diff --git a/google-cloud-spanner/src/test/java/com/google/cloud/spanner/MockSpannerServiceImpl.java b/google-cloud-spanner/src/test/java/com/google/cloud/spanner/MockSpannerServiceImpl.java
index 6a79454ee4..34cdc61a70 100644
--- a/google-cloud-spanner/src/test/java/com/google/cloud/spanner/MockSpannerServiceImpl.java
+++ b/google-cloud-spanner/src/test/java/com/google/cloud/spanner/MockSpannerServiceImpl.java
@@ -1224,6 +1224,7 @@ public void executeStreamingSql(
         || !request.getSql().equals(SessionPool.DETERMINE_DIALECT_STATEMENT.getSql())) {
       requests.add(request);
     }
+    System.out.println("executeStreamingSql");
     Preconditions.checkNotNull(request.getSession());
     Session session = getSession(request.getSession());
     if (session == null) {
@@ -1831,6 +1832,7 @@ private ByteString getTransactionId(Session session, TransactionSelector tx) {
         transactionId = null;
         break;
       case BEGIN:
+        System.out.println("getTransactionId");
         transactionId = beginTransaction(session, tx.getBegin(), null, null).getId();
         break;
       case ID: