fix unit tests in Windows

Author: facontidavide

include/behaviortree_cpp/json_export.h

@@ -49,11 +49,7 @@ namespace BT
 class JsonExporter
 {
 public:
-  static JsonExporter& get()
-  {
-    static JsonExporter global_instance;
-    return global_instance;
-  }
+  static JsonExporter& get();
 
   /**
    * @brief toJson adds the content of "any" to the JSON "destination".

src/json_export.cpp

@@ -3,6 +3,12 @@
 namespace BT
 {
 
+JsonExporter &JsonExporter::get()
+{
+  static JsonExporter global_instance;
+  return global_instance;
+}
+
 bool JsonExporter::toJson(const Any& any, nlohmann::json& dst) const
 {
   nlohmann::json json;

tests/gtest_blackboard.cpp

@@ -531,10 +531,15 @@ TEST(BlackboardTest, BlackboardBackup)
   // Blackboard Backup
   const auto bb_backup = BlackboardBackup(tree);
 
-  std::vector<std::vector<StringView>> expected_keys;
+  std::vector<std::vector<std::string>> expected_keys;
   for(const auto& sub : tree.subtrees)
   {
-    expected_keys.push_back(sub->blackboard->getKeys());
+    std::vector<std::string> keys;
+    for(const auto& str_view : sub->blackboard->getKeys())
+    {
+      keys.push_back(std::string(str_view));
+    }
+    expected_keys.push_back(keys);
   }
 
   auto status = tree.tickWhileRunning();

tests/gtest_ports.cpp

@@ -510,7 +510,7 @@ class NodeWithDefaultPoints : public SyncActionNode
     }
     if(!getInput("pointE", pointE) || pointE != Point2D{ 9, 10 })
     {
-      throw std::runtime_error("failed pointD");
+      throw std::runtime_error("failed pointE");
     }
     if(!getInput("input", input) || input != Point2D{ -1, -2 })
     {