Added support for non zero-terminated strings (fixes #704)

test/MsgPack/std_string.cpp

@@ -0,0 +1,44 @@
+// ArduinoJson - arduinojson.org
+// Copyright Benoit Blanchon 2014-2018
+// MIT License
+
+#include <ArduinoJson.h>
+#include <catch.hpp>
+
+TEST_CASE("deserializeMsgPack(const std::string&)") {
+  DynamicJsonDocument doc;
+
+  SECTION("should accept const string") {
+    const std::string input("\x92\x01\x02");
+
+    MsgPackError err = deserializeMsgPack(doc, input);
+
+    REQUIRE(err == MsgPackError::Ok);
+  }
+
+  SECTION("should accept temporary string") {
+    MsgPackError err = deserializeMsgPack(doc, std::string("\x92\x01\x02"));
+
+    REQUIRE(err == MsgPackError::Ok);
+  }
+
+  SECTION("should duplicate content") {
+    std::string input("\x91\xA5hello");
+
+    MsgPackError err = deserializeMsgPack(doc, input);
+    input[2] = 'X';  // alter the string tomake sure we made a copy
+
+    JsonArray& array = doc.as<JsonArray>();
+    REQUIRE(err == MsgPackError::Ok);
+    REQUIRE(std::string("hello") == array[0]);
+  }
+
+  SECTION("should accept a zero in input") {
+    MsgPackError err = deserializeMsgPack(doc, std::string("\x92\x00\x02", 3));
+
+    REQUIRE(err == MsgPackError::Ok);
+    JsonArray& arr = doc.as<JsonArray>();
+    REQUIRE(arr[0] == 0);
+    REQUIRE(arr[1] == 2);
+  }
+}