1 files changed, 22 insertions, 0 deletions
diff --git a/src/mbgl/storage/response.cpp b/src/mbgl/storage/response.cpp
index 09c43c8a6a..644d73d286 100644
--- a/src/mbgl/storage/response.cpp
+++ b/src/mbgl/storage/response.cpp
@@ -1,6 +1,9 @@
 #include <mbgl/storage/response.hpp>
 #include <mbgl/util/chrono.hpp>
 
+#include <iostream>
+#include <cassert>
+
 namespace mbgl {
 
 Response::Response(const Response& res) {
@@ -22,4 +25,23 @@ Response::Error::Error(Reason reason_, const std::string& message_)
     : reason(reason_), message(message_) {
 }
 
+std::ostream& operator<<(std::ostream& os, Response::Error::Reason r) {
+    switch (r) {
+    case Response::Error::Reason::Success:
+        return os << "Response::Error::Reason::NotFound";
+    case Response::Error::Reason::NotFound:
+        return os << "Response::Error::Reason::NotFound";
+    case Response::Error::Reason::Server:
+        return os << "Response::Error::Reason::Server";
+    case Response::Error::Reason::Connection:
+        return os << "Response::Error::Reason::Connection";
+    case Response::Error::Reason::Other:
+        return os << "Response::Error::Reason::Other";
+    }
+
+    // The above switch is exhaustive, but placate GCC nonetheless:
+    assert(false);
+    return os;
+}
+
 } // namespace mbgl