diff --git a/tests/Android.bp b/tests/Android.bp
index d4f964b..7f04611 100644
--- a/tests/Android.bp
+++ b/tests/Android.bp
@@ -1,4 +1,4 @@
-//  Copyright (C) 2023 The Android Open Source Project
+//  Copyright (C) 2015 The Android Open Source Project
 //
 //  Licensed under the Apache License, Version 2.0 (the "License");
 //  you may not use this file except in compliance with the License.
@@ -29,7 +29,10 @@
     sdk_version: "current",
     test_suites: ["general-tests"],
     certificate: "platform",
-    static_libs: ["mockito-target"],
+    static_libs: [
+        "mockito-target",
+        "androidx.test.rules",
+    ],
     libs: [
         "android.test.mock.stubs",
         "android.test.runner.stubs",
diff --git a/tests/src/com/android/messaging/datamodel/BindingTest.java b/tests/src/com/android/messaging/datamodel/BindingTest.java
index 9205657..6052ed1 100644
--- a/tests/src/com/android/messaging/datamodel/BindingTest.java
+++ b/tests/src/com/android/messaging/datamodel/BindingTest.java
@@ -16,7 +16,7 @@
 
 package com.android.messaging.datamodel;
 
-import android.test.suitebuilder.annotation.SmallTest;
+import androidx.test.filters.SmallTest;
 
 import com.android.messaging.BugleTestCase;
 import com.android.messaging.datamodel.binding.BindableData;
diff --git a/tests/src/com/android/messaging/datamodel/BitmapPoolTest.java b/tests/src/com/android/messaging/datamodel/BitmapPoolTest.java
index 6d0aaa3..c7bb3d9 100644
--- a/tests/src/com/android/messaging/datamodel/BitmapPoolTest.java
+++ b/tests/src/com/android/messaging/datamodel/BitmapPoolTest.java
@@ -19,7 +19,8 @@
 import android.content.res.Resources;
 import android.graphics.Bitmap;
 import android.graphics.BitmapFactory;
-import android.test.suitebuilder.annotation.SmallTest;
+
+import androidx.test.filters.SmallTest;
 
 import com.android.messaging.BugleTestCase;
 import com.android.messaging.FakeFactory;
diff --git a/tests/src/com/android/messaging/datamodel/ConversationListTest.java b/tests/src/com/android/messaging/datamodel/ConversationListTest.java
index f45696b..b9ef5d0 100644
--- a/tests/src/com/android/messaging/datamodel/ConversationListTest.java
+++ b/tests/src/com/android/messaging/datamodel/ConversationListTest.java
@@ -16,7 +16,7 @@
 
 package com.android.messaging.datamodel;
 
-import android.test.suitebuilder.annotation.SmallTest;
+import androidx.test.filters.SmallTest;
 
 import com.android.messaging.BugleTestCase;
 
diff --git a/tests/src/com/android/messaging/datamodel/DataModelTest.java b/tests/src/com/android/messaging/datamodel/DataModelTest.java
index 0a1bccd..701f053 100644
--- a/tests/src/com/android/messaging/datamodel/DataModelTest.java
+++ b/tests/src/com/android/messaging/datamodel/DataModelTest.java
@@ -16,13 +16,13 @@
 
 package com.android.messaging.datamodel;
 
-import android.test.suitebuilder.annotation.SmallTest;
+import androidx.test.filters.SmallTest;
 
 import com.android.messaging.BugleTestCase;
 import com.android.messaging.FakeFactory;
 import com.android.messaging.datamodel.data.ConversationData;
-import com.android.messaging.datamodel.data.ConversationListData;
 import com.android.messaging.datamodel.data.ConversationData.ConversationDataListener;
+import com.android.messaging.datamodel.data.ConversationListData;
 import com.android.messaging.datamodel.data.ConversationListData.ConversationListDataListener;
 
 import org.mockito.Mock;
diff --git a/tests/src/com/android/messaging/datamodel/FrequentContactsCursorBuilderTest.java b/tests/src/com/android/messaging/datamodel/FrequentContactsCursorBuilderTest.java
index 6b78a07..afa95bb 100644
--- a/tests/src/com/android/messaging/datamodel/FrequentContactsCursorBuilderTest.java
+++ b/tests/src/com/android/messaging/datamodel/FrequentContactsCursorBuilderTest.java
@@ -16,7 +16,8 @@
 package com.android.messaging.datamodel;
 
