add arduino json lib

#182

lib/ArduinoJson/test/DynamicJsonBuffer/no_memory.cpp

@@ -0,0 +1,49 @@
+// ArduinoJson - arduinojson.org
+// Copyright Benoit Blanchon 2014-2018
+// MIT License
+
+#include <ArduinoJson.h>
+#include <catch.hpp>
+
+using namespace ArduinoJson::Internals;
+
+struct NoMemoryAllocator {
+  void* allocate(size_t) {
+    return NULL;
+  }
+  void deallocate(void*) {}
+};
+
+TEST_CASE("DynamicJsonBuffer no memory") {
+  DynamicJsonBufferBase<NoMemoryAllocator> _jsonBuffer;
+
+  SECTION("FixCodeCoverage") {
+    // call this function to fix code coverage
+    NoMemoryAllocator().deallocate(NULL);
+  }
+
+  SECTION("createArray()") {
+    REQUIRE_FALSE(_jsonBuffer.createArray().success());
+  }
+
+  SECTION("createObject()") {
+    REQUIRE_FALSE(_jsonBuffer.createObject().success());
+  }
+
+  SECTION("parseArray()") {
+    char json[] = "[]";
+    REQUIRE_FALSE(_jsonBuffer.parseArray(json).success());
+  }
+
+  SECTION("parseObject()") {
+    char json[] = "{}";
+    REQUIRE_FALSE(_jsonBuffer.parseObject(json).success());
+  }
+
+  SECTION("startString()") {
+    DynamicJsonBufferBase<NoMemoryAllocator>::String str =
+        _jsonBuffer.startString();
+    str.append('!');
+    REQUIRE(0 == str.c_str());
+  }
+}