now no longer a submodule. lib/ArduinoJson upstream version v5.6.4

lib/ArduinoJson/test/JsonArray_Invalid_Tests.cpp

@@ -0,0 +1,33 @@
+// Copyright Benoit Blanchon 2014-2016
+// MIT License
+//
+// Arduino JSON library
+// https://github.com/bblanchon/ArduinoJson
+// If you like this project, please add a star!
+
+#include <gtest/gtest.h>
+#include <ArduinoJson.h>
+
+TEST(JsonArray_Invalid_Tests, SubscriptFails) {
+  ASSERT_FALSE(JsonArray::invalid()[0].success());
+}
+
+TEST(JsonArray_Invalid_Tests, AddFails) {
+  JsonArray& array = JsonArray::invalid();
+  array.add(1);
+  ASSERT_EQ(0, array.size());
+}
+
+TEST(JsonArray_Invalid_Tests, CreateNestedArrayFails) {
+  ASSERT_FALSE(JsonArray::invalid().createNestedArray().success());
+}
+
+TEST(JsonArray_Invalid_Tests, CreateNestedObjectFails) {
+  ASSERT_FALSE(JsonArray::invalid().createNestedObject().success());
+}
+
+TEST(JsonArray_Invalid_Tests, PrintToWritesBrackets) {
+  char buffer[32];
+  JsonArray::invalid().printTo(buffer, sizeof(buffer));
+  ASSERT_STREQ("[]", buffer);
+}