Issue 4231 - Fix unstable FilterEngineTest.testSetRemoveFilterChangeCallback

libadblockplus-android-tests/src/org/adblockplus/libadblockplus/tests/FilterEngineTest.java

 /*
  * This file is part of Adblock Plus <https://adblockplus.org/>,
  * Copyright (C) 2006-2017 eyeo GmbH
  *
  * Adblock Plus is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 3 as
  * published by the Free Software Foundation.
  *
  * Adblock Plus is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * along with Adblock Plus.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 package org.adblockplus.libadblockplus.tests;
 
+import android.os.SystemClock;
 import android.util.Log;
 import org.adblockplus.libadblockplus.Filter;
 import org.adblockplus.libadblockplus.FilterEngine;
 import org.adblockplus.libadblockplus.MockFilterChangeCallback;
 import org.adblockplus.libadblockplus.Subscription;
 
 import org.junit.Test;
 
 public class FilterEngineTest extends FilterEngineGenericTest
 {
@@ skipping 294 matching lines @@
 
   @Test
   public void testFirstRunFlag()
   {
     assertFalse(filterEngine.isFirstRun());
   }
 
   @Test
   public void testSetRemoveFilterChangeCallback()
   {
+    // avoid callback with action "load"
+    while (filterEngine.getListedFilters().size() > 0)
+    {
+      filterEngine.getListedFilters().get(0).removeFromList();
+    }
+
     MockFilterChangeCallback mockFilterChangeCallback = new MockFilterChangeCallback(0);
 
     filterEngine.setFilterChangeCallback(mockFilterChangeCallback);
     filterEngine.getFilter("foo").addToList();
     assertEquals(1, mockFilterChangeCallback.getTimesCalled());
 
     filterEngine.removeFilterChangeCallback();
     filterEngine.getFilter("foo").removeFromList();
     assertEquals(1, mockFilterChangeCallback.getTimesCalled());
   }
@@ skipping 35 matching lines @@
     assertFalse(filterEngine.isElemhideWhitelisted("http://example.com", emptyArray));
 
     String[] documentUrls1 = new String[]
       {
         "http://example.de"
       };
     assertTrue(filterEngine.isElemhideWhitelisted("http://example.com", documentUrls1));
     assertFalse(filterEngine.isElemhideWhitelisted("http://example.co.uk", documentUrls1));
   }
 }