initial commit

libraries/ArduinoJson/extras/tests/JsonVariantConst/as.cpp

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+// ArduinoJson - https://arduinojson.org
+// Copyright © 2014-2025, Benoit BLANCHON
+// MIT License
+
+#include <ArduinoJson.h>
+#include <stdint.h>
+#include <catch.hpp>
+
+#include "Literals.hpp"
+
+TEST_CASE("JsonVariantConst::as<T>()") {
+  JsonDocument doc;
+  JsonVariantConst var = doc.to<JsonVariant>();
+
+  doc.set("hello");
+
+  REQUIRE(var.as<bool>() == true);
+  REQUIRE(var.as<long>() == 0L);
+  REQUIRE(var.as<const char*>() == "hello"_s);
+  REQUIRE(var.as<std::string>() == "hello"_s);
+}
+
+TEST_CASE("Invalid conversions") {
+  using namespace ArduinoJson::detail;
+
+  JsonVariantConst variant;
+
+  CHECK(is_same<decltype(variant.as<int>()), int>::value);
+  CHECK(is_same<decltype(variant.as<float>()), float>::value);
+  CHECK(is_same<decltype(variant.as<JsonVariantConst>()),
+                JsonVariantConst>::value);
+  CHECK(
+      is_same<decltype(variant.as<JsonObjectConst>()), JsonObjectConst>::value);
+  CHECK(is_same<decltype(variant.as<JsonArrayConst>()), JsonArrayConst>::value);
+
+  CHECK(is_same<decltype(variant.as<JsonVariant>()),
+                InvalidConversion<JsonVariantConst, JsonVariant>>::value);
+  CHECK(is_same<decltype(variant.as<JsonObject>()),
+                InvalidConversion<JsonVariantConst, JsonObject>>::value);
+  CHECK(is_same<decltype(variant.as<JsonArray>()),
+                InvalidConversion<JsonVariantConst, JsonArray>>::value);
+}