use local library source instead to correct some black-box issue for aliyuniot

lib/ArduinoJson/extras/tests/JsonArray/isNull.cpp

@@ -0,0 +1,58 @@
+// ArduinoJson - arduinojson.org
+// Copyright Benoit Blanchon 2014-2020
+// MIT License
+
+#include <ArduinoJson.h>
+#include <catch.hpp>
+
+TEST_CASE("JsonArray::isNull()") {
+  SECTION("returns true") {
+    JsonArray arr;
+    REQUIRE(arr.isNull() == true);
+  }
+
+  SECTION("returns false") {
+    DynamicJsonDocument doc(4096);
+    JsonArray arr = doc.to<JsonArray>();
+    REQUIRE(arr.isNull() == false);
+  }
+}
+
+TEST_CASE("JsonArrayConst::isNull()") {
+  SECTION("returns true") {
+    JsonArrayConst arr;
+    REQUIRE(arr.isNull() == true);
+  }
+
+  SECTION("returns false") {
+    DynamicJsonDocument doc(4096);
+    JsonArrayConst arr = doc.to<JsonArray>();
+    REQUIRE(arr.isNull() == false);
+  }
+}
+
+TEST_CASE("JsonArray::operator bool()") {
+  SECTION("returns false") {
+    JsonArray arr;
+    REQUIRE(static_cast<bool>(arr) == false);
+  }
+
+  SECTION("returns true") {
+    DynamicJsonDocument doc(4096);
+    JsonArray arr = doc.to<JsonArray>();
+    REQUIRE(static_cast<bool>(arr) == true);
+  }
+}
+
+TEST_CASE("JsonArrayConst::operator bool()") {
+  SECTION("returns false") {
+    JsonArrayConst arr;
+    REQUIRE(static_cast<bool>(arr) == false);
+  }
+
+  SECTION("returns true") {
+    DynamicJsonDocument doc(4096);
+    JsonArrayConst arr = doc.to<JsonArray>();
+    REQUIRE(static_cast<bool>(arr) == true);
+  }
+}