crypto-test.cpp
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	/*
	* This file is part of libkazv.
	* SPDX-FileCopyrightText: 2020-2024 tusooa <tusooa@kazv.moe>
	* SPDX-License-Identifier: AGPL-3.0-or-later
	*/

	#include <libkazv-config.hpp>


	#include <catch2/catch_all.hpp>

	#include <sstream>

	#include <boost/archive/text_iarchive.hpp>
	#include <boost/archive/text_oarchive.hpp>


	#include <crypto/crypto.hpp>
	#include <aes-256-ctr.hpp>
	#include <base64.hpp>
	#include <sha256.hpp>
	#include "crypto/crypto-test-resource.hpp"

	using namespace Kazv;
	using namespace Kazv::CryptoConstants;

	using IAr = boost::archive::text_iarchive;
	using OAr = boost::archive::text_oarchive;

	static const auto resource = cryptoDumpResource();

	json makeEncryptedJson(json ciphertext, std::string senderKey)
	{
	return json{{"content", {
	{"algorithm", olmAlgo},
	{"ciphertext", std::move(ciphertext)},
	{"sender_key", std::move(senderKey)},
	}}};
	}

	template<class T>
	static void serializeDup(const T &in, T &out)
	{
	std::stringstream stream;

	{
	auto ar = OAr(stream);
	ar << in;
	}

	{
	auto ar = IAr(stream);
	ar >> out;
	}
	}

	static bool doesDecryptTo(Crypto &crypto, const nlohmann::json &encryptedEvent, const nlohmann::json &plainText)
	{
	auto res = crypto.decrypt(encryptedEvent);
	if (!res) {
	return false;
	}
	auto decrypted = json::parse(res.value());
	return decrypted == plainText;
	}

	TEST_CASE("Crypto constructors", "[crypto]")
	{
	Crypto crypto;
	REQUIRE(!crypto.valid());

	Crypto crypto2(RandomTag{}, genRandomData(Crypto::constructRandomSize()));
	REQUIRE(crypto2.valid());
	}

	TEST_CASE("Crypto conversion from libolm to vodozemac", "[crypto]")
	{
	Crypto a;
	a.loadJson(resource["a"]);

	Crypto b;
	b.loadJson(resource["b"]);

	// encrypt with existing sessions
	auto aIdKey = a.curve25519IdentityKey();
	auto origJson = json{{"test", "mew"}};
	{
	auto encryptedMsg = b.encryptOlmWithRandom(genRandomData(Crypto::encryptOlmMaxRandomSize()), origJson, aIdKey);

	auto decryptedOpt = a.decrypt(makeEncryptedJson(encryptedMsg, b.curve25519IdentityKey()));

	REQUIRE(decryptedOpt);
	}

	// encrypt/decrypt with new sessions
	auto k = a.unpublishedOneTimeKeys();
	a.markOneTimeKeysAsPublished();

	auto oneTimeKey = std::string{};

	for (auto [id, key] : k[curve25519].items()) {
	oneTimeKey = key;
	}

	{
	Crypto c(RandomTag{}, genRandomData(Crypto::constructRandomSize()));
	c.createOutboundSessionWithRandom(genRandomData(Crypto::createOutboundSessionRandomSize()), aIdKey, oneTimeKey);
	auto encryptedMsg = c.encryptOlmWithRandom(genRandomData(Crypto::encryptOlmMaxRandomSize()), origJson, aIdKey);
	auto decryptedOpt = a.decrypt(makeEncryptedJson(encryptedMsg, c.curve25519IdentityKey()));
	REQUIRE(decryptedOpt.reason() == "");
	REQUIRE(decryptedOpt);
	REQUIRE(decryptedOpt.value() == origJson.dump());
	}
	}

	TEST_CASE("Crypto should be copyable", "[crypto]")
	{
	Crypto crypto(RandomTag{}, genRandomData(Crypto::constructRandomSize()));

	crypto.genOneTimeKeysWithRandom(genRandomData(Crypto::genOneTimeKeysRandomSize(1)), 1);
	auto oneTimeKeys = crypto.unpublishedOneTimeKeys();
	Crypto cryptoClone(crypto);