 import android.database.Cursor;
-import android.test.suitebuilder.annotation.SmallTest;
+
+import androidx.test.filters.SmallTest;
 
 import com.android.messaging.BugleTestCase;
 import com.android.messaging.datamodel.data.TestDataFactory;
diff --git a/tests/src/com/android/messaging/datamodel/MemoryCacheManagerTest.java b/tests/src/com/android/messaging/datamodel/MemoryCacheManagerTest.java
index 5da9e27..a4d8849 100644
--- a/tests/src/com/android/messaging/datamodel/MemoryCacheManagerTest.java
+++ b/tests/src/com/android/messaging/datamodel/MemoryCacheManagerTest.java
@@ -17,7 +17,8 @@
 package com.android.messaging.datamodel;
 
 import android.test.AndroidTestCase;
-import android.test.suitebuilder.annotation.SmallTest;
+
+import androidx.test.filters.SmallTest;
 
 import com.android.messaging.datamodel.MemoryCacheManager.MemoryCache;
 
diff --git a/tests/src/com/android/messaging/datamodel/ParticipantRefreshTest.java b/tests/src/com/android/messaging/datamodel/ParticipantRefreshTest.java
index d585e10..c0d5c0a 100644
--- a/tests/src/com/android/messaging/datamodel/ParticipantRefreshTest.java
+++ b/tests/src/com/android/messaging/datamodel/ParticipantRefreshTest.java
@@ -20,9 +20,10 @@
 import android.content.ContentValues;
 import android.database.Cursor;
 import android.net.Uri;
-import android.test.suitebuilder.annotation.SmallTest;
 import android.text.TextUtils;
 
+import androidx.test.filters.SmallTest;
+
 import com.android.messaging.BugleTestCase;
 import com.android.messaging.FakeContentProvider;
 import com.android.messaging.FakeContext;
diff --git a/tests/src/com/android/messaging/datamodel/action/ActionServiceSystemTest.java b/tests/src/com/android/messaging/datamodel/action/ActionServiceSystemTest.java
index 4d1ad5d..725f159 100644
--- a/tests/src/com/android/messaging/datamodel/action/ActionServiceSystemTest.java
+++ b/tests/src/com/android/messaging/datamodel/action/ActionServiceSystemTest.java
@@ -20,9 +20,10 @@
 import android.os.Bundle;
 import android.os.Parcel;
 import android.os.Parcelable;
-import android.test.suitebuilder.annotation.MediumTest;
 import android.util.Log;
 
+import androidx.test.filters.MediumTest;
+
 import com.android.messaging.BugleTestCase;
 import com.android.messaging.Factory;
 import com.android.messaging.FakeContext;
@@ -37,8 +38,6 @@
 import com.android.messaging.datamodel.action.ActionTestHelpers.StubBackgroundWorker;
 import com.android.messaging.datamodel.action.ActionTestHelpers.StubLoader;
 
-import java.util.ArrayList;
-
 @MediumTest
 public class ActionServiceSystemTest extends BugleServiceTestCase<ActionServiceImpl>
         implements ActionCompletedListener, ActionExecutedListener, FakeContextHost {
diff --git a/tests/src/com/android/messaging/datamodel/action/ActionServiceTest.java b/tests/src/com/android/messaging/datamodel/action/ActionServiceTest.java
index 8daafb8..19c6c00 100644
--- a/tests/src/com/android/messaging/datamodel/action/ActionServiceTest.java
+++ b/tests/src/com/android/messaging/datamodel/action/ActionServiceTest.java
@@ -21,10 +21,10 @@
 import android.os.Looper;
 import android.os.Parcel;
 import android.os.Parcelable;
-import android.os.Process;
-import android.test.suitebuilder.annotation.MediumTest;
 import android.util.Log;
 
