Test object allocation with DynamicJsonBuffer

test/DynamicJsonBuffer_Object_Tests.cpp

@@ -0,0 +1,24 @@
+// Copyright Benoit Blanchon 2014
+// MIT License
+//
+// Arduino JSON library
+// https://github.com/bblanchon/ArduinoJson
+
+#include <gtest/gtest.h>
+#include <ArduinoJson.h>
+
+TEST(DynamicJsonBuffer_Object_Tests, GrowsWithObject) {
+  DynamicJsonBuffer json;
+
+  JsonObject &obj = json.createObject();
+  ASSERT_EQ(JSON_OBJECT_SIZE(0), json.size());
+
+  obj["hello"];
+  ASSERT_EQ(JSON_OBJECT_SIZE(1), json.size());
+
+  obj["world"];
+  ASSERT_EQ(JSON_OBJECT_SIZE(2), json.size());
+
+  obj["world"];  // <- same value, should not grow
+  ASSERT_EQ(JSON_OBJECT_SIZE(2), json.size());
+}