null_value_to_json_test.cpp

#include <gtest/gtest.h>
 
#include <string>
 
#include <userver/protobuf/json/convert.hpp>
#include <userver/utest/assert_macros.hpp>
 
#include "utils.hpp"
 
USERVER_NAMESPACE_BEGIN
 
namespace protobuf::json::tests {
 
struct NullValueToJsonSuccessTestParam {
    NullValueMessageData input = {};
    std::string expected_json = {};
    PrintOptions options = {};
 
    // This variable is used to disable some checks that fail in the native protobuf implementation.
    bool skip_native_check = false;
};
 
class NullValueToJsonSuccessTest : public ::testing::TestWithParam<NullValueToJsonSuccessTestParam> {};
 
INSTANTIATE_TEST_SUITE_P(
    ,
    NullValueToJsonSuccessTest,
    ::testing::Values(
        NullValueToJsonSuccessTestParam{NullValueMessageData{}, R"({})"},
        NullValueToJsonSuccessTestParam{
            NullValueMessageData{},
            R"({"field1":null,"field3":[],"field4":{}})",
            {.always_print_fields_with_no_presence = true},
            // Old protobuf version use NULL_VALUE for 'null'.
            !kIsModernProtoJson
        },
        NullValueToJsonSuccessTestParam{NullValueMessageData{.field2 = kNullConst}, R"({"field2":null})"},
        NullValueToJsonSuccessTestParam{
            NullValueMessageData{
                .field2 = kNullConst,
                .field3 = {kNullConst, kNullConst},
                .field4 = {{1, kNullConst}, {2, kNullConst}}
            },
            R"({"field2":null,"field3":[null,null],"field4":{"1":null,"2":null}})"
        }
    )
);
 
TEST_P(NullValueToJsonSuccessTest, Test) {
    const auto& param = GetParam();
 
    auto input = PrepareTestData(param.input);
    formats::json::Value json;
    formats::json::Value expected_json;
    formats::json::Value sample_json;
 
    UASSERT_NO_THROW((json = MessageToJson(input, param.options)));
    UASSERT_NO_THROW((expected_json = PrepareJsonTestData(param.expected_json)));
 
    if (!param.skip_native_check) {
        UASSERT_NO_THROW((sample_json = CreateSampleJson(input, param.options)));
        EXPECT_EQ(json, sample_json);
    }
 
    EXPECT_EQ(json, expected_json);
}
 
}  // namespace protobuf::json::tests
 
USERVER_NAMESPACE_END