Issue #1652, #3456 - Replace 's_asyncWebBrowser2' with thread-safe facilities

test/plugin/InstancesTest.cpp

Index: test/plugin/InstancesTest.cpp
===================================================================
--- a/test/plugin/InstancesTest.cpp
+++ b/test/plugin/InstancesTest.cpp
@@ -14,6 +14,7 @@
  * You should have received a copy of the GNU General Public License
  * along with Adblock Plus.  If not, see <http://www.gnu.org/licenses/>.
  */
+
 #include <gtest/gtest.h>
 #include "../../src/plugin/Instances.h"
 
@@ -67,3 +68,57 @@
   ASSERT_FALSE(s.RemoveIfPresent(3));
 }
 
+typedef SyncSet<int, 0> SyncSetOne;
+bool IsFive(int x)
+{
+  return x == 5;
+}
+
+TEST(SyncSet, Instantiate)
+{
+  SyncSetOne s;
+}
+
+TEST(SyncSet, OrdinaryInserted)
+{
+  SyncSetOne s;
+  ASSERT_TRUE(s.InsertIfAbsent(5));
+  EXPECT_EQ(5, s.LinearSearch(IsFive));
+  ASSERT_TRUE(s.EraseWithCheck(5));
+  EXPECT_EQ(0, s.LinearSearch(IsFive));
+}
+
+TEST(SyncSet, OrdinaryNotInserted1)
+{
+  SyncSetOne s;
+  ASSERT_EQ(0, s.LinearSearch(IsFive));
+}
+
+TEST(SyncSet, OrdinaryNotInserted2)
+{
+  SyncSetOne s;
+  ASSERT_TRUE(s.InsertIfAbsent(1));
+  ASSERT_TRUE(s.InsertIfAbsent(2));
+  ASSERT_EQ(0, s.LinearSearch(IsFive));
+}
+
+TEST(SyncSet, WrongAddedTwice)
+{
+  SyncSetOne s;
+  ASSERT_TRUE(s.InsertIfAbsent(3));
+  ASSERT_FALSE(s.InsertIfAbsent(3));
+}
+
+TEST(SyncSet, AcceptableAddRemoveAddAgain)
+{
+  SyncSetOne s;
+  ASSERT_TRUE(s.InsertIfAbsent(5));
+  ASSERT_TRUE(s.EraseWithCheck(5));
+  ASSERT_TRUE(s.InsertIfAbsent(5));
+}
+
+TEST(SyncSet, WrongEraseWithoutInsert)
+{
+  SyncSetOne s;
+  ASSERT_FALSE(s.EraseWithCheck(3));
+}