1 files changed, 12 insertions, 0 deletions
diff --git a/test/unit/util/integer_black.h b/test/unit/util/integer_black.h
index f4bd1f8b8..66e29a01b 100644
--- a/test/unit/util/integer_black.h
+++ b/test/unit/util/integer_black.h
@@ -18,6 +18,7 @@
 
 #include <cxxtest/TestSuite.h>
 #include <sstream>
+#include <limits>
 
 #include "util/integer.h"
 
@@ -295,6 +296,17 @@ public:
     TS_ASSERT_EQUALS( Integer(-1000), Integer(-10).pow(3) );
   }
 
+  void testOverlyLong() {
+    unsigned long ul = numeric_limits<unsigned long>::max();
+    Integer i(ul);
+    TS_ASSERT(i.getUnsignedLong() == ul);
+    TS_ASSERT_THROWS_ANYTHING(i.getLong());
+    unsigned long ulplus1 = ul + 1;
+    TS_ASSERT(ulplus1 == 0);
+    i = i + 1;
+    TS_ASSERT_THROWS_ANYTHING(i.getUnsignedLong());
+  }
+
   void testTestBit() {
     TS_ASSERT( ! Integer(0).testBit(6) );
     TS_ASSERT( ! Integer(0).testBit(5) );