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isNull()

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This commit is contained in:
Benoit Blanchon
2022-03-11 18:28:37 +01:00
parent 45c77b5558
commit cf56a7de2a
2 changed files with 26 additions and 11 deletions
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35
extras/tests/JsonVariant/isnull.cpp
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@@ -9,17 +9,17 @@ TEST_CASE("JsonVariant::isNull()") {
DynamicJsonDocument doc(4096); DynamicJsonDocument doc(4096);
JsonVariant variant = doc.to<JsonVariant>(); JsonVariant variant = doc.to<JsonVariant>();
SECTION("return true when Undefined") { SECTION("returns true when Undefined") {
REQUIRE(variant.isNull() == true); REQUIRE(variant.isNull() == true);
} }
SECTION("return false when Integer") { SECTION("returns false when Integer") {
variant.set(42); variant.set(42);
REQUIRE(variant.isNull() == false); REQUIRE(variant.isNull() == false);
} }
SECTION("return false when EmptyArray") { SECTION("returns false when EmptyArray") {
DynamicJsonDocument doc2(4096); DynamicJsonDocument doc2(4096);
JsonArray array = doc2.to<JsonArray>(); JsonArray array = doc2.to<JsonArray>();
@@ -27,7 +27,7 @@ TEST_CASE("JsonVariant::isNull()") {
REQUIRE(variant.isNull() == false); REQUIRE(variant.isNull() == false);
} }
SECTION("return false when EmptyObject") { SECTION("returns false when EmptyObject") {
DynamicJsonDocument doc2(4096); DynamicJsonDocument doc2(4096);
JsonObject obj = doc2.to<JsonObject>(); JsonObject obj = doc2.to<JsonObject>();
@@ -35,41 +35,54 @@ TEST_CASE("JsonVariant::isNull()") {
REQUIRE(variant.isNull() == false); REQUIRE(variant.isNull() == false);
} }
SECTION("return true after set(JsonArray())") { SECTION("returns true after set(JsonArray())") {
variant.set(JsonArray()); variant.set(JsonArray());
REQUIRE(variant.isNull() == true); REQUIRE(variant.isNull() == true);
} }
SECTION("return true after set(JsonObject())") { SECTION("returns true after set(JsonObject())") {
variant.set(JsonObject()); variant.set(JsonObject());
REQUIRE(variant.isNull() == true); REQUIRE(variant.isNull() == true);
} }
SECTION("return false after set('hello')") { SECTION("returns false after set('hello')") {
variant.set("hello"); variant.set("hello");
REQUIRE(variant.isNull() == false); REQUIRE(variant.isNull() == false);
} }
SECTION("return true after set((char*)0)") { SECTION("returns true after set((char*)0)") {
variant.set(static_cast<char*>(0)); variant.set(static_cast<char*>(0));
REQUIRE(variant.isNull() == true); REQUIRE(variant.isNull() == true);
} }
SECTION("return true after set((const char*)0)") { SECTION("returns true after set((const char*)0)") {
variant.set(static_cast<const char*>(0)); variant.set(static_cast<const char*>(0));
REQUIRE(variant.isNull() == true); REQUIRE(variant.isNull() == true);
} }
SECTION("return true after set(serialized((char*)0))") { SECTION("returns true after set(serialized((char*)0))") {
variant.set(serialized(static_cast<char*>(0))); variant.set(serialized(static_cast<char*>(0)));
REQUIRE(variant.isNull() == true); REQUIRE(variant.isNull() == true);
} }
SECTION("return true after set(serialized((const char*)0))") { SECTION("returns true after set(serialized((const char*)0))") {
variant.set(serialized(static_cast<const char*>(0))); variant.set(serialized(static_cast<const char*>(0)));
REQUIRE(variant.isNull() == true); REQUIRE(variant.isNull() == true);
} }
SECTION("returns true for a linked null") {
StaticJsonDocument<128> doc2;
variant.link(doc2);
CHECK(variant.isNull() == true);
}
SECTION("returns false for a linked array") {
StaticJsonDocument<128> doc2;
doc2[0] = 42;
variant.link(doc2);
CHECK(variant.isNull() == false);
}
SECTION("works with JsonVariantConst") { SECTION("works with JsonVariantConst") {
variant.set(42); variant.set(42);

2
src/ArduinoJson/Variant/VariantData.hpp
View File

@@ -165,6 +165,8 @@ class VariantData {
} }
bool isNull() const { bool isNull() const {
if (isPointer())
return _content.asPointer->isNull();
return type() == VALUE_IS_NULL; return type() == VALUE_IS_NULL;
} }