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40 lines
871 B
40 lines
871 B
3 years ago
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// ArduinoJson - https://arduinojson.org
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// Copyright Benoit Blanchon 2014-2021
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// MIT License
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#include <ArduinoJson.h>
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#include <catch.hpp>
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TEST_CASE("JsonDocument::isNull()") {
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DynamicJsonDocument doc(4096);
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SECTION("returns true if uninitialized") {
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REQUIRE(doc.isNull() == true);
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}
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SECTION("returns false after to<JsonObject>()") {
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doc.to<JsonObject>();
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REQUIRE(doc.isNull() == false);
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}
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SECTION("returns false after to<JsonArray>()") {
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doc.to<JsonArray>();
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REQUIRE(doc.isNull() == false);
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}
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SECTION("returns true after to<JsonVariant>()") {
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REQUIRE(doc.isNull() == true);
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}
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SECTION("returns false after set()") {
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doc.to<JsonVariant>().set(42);
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REQUIRE(doc.isNull() == false);
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}
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SECTION("returns true after clear()") {
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doc.to<JsonObject>();
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doc.clear();
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REQUIRE(doc.isNull() == true);
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}
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}
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