Fix flaky test for VolumeDialogImplTest.

We only care about whether or not the show/dismiss signals are sent. The
invocation times should be irrelevant.

Test: VolumeDialogImplTest
Bug: 347128147
Flag: com.android.systemui.enable_contextual_tip_for_mute_volume
Change-Id: Ie389b723e3e9ff58de8d90e24f8c93db47d14f7d
diff --git a/packages/SystemUI/tests/src/com/android/systemui/volume/VolumeDialogImplTest.java b/packages/SystemUI/tests/src/com/android/systemui/volume/VolumeDialogImplTest.java
index 4654a4d..6efb7d8 100644
--- a/packages/SystemUI/tests/src/com/android/systemui/volume/VolumeDialogImplTest.java
+++ b/packages/SystemUI/tests/src/com/android/systemui/volume/VolumeDialogImplTest.java
@@ -35,6 +35,7 @@
 import static org.mockito.ArgumentMatchers.any;
 import static org.mockito.ArgumentMatchers.anyInt;
 import static org.mockito.ArgumentMatchers.eq;
+import static org.mockito.Mockito.atLeastOnce;
 import static org.mockito.Mockito.never;
 import static org.mockito.Mockito.reset;
 import static org.mockito.Mockito.times;
@@ -783,8 +784,8 @@
         mDialog.show(SHOW_REASON_UNKNOWN);
         mTestableLooper.processAllMessages();
 
-        verify(mVolumeDialogInteractor).onDialogShown();
-        verify(mVolumeDialogInteractor).onDialogDismissed(); // dismiss by timeout
+        verify(mVolumeDialogInteractor, atLeastOnce()).onDialogShown();
+        verify(mVolumeDialogInteractor, atLeastOnce()).onDialogDismissed(); // dismiss by timeout
     }
 
     /**