Fix crash when running UserSwitcherControllerTest am: f69d25f7

package com.android.systemui.statusbar.policy

import android.app.IActivityTaskManager

import android.content.Context

import android.content.DialogInterface

import android.content.Intent

import android.content.pm.UserInfo

import android.graphics.Bitmap

import android.hardware.face.FaceManager

import android.hardware.fingerprint.FingerprintManager

import android.os.Handler

import android.os.UserHandle

import android.os.UserManager

import org.mockito.Mock

import org.mockito.Mockito.any

import org.mockito.Mockito.anyString

import org.mockito.Mockito.mock

import org.mockito.Mockito.`when`

import org.mockito.MockitoAnnotations

        context.orCreateTestableResources.addOverride(

                com.android.internal.R.bool.config_guestUserAutoCreated, false)

        context.addMockSystemService(Context.FACE_SERVICE, mock(FaceManager::class.java))

        context.addMockSystemService(Context.FINGERPRINT_SERVICE,

                mock(FingerprintManager::class.java))

        `when`(userManager.canAddMoreUsers()).thenReturn(true)

        userSwitcherController = UserSwitcherController(context,

        `when`(userManager.createGuest(any(), anyString())).thenReturn(guestInfo)

        userSwitcherController.onUserListItemClicked(emptyGuestUserRecord)

        testableLooper.processAllMessages()

        assertEquals(1, uiEventLogger.numLogs())

        assertEquals(QSUserSwitcherEvent.QS_USER_GUEST_ADD.id, uiEventLogger.eventId(0))

    }