test: disable mtls checks during tests (googleapis#4052)

* test: disable mtls checks during tests

Disable MTLS checks during tests, as the check is otherwise executed for
every stub creation. This slows down running the tests locally to the
point that they are unusable.

This workaround should be removed once googleapis/sdk-platform-java#3911
has been fixed.

* chore: generate libraries at Sat Sep 20 05:24:30 UTC 2025

---------

Co-authored-by: cloud-java-bot <cloud-java-bot@google.com>

Author: olavloite

google-cloud-spanner/pom.xml

@@ -369,6 +369,20 @@
       <scope>test</scope>
     </dependency>
 
+    <!-- Used to work around https://github.com/googleapis/sdk-platform-java/issues/3911 -->
+    <dependency>
+      <groupId>net.bytebuddy</groupId>
+      <artifactId>byte-buddy</artifactId>
+      <version>1.17.7</version>
+      <scope>test</scope>
+    </dependency>
+    <dependency>
+      <groupId>net.bytebuddy</groupId>
+      <artifactId>byte-buddy-agent</artifactId>
+      <version>1.17.7</version>
+      <scope>test</scope>
+    </dependency>
+
     <!-- Executor tests - The 'provided' scope is overwritten to compile time scope for the profile 'executor-tests' -->
     <dependency>
       <groupId>com.google.api.grpc</groupId>

google-cloud-spanner/src/test/java/com/google/cloud/spanner/AbstractAsyncTransactionTest.java

@@ -16,6 +16,7 @@
 
 package com.google.cloud.spanner;
 
+import static com.google.cloud.spanner.DisableDefaultMtlsProvider.disableDefaultMtlsProvider;
 import static com.google.cloud.spanner.MockSpannerTestUtil.EMPTY_KEY_VALUE_RESULTSET;
 import static com.google.cloud.spanner.MockSpannerTestUtil.INVALID_UPDATE_STATEMENT;
 import static com.google.cloud.spanner.MockSpannerTestUtil.READ_MULTIPLE_KEY_VALUE_RESULTSET;
@@ -56,6 +57,7 @@ public abstract class AbstractAsyncTransactionTest {
 
   @BeforeClass
   public static void setup() throws Exception {
+    disableDefaultMtlsProvider();
     mockSpanner = new MockSpannerServiceImpl();
     mockSpanner.setAbortProbability(0.0D);
     mockSpanner.putStatementResult(

google-cloud-spanner/src/test/java/com/google/cloud/spanner/AbstractMockServerTest.java

@@ -16,6 +16,8 @@
 
 package com.google.cloud.spanner;
 
+import static com.google.cloud.spanner.DisableDefaultMtlsProvider.disableDefaultMtlsProvider;
+
 import com.google.api.gax.grpc.testing.LocalChannelProvider;
 import com.google.cloud.NoCredentials;
 import com.google.cloud.spanner.admin.database.v1.MockDatabaseAdminImpl;
@@ -31,7 +33,6 @@
 import io.grpc.Server;
 import io.grpc.inprocess.InProcessServerBuilder;
 import io.grpc.stub.StreamObserver;
-import java.io.IOException;
 import java.util.concurrent.atomic.AtomicBoolean;
 import org.junit.After;
 import org.junit.AfterClass;
@@ -49,7 +50,8 @@ abstract class AbstractMockServerTest {
   protected Spanner spanner;
 
   @BeforeClass
-  public static void startMockServer() throws IOException {
+  public static void startMockServer() throws Exception {
+    disableDefaultMtlsProvider();
     mockSpanner = new MockSpannerServiceImpl();
     mockSpanner.setAbortProbability(0.0D); // We don't want any unpredictable aborted transactions.
     mockInstanceAdmin = new MockInstanceAdminImpl();

google-cloud-spanner/src/test/java/com/google/cloud/spanner/AbstractNettyMockServerTest.java

@@ -16,6 +16,8 @@
 
 package com.google.cloud.spanner;
 
+import static com.google.cloud.spanner.DisableDefaultMtlsProvider.disableDefaultMtlsProvider;
+
 import com.google.api.gax.grpc.testing.LocalChannelProvider;
 import com.google.cloud.NoCredentials;
 import io.grpc.ForwardingServerCall;
@@ -26,7 +28,6 @@
 import io.grpc.ServerCallHandler;
 import io.grpc.ServerInterceptor;
 import io.grpc.netty.shaded.io.grpc.netty.NettyServerBuilder;
-import java.io.IOException;
 import java.net.InetSocketAddress;
 import java.util.Random;
 import java.util.concurrent.ExecutorService;
@@ -52,7 +53,8 @@ abstract class AbstractNettyMockServerTest {
   protected Spanner spanner;
 
