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https://github.com/bblanchon/ArduinoJson.git
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cd8373ad32
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
48 lines
988 B
C++
48 lines
988 B
C++
#include <ArduinoJson.h>
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#include <catch.hpp>
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#if !ARDUINOJSON_HAS_NULLPTR
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# error ARDUINOJSON_HAS_NULLPTR must be set to 1
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#endif
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TEST_CASE("nullptr") {
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DynamicJsonDocument doc(4096);
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JsonVariant variant = doc.to<JsonVariant>();
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SECTION("JsonVariant == nullptr") {
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REQUIRE((variant == nullptr));
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REQUIRE_FALSE((variant != nullptr));
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}
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SECTION("JsonVariant != nullptr") {
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variant.set(42);
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REQUIRE_FALSE((variant == nullptr));
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REQUIRE((variant != nullptr));
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}
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SECTION("JsonVariant.set(nullptr)") {
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variant.set(42);
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variant.set(nullptr);
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REQUIRE(variant.isNull());
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}
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SECTION("JsonVariant.set(nullptr) with unbound reference") {
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JsonVariant unboundReference;
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unboundReference.set(nullptr);
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REQUIRE(variant.isNull());
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}
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SECTION("JsonVariant.is<nullptr_t>()") {
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variant.set(42);
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REQUIRE(variant.is<std::nullptr_t>() == false);
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variant.clear();
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REQUIRE(variant.is<std::nullptr_t>() == true);
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}
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}
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