+import androidx.test.filters.MediumTest;
+
 import com.android.messaging.Factory;
 import com.android.messaging.FakeContext;
 import com.android.messaging.FakeContext.FakeContextHost;
diff --git a/tests/src/com/android/messaging/datamodel/action/ActionTest.java b/tests/src/com/android/messaging/datamodel/action/ActionTest.java
index aefa25e..c24884d 100644
--- a/tests/src/com/android/messaging/datamodel/action/ActionTest.java
+++ b/tests/src/com/android/messaging/datamodel/action/ActionTest.java
@@ -19,8 +19,9 @@
 import android.os.Bundle;
 import android.os.Parcel;
 import android.os.Parcelable;
-import android.test.suitebuilder.annotation.MediumTest;
-import android.test.suitebuilder.annotation.SmallTest;
+
+import androidx.test.filters.MediumTest;
+import androidx.test.filters.SmallTest;
 
 import com.android.messaging.BugleTestCase;
 import com.android.messaging.FakeFactory;
diff --git a/tests/src/com/android/messaging/datamodel/action/GetOrCreateConversationActionTest.java b/tests/src/com/android/messaging/datamodel/action/GetOrCreateConversationActionTest.java
index 1b6b8ba..24f488a 100644
--- a/tests/src/com/android/messaging/datamodel/action/GetOrCreateConversationActionTest.java
+++ b/tests/src/com/android/messaging/datamodel/action/GetOrCreateConversationActionTest.java
@@ -20,7 +20,8 @@
 import android.database.Cursor;
 import android.net.Uri;
 import android.test.mock.MockContentProvider;
-import android.test.suitebuilder.annotation.SmallTest;
+
+import androidx.test.filters.SmallTest;
 
 import com.android.messaging.BugleTestCase;
 import com.android.messaging.FakeContext;
diff --git a/tests/src/com/android/messaging/datamodel/action/ReadWriteDraftMessageActionTest.java b/tests/src/com/android/messaging/datamodel/action/ReadWriteDraftMessageActionTest.java
index 1064aa3..459dd7d 100644
--- a/tests/src/com/android/messaging/datamodel/action/ReadWriteDraftMessageActionTest.java
+++ b/tests/src/com/android/messaging/datamodel/action/ReadWriteDraftMessageActionTest.java
@@ -20,9 +20,10 @@
 import android.content.pm.ProviderInfo;
 import android.database.Cursor;
 import android.net.Uri;
-import android.test.suitebuilder.annotation.SmallTest;
 import android.text.TextUtils;
 
+import androidx.test.filters.SmallTest;
+
 import com.android.messaging.BugleTestCase;
 import com.android.messaging.FakeContext;
 import com.android.messaging.FakeFactory;
diff --git a/tests/src/com/android/messaging/datamodel/data/ConversationMessageDataTest.java b/tests/src/com/android/messaging/datamodel/data/ConversationMessageDataTest.java
index c6b9b20..42b51fd 100644
--- a/tests/src/com/android/messaging/datamodel/data/ConversationMessageDataTest.java
+++ b/tests/src/com/android/messaging/datamodel/data/ConversationMessageDataTest.java
@@ -15,13 +15,11 @@
  */
 package com.android.messaging.datamodel.data;
 
-import android.test.suitebuilder.annotation.SmallTest;
+import androidx.test.filters.SmallTest;
 
 import com.android.messaging.BugleTestCase;
 import com.android.messaging.FakeFactory;
 import com.android.messaging.datamodel.FakeCursor;
-import com.android.messaging.datamodel.data.ConversationMessageData;
-import com.android.messaging.datamodel.data.MessageData;
 import com.android.messaging.datamodel.data.ConversationMessageData.ConversationMessageViewColumns;
 
 @SmallTest
diff --git a/tests/src/com/android/messaging/datamodel/data/ConversationParticipantsDataTest.java b/tests/src/com/android/messaging/datamodel/data/ConversationParticipantsDataTest.java
index 527a600..b250f80 100644
--- a/tests/src/com/android/messaging/datamodel/data/ConversationParticipantsDataTest.java
+++ b/tests/src/com/android/messaging/datamodel/data/ConversationParticipantsDataTest.java
@@ -15,13 +15,11 @@
  */
 package com.android.messaging.datamodel.data;
 
-import android.test.suitebuilder.annotation.SmallTest;
+import androidx.test.filters.SmallTest;
 
 import com.android.messaging.BugleTestCase;
-import com.android.messaging.datamodel.FakeCursor;
 import com.android.messaging.datamodel.DatabaseHelper.ParticipantColumns;
-import com.android.messaging.datamodel.data.ConversationParticipantsData;
-import com.android.messaging.datamodel.data.ParticipantData;
+import com.android.messaging.datamodel.FakeCursor;
 
