[ArduinoJson] Update external library ArduinoJson.

Is needed to compile new ESP32 code.

lib/ArduinoJson/test/StaticJsonBuffer/createArray.cpp

@@ -0,0 +1,45 @@
+// ArduinoJson - arduinojson.org
+// Copyright Benoit Blanchon 2014-2018
+// MIT License
+
+#include <ArduinoJson.h>
+#include <catch.hpp>
+
+TEST_CASE("StaticJsonBuffer::createArray()") {
+  SECTION("GrowsWithArray") {
+    StaticJsonBuffer<JSON_ARRAY_SIZE(2)> json;
+
+    JsonArray &array = json.createArray();
+    REQUIRE(JSON_ARRAY_SIZE(0) == json.size());
+
+    array.add("hello");
+    REQUIRE(JSON_ARRAY_SIZE(1) == json.size());
+
+    array.add("world");
+    REQUIRE(JSON_ARRAY_SIZE(2) == json.size());
+  }
+
+  SECTION("SucceedWhenBigEnough") {
+    StaticJsonBuffer<JSON_ARRAY_SIZE(0)> json;
+
+    JsonArray &array = json.createArray();
+    REQUIRE(array.success());
+  }
+
+  SECTION("FailsWhenTooSmall") {
+    StaticJsonBuffer<JSON_ARRAY_SIZE(0) - 1> json;
+
+    JsonArray &array = json.createArray();
+    REQUIRE_FALSE(array.success());
+  }
+
+  SECTION("ArrayDoesntGrowWhenFull") {
+    StaticJsonBuffer<JSON_ARRAY_SIZE(1)> json;
+
+    JsonArray &array = json.createArray();
+    array.add("hello");
+    array.add("world");
+
+    REQUIRE(1 == array.size());
+  }
+}