   @BeforeClass
-  public static void startMockServer() throws IOException {
+  public static void startMockServer() throws Exception {
+    disableDefaultMtlsProvider();
     mockSpanner = new MockSpannerServiceImpl();
     mockSpanner.setAbortProbability(0.0D); // We don't want any unpredictable aborted transactions.
 

google-cloud-spanner/src/test/java/com/google/cloud/spanner/BackendExhaustedTest.java

@@ -16,6 +16,7 @@
 
 package com.google.cloud.spanner;
 
+import static com.google.cloud.spanner.DisableDefaultMtlsProvider.disableDefaultMtlsProvider;
 import static com.google.common.truth.Truth.assertThat;
 
 import com.google.api.gax.grpc.testing.LocalChannelProvider;
@@ -32,7 +33,6 @@
 import io.grpc.Server;
 import io.grpc.Status;
 import io.grpc.inprocess.InProcessServerBuilder;
-import java.io.IOException;
 import java.util.concurrent.Executors;
 import java.util.concurrent.ScheduledExecutorService;
 import java.util.concurrent.ScheduledThreadPoolExecutor;
@@ -89,7 +89,8 @@ public class BackendExhaustedTest {
   private DatabaseClientImpl client;
 
   @BeforeClass
-  public static void startStaticServer() throws IOException {
+  public static void startStaticServer() throws Exception {
+    disableDefaultMtlsProvider();
     mockSpanner = new MockSpannerServiceImpl();
     mockSpanner.setAbortProbability(0.0D); // We don't want any unpredictable aborted transactions.
     mockSpanner.putStatementResult(StatementResult.update(UPDATE_STATEMENT, UPDATE_COUNT));

google-cloud-spanner/src/test/java/com/google/cloud/spanner/BatchCreateSessionsSlowTest.java

@@ -15,6 +15,7 @@
  */
 package com.google.cloud.spanner;
 
+import static com.google.cloud.spanner.DisableDefaultMtlsProvider.disableDefaultMtlsProvider;
 import static com.google.cloud.spanner.MockSpannerTestUtil.READ_ONE_KEY_VALUE_RESULTSET;
 import static com.google.cloud.spanner.MockSpannerTestUtil.READ_ONE_KEY_VALUE_STATEMENT;
 import static com.google.cloud.spanner.MockSpannerTestUtil.SELECT1;
@@ -32,7 +33,6 @@
 import com.google.common.util.concurrent.MoreExecutors;
 import io.grpc.Server;
 import io.grpc.inprocess.InProcessServerBuilder;
-import java.io.IOException;
 import java.time.Duration;
 import java.util.ArrayList;
 import java.util.List;
@@ -59,7 +59,8 @@ public class BatchCreateSessionsSlowTest {
   private Spanner spanner;
 
   @BeforeClass
-  public static void startStaticServer() throws IOException {
+  public static void startStaticServer() throws Exception {
+    disableDefaultMtlsProvider();
     mockSpanner = new MockSpannerServiceImpl();
     mockSpanner.setAbortProbability(0.0D); // We don't want any unpredictable aborted transactions.
     mockSpanner.putStatementResult(

google-cloud-spanner/src/test/java/com/google/cloud/spanner/BatchCreateSessionsTest.java

@@ -16,6 +16,7 @@
 
 package com.google.cloud.spanner;
 
+import static com.google.cloud.spanner.DisableDefaultMtlsProvider.disableDefaultMtlsProvider;
 import static org.hamcrest.CoreMatchers.equalTo;
 import static org.hamcrest.CoreMatchers.is;
 import static org.hamcrest.MatcherAssert.assertThat;
@@ -33,7 +34,6 @@
 import io.grpc.Server;
 import io.grpc.Status;
 import io.grpc.inprocess.InProcessServerBuilder;
-import java.io.IOException;
 import java.util.concurrent.TimeUnit;
 import org.junit.AfterClass;
 import org.junit.Before;
@@ -78,7 +78,8 @@ public class BatchCreateSessionsTest {
   private static LocalChannelProvider channelProvider;
 
   @BeforeClass
-  public static void startStaticServer() throws IOException {
+  public static void startStaticServer() throws Exception {
+    disableDefaultMtlsProvider();
     mockSpanner = new MockSpannerServiceImpl();
     mockSpanner.setAbortProbability(0.0D); // We don't want any unpredictable aborted transactions.
     mockSpanner.putStatementResult(StatementResult.query(SELECT1AND2, SELECT1_RESULTSET));

google-cloud-spanner/src/test/java/com/google/cloud/spanner/ChannelUsageTest.java