 @SmallTest
 public class ConversationParticipantsDataTest extends BugleTestCase {
diff --git a/tests/src/com/android/messaging/datamodel/media/ImageRequestTest.java b/tests/src/com/android/messaging/datamodel/media/ImageRequestTest.java
index 2cfec7d..3e0f4e0 100644
--- a/tests/src/com/android/messaging/datamodel/media/ImageRequestTest.java
+++ b/tests/src/com/android/messaging/datamodel/media/ImageRequestTest.java
@@ -18,7 +18,8 @@
 import android.content.ContentResolver;
 import android.graphics.BitmapFactory;
 import android.net.Uri;
-import android.test.suitebuilder.annotation.SmallTest;
+
+import androidx.test.filters.SmallTest;
 
 import com.android.messaging.BugleTestCase;
 import com.android.messaging.FakeFactory;
diff --git a/tests/src/com/android/messaging/datamodel/media/MediaResourceManagerTest.java b/tests/src/com/android/messaging/datamodel/media/MediaResourceManagerTest.java
index d214067..c5054ad 100644
--- a/tests/src/com/android/messaging/datamodel/media/MediaResourceManagerTest.java
+++ b/tests/src/com/android/messaging/datamodel/media/MediaResourceManagerTest.java
@@ -15,7 +15,7 @@
  */
 package com.android.messaging.datamodel.media;
 
-import android.test.suitebuilder.annotation.SmallTest;
+import androidx.test.filters.SmallTest;
 
 import com.android.messaging.BugleTestCase;
 import com.android.messaging.FakeFactory;
diff --git a/tests/src/com/android/messaging/ui/MultiAttachmentLayoutTest.java b/tests/src/com/android/messaging/ui/MultiAttachmentLayoutTest.java
index cf9a647..db3ff3a 100644
--- a/tests/src/com/android/messaging/ui/MultiAttachmentLayoutTest.java
+++ b/tests/src/com/android/messaging/ui/MultiAttachmentLayoutTest.java
@@ -19,11 +19,12 @@
 
 import android.content.Context;
 import android.net.Uri;
-import android.test.suitebuilder.annotation.MediumTest;
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.TextView;
 
+import androidx.test.filters.MediumTest;
+
 import com.android.messaging.FakeFactory;
 import com.android.messaging.datamodel.data.MessagePartData;
 
diff --git a/tests/src/com/android/messaging/ui/attachmentchooser/AttachmentChooserFragmentTest.java b/tests/src/com/android/messaging/ui/attachmentchooser/AttachmentChooserFragmentTest.java
index e81cd54..d723a40 100644
--- a/tests/src/com/android/messaging/ui/attachmentchooser/AttachmentChooserFragmentTest.java
+++ b/tests/src/com/android/messaging/ui/attachmentchooser/AttachmentChooserFragmentTest.java
@@ -17,9 +17,10 @@
 package com.android.messaging.ui.attachmentchooser;
 
 import android.app.Fragment;
-import android.test.suitebuilder.annotation.LargeTest;
 import android.widget.CheckBox;
 
+import androidx.test.filters.LargeTest;
+
 import com.android.messaging.FakeFactory;
 import com.android.messaging.R;
 import com.android.messaging.datamodel.DataModel;
@@ -28,11 +29,7 @@
 import com.android.messaging.datamodel.data.MessagePartData;
 import com.android.messaging.datamodel.data.TestDataFactory;
 import com.android.messaging.ui.FragmentTestCase;
-import com.android.messaging.ui.TestActivity;
 import com.android.messaging.ui.TestActivity.FragmentEventListener;
-import com.android.messaging.ui.attachmentchooser.AttachmentChooserFragment;
-import com.android.messaging.ui.attachmentchooser.AttachmentGridItemView;
-import com.android.messaging.ui.attachmentchooser.AttachmentGridView;
 import com.android.messaging.ui.attachmentchooser.AttachmentChooserFragment.AttachmentChooserFragmentHost;
 import com.android.messaging.ui.conversationlist.ConversationListFragment;
 
@@ -46,7 +43,6 @@
 import java.util.List;
 import java.util.Set;
 
