf, SparkFunSuite, SslTestUtils}
+import org.apache.spark.{SecurityManager, SparkConf, SparkFunSuite}
 import org.apache.spark.internal.config._
 import org.apache.spark.internal.config.Network
 import org.apache.spark.network.{BlockDataManager, BlockTransferService}
@@ -40,7 +40,7 @@ import org.apache.spark.network.buffer.{ManagedBuffer, NioManagedBuffer}
 import org.apache.spark.network.shuffle.BlockFetchingListener
 import org.apache.spark.serializer.{JavaSerializer, SerializerManager}
 import org.apache.spark.storage.{BlockId, ShuffleBlockId}
-import org.apache.spark.util.ThreadUtils
+import org.apache.spark.util.{SslTestUtils, ThreadUtils}
 
 class NettyBlockTransferSecuritySuite extends SparkFunSuite with MockitoSugar with Matchers {
 
diff --git a/core/src/test/scala/org/apache/spark/rpc/netty/NettyRpcEnvSuite.scala b/core/src/test/scala/org/apache/spark/rpc/netty/NettyRpcEnvSuite.scala
index dcd40b6afd56b..dce105d5e364b 100644
--- a/core/src/test/scala/org/apache/spark/rpc/netty/NettyRpcEnvSuite.scala
+++ b/core/src/test/scala/org/apache/spark/rpc/netty/NettyRpcEnvSuite.scala
@@ -27,7 +27,7 @@ import org.scalatestplus.mockito.MockitoSugar
 import org.apache.spark._
 import org.apache.spark.network.client.TransportClient
 import org.apache.spark.rpc._
-import org.apache.spark.util.ThreadUtils
+import org.apache.spark.util.{SslTestUtils, ThreadUtils}
 
 class NettyRpcEnvSuite extends RpcEnvSuite with MockitoSugar with TimeLimits {
 
diff --git a/core/src/test/scala/org/apache/spark/shuffle/ShuffleBlockPusherSuite.scala b/core/src/test/scala/org/apache/spark/shuffle/ShuffleBlockPusherSuite.scala
index 99f113ec16ace..340c93518f58f 100644
--- a/core/src/test/scala/org/apache/spark/shuffle/ShuffleBlockPusherSuite.scala
+++ b/core/src/test/scala/org/apache/spark/shuffle/ShuffleBlockPusherSuite.scala
@@ -41,7 +41,7 @@ import org.apache.spark.network.util.TransportConf
 import org.apache.spark.serializer.JavaSerializer
 import org.apache.spark.shuffle.ShuffleBlockPusher.PushRequest
 import org.apache.spark.storage._
-import org.apache.spark.util.ThreadUtils
+import org.apache.spark.util.{SslTestUtils, ThreadUtils}
 
 class ShuffleBlockPusherSuite extends SparkFunSuite {
 
diff --git a/core/src/test/scala/org/apache/spark/shuffle/sort/IndexShuffleBlockResolverSuite.scala b/core/src/test/scala/org/apache/spark/shuffle/sort/IndexShuffleBlockResolverSuite.scala
index a9ca9135f38a9..d374b54c8cb93 100644
--- a/core/src/test/scala/org/apache/spark/shuffle/sort/IndexShuffleBlockResolverSuite.scala
+++ b/core/src/test/scala/org/apache/spark/shuffle/sort/IndexShuffleBlockResolverSuite.scala
@@ -26,11 +26,11 @@ import org.mockito.Mockito._
 import org.mockito.invocation.InvocationOnMock
 import org.roaringbitmap.RoaringBitmap
 
-import org.apache.spark.{SparkConf, SparkFunSuite, SslTestUtils}
+import org.apache.spark.{SparkConf, SparkFunSuite}
 import org.apache.spark.internal.config
 import org.apache.spark.shuffle.{IndexShuffleBlockResolver, ShuffleBlockInfo}
 import org.apache.spark.storage._
-import org.apache.spark.util.Utils
+import org.apache.spark.util.{SslTestUtils, Utils}
 
 class IndexShuffleBlockResolverSuite extends SparkFunSuite {
 
diff --git a/core/src/test/scala/org/apache/spark/storage/SslBlockManagerReplicationSuite.scala b/core/src/test/scala/org/apache/spark/storage/SslBlockManagerReplicationSuite.scala
index 760f31de0597e..0cdfb3665a938 100644
--- a/core/src/test/scala/org/apache/spark/storage/SslBlockManagerReplicationSuite.scala
+++ b/core/src/test/scala/org/apache/spark/storage/SslBlockManagerReplicationSuite.scala
@@ -17,7 +17,8 @@
 
 package org.apache.spark.storage
 
-import org.apache.spark.{SparkConf, SslTestUtils}
+import org.apache.spark.SparkConf
+import org.apache.spark.util.SslTestUtils
 
 class SslBlockManagerReplicationSuite extends BlockManagerReplicationSuite {
   override def createConf(): SparkConf = {
diff --git a/core/src/test/scala/org/apache/spark/util/SslTestUtils.scala b/core/src/test/scala/org/apache/spark/util/SslTestUtils.scala
index dd71a68f6250b..152f6ec149f45 100644
--- a/core/src/test/scala/org/apache/spark/util/SslTestUtils.scala
+++ b/core/src/test/scala/org/apache/spark/util/SslTestUtils.scala
@@ -15,8 +15,9 @@
  * limitations under the License.
  */
 
-package org.apache.spark
+package org.apache.spark.util
 
+import org.apache.spark.SparkConf
 import org.apache.spark.network.ssl.SslSampleConfigs
 
 object SslTestUtils {