Complete the logic around last active user, including:

- Update CarSettings last active user when user switched.
- Boot into the last active user if valid, or boot into the smallest
user id.
- Not allow deleting the last admin user, so we have a user 10+ to boot
into.

Test: Unit test
Bug: 110156344,110425490,110425354
Change-Id: I3e85805bf469bd17709973936e8c3285c8f44207

1 files changed, 45 insertions, 1 deletions

diff --git a/tests/carservice_unit_test/src/com/android/car/user/CarUserServiceTest.java b/tests/carservice_unit_test/src/com/android/car/user/CarUserServiceTest.java
index 20cb060f28..a6b48bf8f1 100644
--- a/tests/carservice_unit_test/src/com/android/car/user/CarUserServiceTest.java
+++ b/tests/carservice_unit_test/src/com/android/car/user/CarUserServiceTest.java
@@ -84,9 +84,10 @@ public class CarUserServiceTest {
         mCarUserService.init();
         verify(mMockContext).registerReceiver(eq(mCarUserService), argument.capture());
         IntentFilter intentFilter = argument.getValue();
-        assertThat(intentFilter.countActions()).isEqualTo(1);
+        assertThat(intentFilter.countActions()).isEqualTo(2);
 
         assertThat(intentFilter.getAction(0)).isEqualTo(Intent.ACTION_LOCKED_BOOT_COMPLETED);
+        assertThat(intentFilter.getAction(1)).isEqualTo(Intent.ACTION_USER_SWITCHED);
     }
 
     /**
@@ -139,4 +140,47 @@ public class CarUserServiceTest {
         verify(mCarUserManagerHelper).
                 setUserRestriction(user0, UserManager.DISALLOW_MODIFY_ACCOUNTS, true);
     }
+
+    /**
+     * Test that the {@link CarUserService} starts up the last active user on reboot.
+     */
+    @Test
+    public void testStartsLastActiveUserOnReboot() {
+        List<UserInfo> users = new ArrayList<>();
+
+        int adminUserId = 10;
+        UserInfo admin = new UserInfo(adminUserId, CarUserService.OWNER_NAME, UserInfo.FLAG_ADMIN);
+
+        int secUserId = 11;
+        UserInfo secUser =
+                new UserInfo(secUserId, CarUserService.OWNER_NAME, UserInfo.FLAG_ADMIN);
+
+        users.add(admin);
+        users.add(secUser);
+
+        doReturn(users).when(mCarUserManagerHelper).getAllUsers();
+        doReturn(secUserId).when(mCarUserManagerHelper).getLastActiveUser();
+
+        mCarUserService.onReceive(mMockContext,
+                new Intent(Intent.ACTION_LOCKED_BOOT_COMPLETED));
+
+        verify(mCarUserManagerHelper).switchToUserId(secUserId);
+    }
+
+    /**
+     * Test that the {@link CarUserService} updates last active user on user switch intent.
+     */
+    @Test
+    public void testLastActiveUserUpdatedOnUserSwitch() {
+        int lastActiveUserId = 11;
+
+        doReturn(false).when(mCarUserManagerHelper).isForegroundUserGuest();
+        doReturn(lastActiveUserId).when(mCarUserManagerHelper).getCurrentForegroundUserId();
+
+        mCarUserService.onReceive(mMockContext,
+                new Intent(Intent.ACTION_USER_SWITCHED));
+
+        verify(mCarUserManagerHelper).setLastActiveUser(
+                lastActiveUserId, /* skipGlobalSetting= */ false);
+    }
 }