Added simple critical section test cases.

src/test/util_tests.cpp

@@ -8,6 +8,25 @@ using namespace std;
 
 BOOST_AUTO_TEST_SUITE(util_tests)
 
+BOOST_AUTO_TEST_CASE(util_criticalsection)
+{
+    CCriticalSection cs;
+
+    do {
+        CRITICAL_BLOCK(cs)
+            break;
+
+        BOOST_ERROR("break was swallowed!");
+    } while(0);
+
+    do {
+        TRY_CRITICAL_BLOCK(cs)
+            break;
+
+        BOOST_ERROR("break was swallowed!");
+    } while(0);
+}
+
 BOOST_AUTO_TEST_CASE(util_MedianFilter)
 {    
     CMedianFilter<int> filter(5, 15);