add arduino json lib

#182

lib/ArduinoJson/test/JsonObject/iterator.cpp

@@ -0,0 +1,51 @@
+// ArduinoJson - arduinojson.org
+// Copyright Benoit Blanchon 2014-2018
+// MIT License
+
+#include <ArduinoJson.h>
+#include <catch.hpp>
+
+using namespace Catch::Matchers;
+
+TEST_CASE("JsonObject::begin()/end()") {
+  StaticJsonBuffer<JSON_OBJECT_SIZE(2)> jb;
+  JsonObject& obj = jb.createObject();
+  obj["ab"] = 12;
+  obj["cd"] = 34;
+
+  SECTION("NonConstIterator") {
+    JsonObject::iterator it = obj.begin();
+    REQUIRE(obj.end() != it);
+    REQUIRE_THAT(it->key, Equals("ab"));
+    REQUIRE(12 == it->value);
+    it->key = "a.b";
+    it->value = 1.2;
+    ++it;
+    REQUIRE(obj.end() != it);
+    REQUIRE_THAT(it->key, Equals("cd"));
+    REQUIRE(34 == it->value);
+    it->key = "c.d";
+    it->value = 3.4;
+    ++it;
+    REQUIRE(obj.end() == it);
+
+    REQUIRE(2 == obj.size());
+    REQUIRE(1.2 == obj["a.b"]);
+    REQUIRE(3.4 == obj["c.d"]);
+  }
+
+  SECTION("ConstIterator") {
+    const JsonObject& const_object = obj;
+    JsonObject::const_iterator it = const_object.begin();
+
+    REQUIRE(const_object.end() != it);
+    REQUIRE_THAT(it->key, Equals("ab"));
+    REQUIRE(12 == it->value);
+    ++it;
+    REQUIRE(const_object.end() != it);
+    REQUIRE_THAT(it->key, Equals("cd"));
+    REQUIRE(34 == it->value);
+    ++it;
+    REQUIRE(const_object.end() == it);
+  }
+}