diff --git a/tests/pretty_printers.hpp b/tests/pretty_printers.hpp
index 42be33e..86bd20d 100644
--- a/tests/pretty_printers.hpp
+++ b/tests/pretty_printers.hpp
@@ -7,6 +7,7 @@
 
 #include <experimental/iterator>
 #include "parser.hpp"
+#include "utils.hpp"
 namespace std {
 std::ostream& operator<<(std::ostream& s, const Completions& completion)
 {
@@ -18,4 +19,21 @@
     s << "}" << std::endl;
     return s;
 }
+
+std::ostream& operator<<(std::ostream& s, const std::optional<std::string>& opt)
+{
+    s << (opt ? *opt : "std::nullopt");
+    return s;
+}
+
+std::ostream& operator<<(std::ostream& s, const DatastoreAccess::Tree& map)
+{
+    s << std::endl
+      << "{";
+    for (const auto& it : map) {
+        s << "{\"" << it.first << "\", " << leafDataToString(it.second) << "}" << std::endl;
+    }
+    s << "}" << std::endl;
+    return s;
+}
 }