nix/tests/unit/libfetchers/public-key.cc

#include <gtest/gtest.h>
#include "fetchers.hh"
#include "json-utils.hh"
#include <nlohmann/json.hpp>
#include "tests/characterization.hh"

namespace nix {

using nlohmann::json;

class PublicKeyTest : public CharacterizationTest
{
    Path unitTestData = getUnitTestData() + "/public-key";

public:
    Path goldenMaster(std::string_view testStem) const override {
        return unitTestData + "/" + testStem;
    }
};

#define TEST_JSON(FIXTURE, NAME, VAL)                                     \
    TEST_F(FIXTURE, PublicKey_ ## NAME ## _from_json) {                   \
        readTest(#NAME ".json", [&](const auto & encoded_) {              \
            fetchers::PublicKey expected { VAL };                         \
            fetchers::PublicKey got = nlohmann::json::parse(encoded_);    \
            ASSERT_EQ(got, expected);                                     \
        });                                                               \
    }                                                                     \
                                                                          \
    TEST_F(FIXTURE, PublicKey_ ## NAME ## _to_json) {                     \
        writeTest(#NAME ".json", [&]() -> json {                          \
            return nlohmann::json(fetchers::PublicKey { VAL });           \
        }, [](const auto & file) {                                        \
            return json::parse(readFile(file));                           \
        }, [](const auto & file, const auto & got) {                      \
            return writeFile(file, got.dump(2) + "\n");                   \
        });                                                               \
    }

TEST_JSON(PublicKeyTest, simple, (fetchers::PublicKey { .type = "ssh-rsa", .key = "ABCDE" }))

TEST_JSON(PublicKeyTest, defaultType, fetchers::PublicKey { .key = "ABCDE" })

#undef TEST_JSON

TEST_F(PublicKeyTest, PublicKey_noRoundTrip_from_json) {
    readTest("noRoundTrip.json", [&](const auto & encoded_) {
        fetchers::PublicKey expected = { .type = "ssh-ed25519", .key = "ABCDE" };
        fetchers::PublicKey got = nlohmann::json::parse(encoded_);
        ASSERT_EQ(got, expected);
    });
}

}