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Instead of storing a pointer, the function copies the `VariantData`. Benefits: * smaller code * no impact on programs that don't use this feature Drawbacks: * changes to the original variant are not always reflected on the copy * modifying the original from the shallow copy leads to UB
27 lines
505 B
C++
27 lines
505 B
C++
// ArduinoJson - https://arduinojson.org
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// Copyright © 2014-2022, Benoit BLANCHON
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// MIT License
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#include <ArduinoJson.h>
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#include <stdint.h>
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#include <catch.hpp>
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TEST_CASE("JsonVariant::clear()") {
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DynamicJsonDocument doc(4096);
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JsonVariant var = doc.to<JsonVariant>();
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SECTION("size goes back to zero") {
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var.add(42);
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var.clear();
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REQUIRE(var.size() == 0);
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}
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SECTION("isNull() return true") {
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var.add("hello");
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var.clear();
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REQUIRE(var.isNull() == true);
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}
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}
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