Implement shadow for UserManager#getMainUser

Not having the implementation causes B&R robolectric tests fail with a NPE.

Bug: 263981306
Test: atest BackupFrameworksServicesRoboTests
Change-Id: I47bf7ba42cf3bd23e472f8c9a21e4e657053ad42

4 files changed, 16 insertions, 3 deletions

diff --git a/services/robotests/backup/src/com/android/server/backup/UserBackupManagerServiceTest.java b/services/robotests/backup/src/com/android/server/backup/UserBackupManagerServiceTest.java
index 159285a5ce5e..2878743d8a5f 100644
--- a/services/robotests/backup/src/com/android/server/backup/UserBackupManagerServiceTest.java
+++ b/services/robotests/backup/src/com/android/server/backup/UserBackupManagerServiceTest.java
@@ -67,6 +67,7 @@ import com.android.server.testing.shadows.ShadowBinder;
 import com.android.server.testing.shadows.ShadowKeyValueBackupJob;
 import com.android.server.testing.shadows.ShadowKeyValueBackupTask;
 import com.android.server.testing.shadows.ShadowSystemServiceRegistry;
+import com.android.server.testing.shadows.ShadowUserManager;
 
 import org.junit.After;
 import org.junit.Before;
@@ -101,7 +102,8 @@ import java.util.List;
         shadows = {
             ShadowBackupEligibilityRules.class,
             ShadowApplicationPackageManager.class,
-            ShadowSystemServiceRegistry.class
+            ShadowSystemServiceRegistry.class,
+            ShadowUserManager.class
         })
 @Presubmit
 public class UserBackupManagerServiceTest {
diff --git a/services/robotests/backup/src/com/android/server/backup/internal/SetupObserverTest.java b/services/robotests/backup/src/com/android/server/backup/internal/SetupObserverTest.java
index e49425b00322..ed7bc74e7ceb 100644
--- a/services/robotests/backup/src/com/android/server/backup/internal/SetupObserverTest.java
+++ b/services/robotests/backup/src/com/android/server/backup/internal/SetupObserverTest.java
@@ -33,6 +33,7 @@ import com.android.server.backup.UserBackupManagerService;
 import com.android.server.backup.testing.BackupManagerServiceTestUtils;
 import com.android.server.testing.shadows.ShadowApplicationPackageManager;
 import com.android.server.testing.shadows.ShadowSystemServiceRegistry;
+import com.android.server.testing.shadows.ShadowUserManager;
 
 import org.junit.Before;
 import org.junit.Test;
@@ -56,7 +57,8 @@ import java.io.File;
         shadows = {
             ShadowApplicationPackageManager.class,
             ShadowJobScheduler.class,
-            ShadowSystemServiceRegistry.class
+            ShadowSystemServiceRegistry.class,
+            ShadowUserManager.class
         })
 @Presubmit
 public class SetupObserverTest {
diff --git a/services/robotests/backup/src/com/android/server/backup/keyvalue/KeyValueBackupTaskTest.java b/services/robotests/backup/src/com/android/server/backup/keyvalue/KeyValueBackupTaskTest.java
index 6af726910226..1abcf38baff9 100644
--- a/services/robotests/backup/src/com/android/server/backup/keyvalue/KeyValueBackupTaskTest.java
+++ b/services/robotests/backup/src/com/android/server/backup/keyvalue/KeyValueBackupTaskTest.java
@@ -128,6 +128,7 @@ import com.android.server.testing.shadows.ShadowBackupDataInput;
 import com.android.server.testing.shadows.ShadowBackupDataOutput;
 import com.android.server.testing.shadows.ShadowEventLog;
 import com.android.server.testing.shadows.ShadowSystemServiceRegistry;
+import com.android.server.testing.shadows.ShadowUserManager;
 
 import com.google.common.base.Charsets;
 import com.google.common.truth.IterableSubject;
@@ -175,7 +176,8 @@ import java.util.stream.Stream;
             ShadowBackupDataOutput.class,
             ShadowEventLog.class,
             ShadowQueuedWork.class,
-            ShadowSystemServiceRegistry.class
+            ShadowSystemServiceRegistry.class,
+            ShadowUserManager.class
         })
 @Presubmit
 public class KeyValueBackupTaskTest  {
diff --git a/services/robotests/src/com/android/server/testing/shadows/ShadowUserManager.java b/services/robotests/src/com/android/server/testing/shadows/ShadowUserManager.java
index a9e4ee521f90..16ba21067a62 100644
--- a/services/robotests/src/com/android/server/testing/shadows/ShadowUserManager.java
+++ b/services/robotests/src/com/android/server/testing/shadows/ShadowUserManager.java
@@ -18,6 +18,7 @@ package com.android.server.testing.shadows;
 
 import android.annotation.NonNull;
 import android.annotation.UserIdInt;
+import android.os.UserHandle;
 import android.os.UserManager;
 
 import org.robolectric.annotation.Implementation;
@@ -50,6 +51,12 @@ public class ShadowUserManager extends org.robolectric.shadows.ShadowUserManager
         return profileIds.get(userId).stream().mapToInt(Number::intValue).toArray();
     }
 
+    /** @see UserManager#getMainUser() */
+    @Implementation
+    public UserHandle getMainUser() {
+        return null;
+    }
+
     /** Add a collection of profile IDs, all within the same profile group. */
     public void addProfileIds(@UserIdInt int... userIds) {
         final Set<Integer> profileGroup = new HashSet<>();