From 875b49f53a6c3aeec4615c7992486bd6ad5adb42 Mon Sep 17 00:00:00 2001
From: Sri Harsha CH <sriharshach@google.com>
Date: Thu, 26 Dec 2024 12:48:02 +0000
Subject: [PATCH] chore(Spanner): fix mockspanner

---
 .../java/com/google/cloud/spanner/MockSpannerServiceImpl.java | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

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 7febf734119..c59ad34dc69 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
@@ -2014,7 +2014,9 @@ public void commit(CommitRequest request, StreamObserver<CommitResponse> respons
       return;
     }
     sessionLastUsed.put(session.getName(), Instant.now());
-    if (session.getMultiplexed() && !request.hasPrecommitToken()) {
+    if (session.getMultiplexed()
+        && !request.hasPrecommitToken()
+        && !request.hasSingleUseTransaction()) {
       throw Status.INVALID_ARGUMENT
           .withDescription(
               "A Commit request for a read-write transaction on a multiplexed session must specify a precommit token.")