Add correct libraries

Arduino IDE: Place libraries in portable/sketchbook/libraries folder.
PlatformIO: Place libraries in your projects lib folder.

lib/ArduinoJson/test/JsonArray_Remove_Tests.cpp

@@ -0,0 +1,47 @@
+// Copyright Benoit Blanchon 2014-2017
+// MIT License
+//
+// Arduino JSON library
+// https://github.com/bblanchon/ArduinoJson
+// If you like this project, please add a star!
+
+#include <ArduinoJson.h>
+#include <gtest/gtest.h>
+
+class JsonArray_Remove_Tests : public ::testing::Test {
+ protected:
+  JsonArray_Remove_Tests() : _array(_jsonBuffer.createArray()) {
+    _array.add("one");
+    _array.add("two");
+    _array.add("three");
+  }
+
+  DynamicJsonBuffer _jsonBuffer;
+  JsonArray& _array;
+};
+
+#define TEST_(name) TEST_F(JsonArray_Remove_Tests, name)
+
+TEST_(RemoveFirstElement) {
+  _array.removeAt(0);
+
+  EXPECT_EQ(2, _array.size());
+  EXPECT_STREQ("two", _array[0]);
+  EXPECT_STREQ("three", _array[1]);
+}
+
+TEST_(RemoveMiddleElement) {
+  _array.removeAt(1);
+
+  EXPECT_EQ(2, _array.size());
+  EXPECT_STREQ("one", _array[0]);
+  EXPECT_STREQ("three", _array[1]);
+}
+
+TEST_(RemoveLastElement) {
+  _array.removeAt(2);
+
+  EXPECT_EQ(2, _array.size());
+  EXPECT_STREQ("one", _array[0]);
+  EXPECT_STREQ("two", _array[1]);
+}