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lib_standalone/ArduinoJson/extras/tests/JsonVariant/clear.cpp

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+// ArduinoJson - arduinojson.org
+// Copyright Benoit Blanchon 2014-2020
+// MIT License
+
+#include <ArduinoJson.h>
+#include <stdint.h>
+#include <catch.hpp>
+
+TEST_CASE("JsonVariant::clear()") {
+  DynamicJsonDocument doc(4096);
+  JsonVariant var = doc.to<JsonVariant>();
+
+  SECTION("size goes back to zero") {
+    var.add(42);
+    var.clear();
+
+    REQUIRE(var.size() == 0);
+  }
+
+  SECTION("isNull() return true") {
+    var.add("hello");
+    var.clear();
+
+    REQUIRE(var.isNull() == true);
+  }
+}