Skip managed profile user test when the target is automotive

- In Auto, some targets don't support FEATURE_MANAGED_USERS.
- The others support the feature, but it is reserved for
passenger user. So, creating another managed profile user is not possible.
- So, it would be needed to skip tests which temporarily creates a
managed user in UserManagerTest.java.
- The correction condition to skip the tests in automotive is
1) not headless system user mode OR 2) not passenger enabled.
- Knowing whether passenger is enabled needs a dependency to car
service, which is not recommended. And, so far, all automotive targets
use headless system user. This CL checks 1) condition.

Bug: 148540026
Test: atest
FrameworksServicesTests: com.android.server.pm.UserManagerTest
Change-Id: I3fe028cc2d9b430546ed02c2fc2e50da870bef58

services/tests/servicestests/src/com/android/server/pm/UserManagerTest.java

@@ -802,6 +802,7 @@ public final class UserManagerTest {
 
     @Test
     public void testCreateProfile_withContextUserId() throws Exception {
+        assumeManagedUsersSupported();
         final int primaryUserId = mUserManager.getPrimaryUser().id;
 
         UserInfo userProfile = createProfileForUser("Managed 1",
@@ -820,6 +821,7 @@ public final class UserManagerTest {
 
     @Test
     public void testSetUserName_withContextUserId() throws Exception {
+        assumeManagedUsersSupported();
         final int primaryUserId = mUserManager.getPrimaryUser().id;
 
         UserInfo userInfo1 = createProfileForUser("Managed 1",
@@ -855,6 +857,7 @@ public final class UserManagerTest {
 
     @Test
     public void testGetUserIcon_withContextUserId() throws Exception {
+        assumeManagedUsersSupported();
         final int primaryUserId = mUserManager.getPrimaryUser().id;
 
         UserInfo userInfo1 = createProfileForUser("Managed 1",
@@ -975,8 +978,11 @@ public final class UserManagerTest {
     }
 
     private void assumeManagedUsersSupported() {
+        // In Automotive, if headless system user is enabled, a managed user cannot be created
+        // under a primary user.
         assumeTrue("device doesn't support managed users",
-                mPackageManager.hasSystemFeature(PackageManager.FEATURE_MANAGED_USERS));
+                mPackageManager.hasSystemFeature(PackageManager.FEATURE_MANAGED_USERS)
+                && (!isAutomotive() || !UserManager.isHeadlessSystemUserMode()));
     }
 
     private boolean isAutomotive() {