| /* |
| * Copyright (C) 2008 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package android.app.activity; |
| |
| import android.app.AlarmManager; |
| import android.content.Context; |
| import android.test.AndroidTestCase; |
| |
| import androidx.test.filters.LargeTest; |
| |
| import java.util.TimeZone; |
| |
| public class SetTimeZonePermissionsTest extends AndroidTestCase { |
| |
| private String[] mZones; |
| private String mCurrentZone; |
| private AlarmManager mAlarm; |
| |
| @Override |
| protected void setUp() throws Exception { |
| super.setUp(); |
| |
| mZones = TimeZone.getAvailableIDs(); |
| mCurrentZone = TimeZone.getDefault().getID(); |
| mAlarm = (AlarmManager) mContext.getSystemService(Context.ALARM_SERVICE); |
| } |
| |
| /** |
| * Verify that non-system processes cannot set the time zone. |
| */ |
| @LargeTest |
| public void testSetTimeZonePermissions() { |
| /** |
| * Attempt to set several predefined time zones, verifying that the system |
| * system default time zone has not actually changed from its prior state |
| * after each attempt. |
| */ |
| int max = (mZones.length > 10) ? mZones.length : 10; |
| assertTrue("No system-defined time zones - test invalid", max > 0); |
| |
| for (int i = 0; i < max; i++) { |
| String tz = mZones[i]; |
| try { |
| mAlarm.setTimeZone(tz); |
| } catch (SecurityException se) { |
| // Expected failure; no need to handle specially since we're |
| // about to assert that the test invariant holds: no change |
| // to the system time zone. |
| } |
| |
| String newZone = TimeZone.getDefault().getID(); |
| assertEquals("AlarmManager.setTimeZone() succeeded despite lack of permission", |
| mCurrentZone, |
| newZone); |
| } |
| } |
| } |