Use a realistic Executor in BinderServerTransportTest (#10979)

binder/build.gradle

@@ -27,6 +27,7 @@ android {
             withJavadocJar()
         }
     }
+    testFixtures { enable true }
 }
 
 repositories {
@@ -70,6 +71,8 @@ dependencies {
     androidTestImplementation libraries.androidx.lifecycle.service
     androidTestImplementation libraries.guava.testlib
     androidTestImplementation testFixtures(project(':grpc-core'))
+
+    testFixturesImplementation libraries.guava.testlib
 }
 
 import net.ltgt.gradle.errorprone.CheckSeverity
@@ -123,3 +126,8 @@ publishing {
         }
     }
 }
+
+afterEvaluate {
+    components.release.withVariantsFromConfiguration(configurations.releaseTestFixturesVariantReleaseApiPublication) { skip() }
+    components.release.withVariantsFromConfiguration(configurations.releaseTestFixturesVariantReleaseRuntimePublication) { skip() }
+}

binder/src/test/java/io/grpc/binder/RobolectricBinderSecurityTest.java

@@ -21,6 +21,7 @@ import static com.google.common.truth.Truth.assertThat;
 import static com.google.common.util.concurrent.MoreExecutors.directExecutor;
 import static org.robolectric.Shadows.shadowOf;
 
+import io.grpc.binder.internal.MainThreadScheduledExecutorService;
 import android.app.Application;
 import android.content.ComponentName;
 import android.content.Intent;

binder/src/test/java/io/grpc/binder/internal/BinderServerTransportTest.java

@@ -22,15 +22,17 @@ import static org.mockito.ArgumentMatchers.any;
 import static org.mockito.ArgumentMatchers.anyInt;
 import static org.mockito.ArgumentMatchers.isNull;
 import static org.mockito.Mockito.when;
+import static org.robolectric.Shadows.shadowOf;
 import static org.robolectric.annotation.LooperMode.Mode.PAUSED;
 
 import android.os.IBinder;
+import android.os.Looper;
 import android.os.Parcel;
 import com.google.common.collect.ImmutableList;
-import com.google.common.util.concurrent.testing.TestingExecutors;
 import io.grpc.Attributes;
 import io.grpc.Metadata;
 import io.grpc.Status;
+import io.grpc.binder.internal.MainThreadScheduledExecutorService;
 import io.grpc.internal.FixedObjectPool;
 import io.grpc.internal.ServerStream;
 import io.grpc.internal.ServerTransportListener;
@@ -56,8 +58,7 @@ public final class BinderServerTransportTest {
 
   @Rule public MockitoRule mocks = MockitoJUnit.rule();
 
-  private final ScheduledExecutorService executorService =
-      TestingExecutors.sameThreadScheduledExecutor();
+  private final ScheduledExecutorService executorService = new MainThreadScheduledExecutorService();
   private final TestTransportListener transportListener = new TestTransportListener();
 
   @Mock IBinder mockBinder;
@@ -83,6 +84,7 @@ public final class BinderServerTransportTest {
 
     // Now shut it down.
     transport.shutdownNow(Status.UNKNOWN.withDescription("reasons"));
+    shadowOf(Looper.getMainLooper()).idle();
 
     assertThat(transportListener.terminated).isTrue();
   }

binder/src/testFixtures/java/io/grpc/binder/internal/MainThreadScheduledExecutorService.java

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package io.grpc.binder;
+package io.grpc.binder.internal;
 
 import android.os.Handler;
 import android.os.Looper;
@@ -37,7 +37,7 @@ import java.util.concurrent.TimeoutException;
  *
  * <p>Use {@link org.robolectric.shadows.ShadowLooper#idle()} to run queued work.
  */
-class MainThreadScheduledExecutorService extends AbstractExecutorService
+public class MainThreadScheduledExecutorService extends AbstractExecutorService
     implements ScheduledExecutorService {
 
   private final Handler handler = new Handler(Looper.getMainLooper());