@@ -16,6 +16,7 @@
 
 package com.google.cloud.spanner;
 
+import static com.google.cloud.spanner.DisableDefaultMtlsProvider.disableDefaultMtlsProvider;
 import static io.grpc.Grpc.TRANSPORT_ATTR_REMOTE_ADDR;
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertTrue;
@@ -40,7 +41,6 @@
 import io.grpc.ServerCallHandler;
 import io.grpc.ServerInterceptor;
 import io.grpc.netty.shaded.io.grpc.netty.NettyServerBuilder;
-import java.io.IOException;
 import java.net.InetSocketAddress;
 import java.time.Duration;
 import java.util.Arrays;
@@ -113,7 +113,8 @@ public static Collection<Object[]> data() {
   private static Level originalLogLevel;
 
   @BeforeClass
-  public static void startServer() throws IOException {
+  public static void startServer() throws Exception {
+    disableDefaultMtlsProvider();
     mockSpanner = new MockSpannerServiceImpl();
     mockSpanner.setAbortProbability(0.0D); // We don't want any unpredictable aborted transactions.
     mockSpanner.putStatementResult(StatementResult.query(SELECT1, SELECT1_RESULTSET));

google-cloud-spanner/src/test/java/com/google/cloud/spanner/DatabaseClientImplTest.java

@@ -16,6 +16,7 @@
 
 package com.google.cloud.spanner;
 
+import static com.google.cloud.spanner.DisableDefaultMtlsProvider.disableDefaultMtlsProvider;
 import static com.google.cloud.spanner.MockSpannerTestUtil.READ_COLUMN_NAMES;
 import static com.google.cloud.spanner.MockSpannerTestUtil.READ_ONE_KEY_VALUE_RESULTSET;
 import static com.google.cloud.spanner.MockSpannerTestUtil.READ_ONE_KEY_VALUE_STATEMENT;
@@ -113,7 +114,6 @@
 import io.grpc.protobuf.lite.ProtoLiteUtils;
 import io.opencensus.trace.Tracing;
 import io.opentelemetry.api.OpenTelemetry;
-import java.io.IOException;
 import java.nio.charset.StandardCharsets;
 import java.time.Duration;
 import java.time.Instant;
@@ -209,7 +209,8 @@ public class DatabaseClientImplTest {
   private static ExecutorService executor;
 
   @BeforeClass
-  public static void startStaticServer() throws IOException {
+  public static void startStaticServer() throws Exception {
+    disableDefaultMtlsProvider();
     mockSpanner = new MockSpannerServiceImpl();
     mockSpanner.setAbortProbability(0.0D); // We don't want any unpredictable aborted transactions.
     mockSpanner.putStatementResult(StatementResult.update(UPDATE_STATEMENT, UPDATE_COUNT));

google-cloud-spanner/src/test/java/com/google/cloud/spanner/DatabaseClientImplWithDefaultRWTransactionOptionsTest.java

@@ -16,6 +16,7 @@
 
 package com.google.cloud.spanner;
 
+import static com.google.cloud.spanner.DisableDefaultMtlsProvider.disableDefaultMtlsProvider;
 import static com.google.cloud.spanner.MockSpannerTestUtil.INVALID_SELECT_STATEMENT;
 import static com.google.cloud.spanner.MockSpannerTestUtil.SELECT1;
 import static com.google.cloud.spanner.MockSpannerTestUtil.SELECT1_RESULTSET;
@@ -41,7 +42,6 @@
 import io.grpc.Server;
 import io.grpc.Status;
 import io.grpc.inprocess.InProcessServerBuilder;
-import java.io.IOException;
 import java.util.Collections;
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
@@ -83,7 +83,8 @@ public class DatabaseClientImplWithDefaultRWTransactionOptionsTest {
   private DatabaseClient clientWithSerOptimisticOption;
 
   @BeforeClass
-  public static void startStaticServer() throws IOException {
+  public static void startStaticServer() throws Exception {
+    disableDefaultMtlsProvider();
     mockSpanner = new MockSpannerServiceImpl();
     mockSpanner.setAbortProbability(0.0D); // We don't want any unpredictable aborted transactions.
     mockSpanner.putStatementResult(StatementResult.update(UPDATE_STATEMENT, UPDATE_COUNT));