Return a status enum from ScanForWalletTransactions

Return the failed block as an out var.

This clarifies the outcome as the prior return value could
be null due to user abort or failure.

1 files changed, 8 insertions, 0 deletions

diff --git a/src/test/test_bitcoin.h b/src/test/test_bitcoin.h
index 3872767133..182571b004 100644
--- a/src/test/test_bitcoin.h
+++ b/src/test/test_bitcoin.h
@@ -15,9 +15,17 @@
 #include <txmempool.h>
 
 #include <memory>
+#include <type_traits>
 
 #include <boost/thread.hpp>
 
+// Enable BOOST_CHECK_EQUAL for enum class types
+template <typename T>
+std::ostream& operator<<(typename std::enable_if<std::is_enum<T>::value, std::ostream>::type& stream, const T& e)
+{
+    return stream << static_cast<typename std::underlying_type<T>::type>(e);
+}
+
 extern uint256 insecure_rand_seed;
 extern FastRandomContext insecure_rand_ctx;