Program: 191773
Project: 191773
Buggy source:
@Override protected void setUp() throws Exception {
  super.setUp();
  mServiceContext=spy(new ServiceContext());
  mClientContext=new ClientContext();
  mMockPackageManager=mock(PackageManager.class);
  mMockPackageManagerInternal=mock(PackageManagerInternal.class);
  mMockUserManager=mock(UserManager.class);
  mInjectedCurrentTimeLillis=START_TIME;
  mInjectedPackages=new HashMap<>();
  ;
  addPackage(CALLING_PACKAGE_1,CALLING_UID_1,1);
  addPackage(CALLING_PACKAGE_2,CALLING_UID_2,2);
  addPackage(CALLING_PACKAGE_3,CALLING_UID_3,3);
  addPackage(CALLING_PACKAGE_4,CALLING_UID_4,10);
  addPackage(LAUNCHER_1,LAUNCHER_UID_1,4);
  addPackage(LAUNCHER_2,LAUNCHER_UID_2,5);
  addPackage(LAUNCHER_3,LAUNCHER_UID_3,6);
  addPackage(LAUNCHER_4,LAUNCHER_UID_4,10);
  updatePackageInfo(CALLING_PACKAGE_3,pi -> pi.applicationInfo.flags&=~ApplicationInfo.FLAG_ALLOW_BACKUP);
  updatePackageInfo(LAUNCHER_3,pi -> pi.applicationInfo.flags&=~ApplicationInfo.FLAG_ALLOW_BACKUP);
  mUninstalledPackages=new HashSet<>();
  mInjectedFilePathRoot=new File(getTestContext().getCacheDir(),"String_Node_Str");
  deleteAllSavedFiles();
  doAnswer(inv -> {
    assertSystem();
    return USER_INFO_0;
  }
).when(mMockUserManager).getUserInfo(eq(USER_0));
  doAnswer(inv -> {
    assertSystem();
    return USER_INFO_10;
  }
).when(mMockUserManager).getUserInfo(eq(USER_10));
  doAnswer(inv -> {
    assertSystem();
    return USER_INFO_11;
  }
).when(mMockUserManager).getUserInfo(eq(USER_11));
  doAnswer(inv -> {
    assertSystem();
    return USER_INFO_P0;
  }
).when(mMockUserManager).getUserInfo(eq(USER_P0));
  when(mMockUserManager.isUserRunning(eq(USER_0))).thenReturn(true);
  initService();
  setCaller(CALLING_PACKAGE_1);
  mInternal.onSystemLocaleChangedNoLock();
}

Fixed version (ground truth):
@Override protected void setUp() throws Exception {
  super.setUp();
  mServiceContext=spy(new ServiceContext());
  mClientContext=new ClientContext();
  mMockPackageManager=mock(PackageManager.class);
  mMockPackageManagerInternal=mock(PackageManagerInternal.class);
  mMockUserManager=mock(UserManager.class);
  mInjectedCurrentTimeLillis=START_TIME;
  mInjectedPackages=new HashMap<>();
  ;
  addPackage(CALLING_PACKAGE_1,CALLING_UID_1,1);
  addPackage(CALLING_PACKAGE_2,CALLING_UID_2,2);
  addPackage(CALLING_PACKAGE_3,CALLING_UID_3,3);
  addPackage(CALLING_PACKAGE_4,CALLING_UID_4,10);
  addPackage(LAUNCHER_1,LAUNCHER_UID_1,4);
  addPackage(LAUNCHER_2,LAUNCHER_UID_2,5);
  addPackage(LAUNCHER_3,LAUNCHER_UID_3,6);
  addPackage(LAUNCHER_4,LAUNCHER_UID_4,10);
  updatePackageInfo(CALLING_PACKAGE_3,pi -> pi.applicationInfo.flags&=~ApplicationInfo.FLAG_ALLOW_BACKUP);
  updatePackageInfo(LAUNCHER_3,pi -> pi.applicationInfo.flags&=~ApplicationInfo.FLAG_ALLOW_BACKUP);
  mUninstalledPackages=new HashSet<>();
  mInjectedFilePathRoot=new File(getTestContext().getCacheDir(),"String_Node_Str");
  deleteAllSavedFiles();
  doAnswer(inv -> {
    assertSystem();
    return USER_INFO_0;
  }
).when(mMockUserManager).getUserInfo(eq(USER_0));
  doAnswer(inv -> {
    assertSystem();
    return USER_INFO_10;
  }
).when(mMockUserManager).getUserInfo(eq(USER_10));
  doAnswer(inv -> {
    assertSystem();
    return USER_INFO_11;
  }
).when(mMockUserManager).getUserInfo(eq(USER_11));
  doAnswer(inv -> {
    assertSystem();
    return USER_INFO_P0;
  }
).when(mMockUserManager).getUserInfo(eq(USER_P0));
  when(mMockUserManager.isUserRunning(eq(USER_0))).thenAnswer(new AnswerIsUserRunning(true));
  initService();
  setCaller(CALLING_PACKAGE_1);
  mInternal.onSystemLocaleChangedNoLock();
}