Add more tests for JsonObjectConst

extras/tests/JsonObjectConst/nesting.cpp

@@ -0,0 +1,35 @@
+// ArduinoJson - https://arduinojson.org
+// Copyright © 2014-2024, Benoit BLANCHON
+// MIT License
+
+#include <ArduinoJson.h>
+#include <catch.hpp>
+
+TEST_CASE("JsonObjectConst::nesting()") {
+  JsonDocument doc;
+  JsonObjectConst obj = doc.to<JsonObject>();
+
+  SECTION("return 0 if unbound") {
+    JsonObjectConst unbound;
+    REQUIRE(unbound.nesting() == 0);
+  }
+
+  SECTION("returns 1 for empty object") {
+    REQUIRE(obj.nesting() == 1);
+  }
+
+  SECTION("returns 1 for flat object") {
+    doc["hello"] = "world";
+    REQUIRE(obj.nesting() == 1);
+  }
+
+  SECTION("returns 2 with nested array") {
+    doc["nested"].to<JsonArray>();
+    REQUIRE(obj.nesting() == 2);
+  }
+
+  SECTION("returns 2 with nested object") {
+    doc["nested"].to<JsonObject>();
+    REQUIRE(obj.nesting() == 2);
+  }
+}