test(dobj_sandbox): added some sandbox code for testing dobj

tests/dobj_sandbox/testDObject.cpp

@@ -0,0 +1,31 @@
+#include<iostream>
+
+#include "DObject.h"
+
+DObject testFunction(DObject &obj);
+
+int main(){
+    float data = 55.86868;
+    DObject obj;
+    obj.setData(data);
+    float newData;
+    newData = std::get<float>(obj.getData());
+    std::cout << "Data: " << newData << std::endl;
+    std::cout << "Calling test function" << std::endl;
+    DObject newObj = testFunction(obj);
+    std::cout << newObj << std::endl;
+    return 0;
+}
+
+// Test function which takes a DObject as an argument and 
+// returns new DObject with an vector of 10 elements identical to the input DObject
+// This should use std::varient and auto to do some degree of type inference
+DObject testFunction(DObject &obj){
+    float data = obj.getDataAs<float>();
+    std::cout << "Data: " << data << std::endl;
+    std::vector<std::vector<float>> newData(3, std::vector<float>(3, data));
+    DObject newObj(newData);
+    std::cout << obj << std::endl;
+
+    return newObj;
+}