-
 /**
  * Unit tests for {@link ConversationListFragment}.
  */
diff --git a/tests/src/com/android/messaging/ui/contact/ContactPickerFragmentTest.java b/tests/src/com/android/messaging/ui/contact/ContactPickerFragmentTest.java
index 47b65f1..4983cd3 100644
--- a/tests/src/com/android/messaging/ui/contact/ContactPickerFragmentTest.java
+++ b/tests/src/com/android/messaging/ui/contact/ContactPickerFragmentTest.java
@@ -18,18 +18,17 @@
 
 import android.content.Context;
 import android.database.Cursor;
-import androidx.viewpager.widget.PagerAdapter;
-import androidx.viewpager.widget.ViewPager;
-import android.test.suitebuilder.annotation.LargeTest;
 import android.view.View;
 import android.widget.ListView;
 
+import androidx.test.filters.LargeTest;
+import androidx.viewpager.widget.ViewPager;
+
 import com.android.messaging.FakeFactory;
 import com.android.messaging.R;
 import com.android.messaging.datamodel.FakeDataModel;
 import com.android.messaging.datamodel.action.ActionTestHelpers;
 import com.android.messaging.datamodel.action.ActionTestHelpers.StubActionService;
-import com.android.messaging.datamodel.action.ActionTestHelpers.StubActionService.StubActionServiceCallLog;
 import com.android.messaging.datamodel.action.GetOrCreateConversationAction;
 import com.android.messaging.datamodel.data.ContactPickerData;
 import com.android.messaging.datamodel.data.ParticipantData;
@@ -37,17 +36,14 @@
 import com.android.messaging.ui.CustomHeaderViewPagerAdapter;
 import com.android.messaging.ui.FragmentTestCase;
 import com.android.messaging.ui.UIIntents;
-import com.android.messaging.ui.contact.ContactPickerFragment;
 import com.android.messaging.ui.contact.ContactPickerFragment.ContactPickerFragmentHost;
 
 import org.mockito.Matchers;
 import org.mockito.Mock;
 import org.mockito.Mockito;
 
-import java.util.ArrayList;
 import java.util.List;
 
-
 /**
  * Unit tests for {@link ContactPickerFragment}.
  */
diff --git a/tests/src/com/android/messaging/ui/conversation/ComposeMessageViewTest.java b/tests/src/com/android/messaging/ui/conversation/ComposeMessageViewTest.java
index 2148c71..9d55b6e 100644
--- a/tests/src/com/android/messaging/ui/conversation/ComposeMessageViewTest.java
+++ b/tests/src/com/android/messaging/ui/conversation/ComposeMessageViewTest.java
@@ -21,10 +21,11 @@
 
 import android.content.Context;
 import android.media.MediaPlayer;
-import android.test.suitebuilder.annotation.MediumTest;
 import android.view.View;
 import android.widget.EditText;
 
+import androidx.test.filters.MediumTest;
+
 import com.android.messaging.FakeFactory;
 import com.android.messaging.R;
 import com.android.messaging.datamodel.DataModel;
@@ -42,7 +43,6 @@
 import com.android.messaging.util.FakeMediaUtil;
 import com.android.messaging.util.ImeUtil;
 
-import org.mockito.ArgumentMatcher;
 import org.mockito.Matchers;
 import org.mockito.Mock;
 import org.mockito.Mockito;
diff --git a/tests/src/com/android/messaging/ui/conversation/ConversationActivityUiStateTest.java b/tests/src/com/android/messaging/ui/conversation/ConversationActivityUiStateTest.java
index 7c6903d..0fec12e 100644
--- a/tests/src/com/android/messaging/ui/conversation/ConversationActivityUiStateTest.java
+++ b/tests/src/com/android/messaging/ui/conversation/ConversationActivityUiStateTest.java
@@ -16,12 +16,12 @@
 
 package com.android.messaging.ui.conversation;
 
-import android.test.suitebuilder.annotation.SmallTest;
 import android.text.TextUtils;
 
