Added ARDUINOJSON_ENABLE_COMMENTS to enable support for comments

extras/tests/MixedConfiguration/enable_comments_0.cpp

@@ -0,0 +1,54 @@
+// ArduinoJson - arduinojson.org
+// Copyright Benoit Blanchon 2014-2020
+// MIT License
+
+#define ARDUINOJSON_ENABLE_COMMENTS 0
+#include <ArduinoJson.h>
+
+#include <catch.hpp>
+
+TEST_CASE("Comments should produce InvalidInput") {
+  DynamicJsonDocument doc(2048);
+
+  const char* testCases[] = {
+      "/*COMMENT*/  [\"hello\"]",
+      "[/*COMMENT*/ \"hello\"]",
+      "[\"hello\"/*COMMENT*/]",
+      "[\"hello\"/*COMMENT*/,\"world\"]",
+      "[\"hello\",/*COMMENT*/ \"world\"]",
+      "[/*/\n]",
+      "[/*COMMENT]",
+      "[/*COMMENT*]",
+      "//COMMENT\n\t[\"hello\"]",
+      "[//COMMENT\n\"hello\"]",
+      "[\"hello\"//COMMENT\r\n]",
+      "[\"hello\"//COMMENT\n,\"world\"]",
+      "[\"hello\",//COMMENT\n\"world\"]",
+      "[/COMMENT\n]",
+      "[//COMMENT",
+      "/*COMMENT*/ {\"hello\":\"world\"}",
+      "{/*COMMENT*/\"hello\":\"world\"}",
+      "{\"hello\"/*COMMENT*/:\"world\"}",
+      "{\"hello\":/*COMMENT*/\"world\"}",
+      "{\"hello\":\"world\"/*COMMENT*/}",
+      "//COMMENT\n {\"hello\":\"world\"}",
+      "{//COMMENT\n\"hello\":\"world\"}",
+      "{\"hello\"//COMMENT\n:\"world\"}",
+      "{\"hello\"://COMMENT\n\"world\"}",
+      "{\"hello\":\"world\"//COMMENT\n}",
+      "/{\"hello\":\"world\"}",
+      "{/\"hello\":\"world\"}",
+      "{\"hello\"/:\"world\"}",
+      "{\"hello\":/\"world\"}",
+      "{\"hello\":\"world\"/}",
+      "{\"hello\":\"world\"/,\"answer\":42}",
+      "{\"hello\":\"world\",/\"answer\":42}",
+  };
+  const size_t testCount = sizeof(testCases) / sizeof(testCases[0]);
+
+  for (size_t i = 0; i < testCount; i++) {
+    const char* input = testCases[i];
+    CAPTURE(input);
+    REQUIRE(deserializeJson(doc, input) == DeserializationError::InvalidInput);
+  }
+}