Merge bitcoin#9: [tests] Fix BOOST_CHECK_THROW macro

ec849d9 [tests] Fix BOOST_CHECK_THROW macro (John Newbery)

Pull request description:

  BOOST_CHECK_THROW doesn't correctly fail the test if no
  exception is throw. Fix that (and add an assert message).

  Bug and fix found by MarcoFalke.

  @MarcoFalke

Tree-SHA512: 6920a5091cb432d6914b4f961ab398dfdbd5ae3f46831d164b2d3d65786c450b284ca0c3cd433a5402020d25191b00aaa76f302e3164b62092a75fbb1e8fee83

test/object.cpp

@@ -19,9 +19,10 @@
 #define BOOST_CHECK_THROW(stmt, excMatch) { \
         try { \
             (stmt); \
+            assert(0 && "No exception caught"); \
         } catch (excMatch & e) { \
 	} catch (...) { \
-	    assert(0); \
+	    assert(0 && "Wrong exception caught"); \
 	} \
     }
 #define BOOST_CHECK_NO_THROW(stmt) { \