+import androidx.test.filters.SmallTest;
+
 import com.android.messaging.BugleTestCase;
 import com.android.messaging.ui.contact.ContactPickerFragment;
-import com.android.messaging.ui.conversation.ConversationActivityUiState;
 import com.android.messaging.ui.conversation.ConversationActivityUiState.ConversationActivityUiStateHost;
 
 import org.mockito.Mock;
diff --git a/tests/src/com/android/messaging/ui/conversation/ConversationFragmentTest.java b/tests/src/com/android/messaging/ui/conversation/ConversationFragmentTest.java
index 658a1be..030306a 100644
--- a/tests/src/com/android/messaging/ui/conversation/ConversationFragmentTest.java
+++ b/tests/src/com/android/messaging/ui/conversation/ConversationFragmentTest.java
@@ -19,9 +19,9 @@
 import android.app.Activity;
 import android.app.Fragment;
 import android.database.Cursor;
+
 import androidx.recyclerview.widget.RecyclerView;
-import androidx.recyclerview.widget.RecyclerView.Adapter;
-import android.test.suitebuilder.annotation.LargeTest;
+import androidx.test.filters.LargeTest;
 
 import com.android.messaging.FakeFactory;
 import com.android.messaging.R;
@@ -44,7 +44,6 @@
 import org.mockito.Mock;
 import org.mockito.Mockito;
 
-
 /**
  * Unit tests for {@link ConversationListFragment}.
  */
diff --git a/tests/src/com/android/messaging/ui/conversation/ConversationInputManagerTest.java b/tests/src/com/android/messaging/ui/conversation/ConversationInputManagerTest.java
index f335785..6dff635 100644
--- a/tests/src/com/android/messaging/ui/conversation/ConversationInputManagerTest.java
+++ b/tests/src/com/android/messaging/ui/conversation/ConversationInputManagerTest.java
@@ -18,9 +18,10 @@
 import android.app.FragmentManager;
 import android.app.FragmentTransaction;
 import android.os.Bundle;
-import android.test.suitebuilder.annotation.SmallTest;
 import android.widget.EditText;
 
+import androidx.test.filters.SmallTest;
+
 import com.android.messaging.BugleTestCase;
 import com.android.messaging.FakeFactory;
 import com.android.messaging.R;
diff --git a/tests/src/com/android/messaging/ui/conversation/ConversationMessageViewTest.java b/tests/src/com/android/messaging/ui/conversation/ConversationMessageViewTest.java
index 6b8b0c0..6833df2 100644
--- a/tests/src/com/android/messaging/ui/conversation/ConversationMessageViewTest.java
+++ b/tests/src/com/android/messaging/ui/conversation/ConversationMessageViewTest.java
@@ -16,17 +16,16 @@
 
 package com.android.messaging.ui.conversation;
 
-import android.test.suitebuilder.annotation.MediumTest;
-import android.test.suitebuilder.annotation.Suppress;
 import android.view.View;
 import android.widget.TextView;
 
+import androidx.test.filters.MediumTest;
+
 import com.android.messaging.FakeFactory;
 import com.android.messaging.R;
 import com.android.messaging.datamodel.FakeCursor;
 import com.android.messaging.datamodel.data.TestDataFactory;
 import com.android.messaging.ui.ViewTest;
-import com.android.messaging.ui.conversation.ConversationMessageView;
 import com.android.messaging.ui.conversation.ConversationMessageView.ConversationMessageViewHost;
 import com.android.messaging.util.Dates;
 
diff --git a/tests/src/com/android/messaging/ui/conversationlist/ConversationListFragmentTest.java b/tests/src/com/android/messaging/ui/conversationlist/ConversationListFragmentTest.java
index 6add677..c3da81c 100644
--- a/tests/src/com/android/messaging/ui/conversationlist/ConversationListFragmentTest.java
+++ b/tests/src/com/android/messaging/ui/conversationlist/ConversationListFragmentTest.java
@@ -18,11 +18,11 @@
 
 import android.content.Context;
 import android.database.Cursor;
-import androidx.recyclerview.widget.RecyclerView;
-import android.test.suitebuilder.annotation.LargeTest;
 import android.view.View;
 import android.widget.ImageView;
-import android.widget.ListView;
+
+import androidx.recyclerview.widget.RecyclerView;
+import androidx.test.filters.LargeTest;
 
 import com.android.messaging.FakeFactory;
 import com.android.messaging.R;
@@ -31,14 +31,12 @@
 import com.android.messaging.datamodel.data.TestDataFactory;
 import com.android.messaging.ui.FragmentTestCase;
 import com.android.messaging.ui.UIIntents;
-import com.android.messaging.ui.conversationlist.ConversationListFragment;
 import com.android.messaging.ui.conversationlist.ConversationListFragment.ConversationListFragmentHost;
 
 import org.mockito.Matchers;
 import org.mockito.Mock;
 import org.mockito.Mockito;
 
-
 /**
  * Unit tests for {@link ConversationListFragment}.
  */
diff --git a/tests/src/com/android/messaging/ui/conversationlist/ConversationListItemViewTest.java b/tests/src/com/android/messaging/ui/conversationlist/ConversationListItemViewTest.java
index afac0d8..c96ab44 100644
--- a/tests/src/com/android/messaging/ui/conversationlist/ConversationListItemViewTest.java
+++ b/tests/src/com/android/messaging/ui/conversationlist/ConversationListItemViewTest.java
@@ -17,11 +17,12 @@
 package com.android.messaging.ui.conversationlist;
 
 import android.content.Context;
-import android.test.suitebuilder.annotation.MediumTest;
 import android.text.TextUtils;
 import android.view.View;
 import android.widget.TextView;
 
+import androidx.test.filters.MediumTest;
+
 import com.android.messaging.Factory;
 import com.android.messaging.FakeFactory;
 import com.android.messaging.R;
@@ -32,7 +33,6 @@
 import com.android.messaging.ui.AsyncImageView;
 import com.android.messaging.ui.UIIntentsImpl;
 import com.android.messaging.ui.ViewTest;
-import com.android.messaging.ui.conversationlist.ConversationListItemView;
 import com.android.messaging.util.Dates;
 
 import org.mockito.ArgumentMatcher;
diff --git a/tests/src/com/android/messaging/ui/mediapicker/CameraManagerTest.java b/tests/src/com/android/messaging/ui/mediapicker/CameraManagerTest.java
index e81a548..7417c32 100644
--- a/tests/src/com/android/messaging/ui/mediapicker/CameraManagerTest.java
+++ b/tests/src/com/android/messaging/ui/mediapicker/CameraManagerTest.java
@@ -19,9 +19,12 @@
 import android.hardware.Camera;
 import android.hardware.Camera.CameraInfo;
 import android.os.AsyncTask;
-import android.test.suitebuilder.annotation.SmallTest;
+
+import androidx.test.filters.SmallTest;
+
 import com.android.messaging.BugleTestCase;
 import com.android.messaging.ui.mediapicker.CameraManager.CameraWrapper;
+
 import org.mockito.InOrder;
 import org.mockito.Mockito;
 
diff --git a/tests/src/com/android/messaging/util/BugleGservicesTest.java b/tests/src/com/android/messaging/util/BugleGservicesTest.java
index 1a0a10e..e8f1a22 100644
--- a/tests/src/com/android/messaging/util/BugleGservicesTest.java
+++ b/tests/src/com/android/messaging/util/BugleGservicesTest.java
@@ -15,7 +15,7 @@
  */
 package com.android.messaging.util;
 
-import android.test.suitebuilder.annotation.SmallTest;
+import androidx.test.filters.SmallTest;
 
 import com.android.messaging.BugleTestCase;
 
diff --git a/tests/src/com/android/messaging/util/ContactUtilTest.java b/tests/src/com/android/messaging/util/ContactUtilTest.java
index 4f0ca9b..0a3cfe8 100644
--- a/tests/src/com/android/messaging/util/ContactUtilTest.java
+++ b/tests/src/com/android/messaging/util/ContactUtilTest.java
@@ -22,9 +22,10 @@
 import android.net.Uri;
 import android.provider.ContactsContract;
 import android.provider.ContactsContract.Contacts;
-import android.test.suitebuilder.annotation.LargeTest;
 import android.text.TextUtils;
 
+import androidx.test.filters.LargeTest;
+
 import com.android.messaging.BugleTestCase;
 import com.android.messaging.FakeFactory;
 
diff --git a/tests/src/com/android/messaging/util/YouTubeUtilTest.java b/tests/src/com/android/messaging/util/YouTubeUtilTest.java
index 03c461a..072d3e5 100644
--- a/tests/src/com/android/messaging/util/YouTubeUtilTest.java
+++ b/tests/src/com/android/messaging/util/YouTubeUtilTest.java
@@ -16,7 +16,7 @@
 
 package com.android.messaging.util;
 
-import android.test.suitebuilder.annotation.SmallTest;
+import androidx.test.filters.SmallTest;
 
 import com.android.messaging.BugleTestCase;