	REQUIRE(crypto.ed25519IdentityKey() == cryptoClone.ed25519IdentityKey());
	REQUIRE(crypto.curve25519IdentityKey() == cryptoClone.curve25519IdentityKey());

	auto oneTimeKeys2 = cryptoClone.unpublishedOneTimeKeys();

	REQUIRE(oneTimeKeys == oneTimeKeys2);
	REQUIRE(crypto.numUnpublishedOneTimeKeys() == cryptoClone.numUnpublishedOneTimeKeys());
	}

	TEST_CASE("Crypto should be serializable", "[crypto]")
	{
	Crypto crypto(RandomTag{}, genRandomData(Crypto::constructRandomSize()));

	crypto.genOneTimeKeysWithRandom(genRandomData(Crypto::genOneTimeKeysRandomSize(1)), 1);
	auto oneTimeKeys = crypto.unpublishedOneTimeKeys();

	Crypto cryptoClone;

	serializeDup(crypto, cryptoClone);

	REQUIRE(crypto.ed25519IdentityKey() == cryptoClone.ed25519IdentityKey());
	REQUIRE(crypto.curve25519IdentityKey() == cryptoClone.curve25519IdentityKey());

	auto oneTimeKeys2 = cryptoClone.unpublishedOneTimeKeys();

	REQUIRE(oneTimeKeys == oneTimeKeys2);
	REQUIRE(crypto.numUnpublishedOneTimeKeys() == cryptoClone.numUnpublishedOneTimeKeys());
	}

	TEST_CASE("Invalid Crypto should be serializable", "[crypto]")
	{
	Crypto crypto;
	Crypto cryptoClone;
	serializeDup(crypto, cryptoClone);
	REQUIRE(!cryptoClone.valid());
	}

	TEST_CASE("Serialize Crypto with an OutboundGroupSession", "[crypto]")
	{
	Crypto crypto(RandomTag{}, genRandomData(Crypto::constructRandomSize()));

	std::string roomId = "!example:example.org";
	auto desc = MegOlmSessionRotateDesc{500000 /* ms /, 100 / messages */};

	crypto.rotateMegOlmSessionWithRandom(genRandomData(Crypto::rotateMegOlmSessionRandomSize()), currentTimeMs(), roomId);

	Crypto cryptoClone;

	serializeDup(crypto, cryptoClone);

	REQUIRE(! cryptoClone.rotateMegOlmSessionWithRandomIfNeeded(
	genRandomData(Crypto::rotateMegOlmSessionRandomSize()), currentTimeMs(),
	roomId, desc).has_value());
	}

	TEST_CASE("Generating and publishing keys should work", "[crypto]")
	{
	Crypto crypto(RandomTag{}, genRandomData(Crypto::constructRandomSize()));

	crypto.genOneTimeKeysWithRandom(genRandomData(Crypto::genOneTimeKeysRandomSize(1)), 1);

	REQUIRE(crypto.numUnpublishedOneTimeKeys() == 1);

	crypto.genOneTimeKeysWithRandom(genRandomData(Crypto::genOneTimeKeysRandomSize(1)), 1);
	REQUIRE(crypto.numUnpublishedOneTimeKeys() == 2);

	crypto.markOneTimeKeysAsPublished();
	REQUIRE(crypto.numUnpublishedOneTimeKeys() == 0);
	}

	TEST_CASE("Should reuse existing inbound session to encrypt", "[crypto]")
	{
	Crypto a(RandomTag{}, genRandomData(Crypto::constructRandomSize()));
	Crypto b(RandomTag{}, genRandomData(Crypto::constructRandomSize()));

	a.genOneTimeKeysWithRandom(genRandomData(Crypto::genOneTimeKeysRandomSize(1)), 1);
	// Get A publish the key and send to B
	auto k = a.unpublishedOneTimeKeys();
	a.markOneTimeKeysAsPublished();

	auto oneTimeKey = std::string{};

	for (auto [id, key] : k[curve25519].items()) {
	oneTimeKey = key;
	}

	auto aIdKey = a.curve25519IdentityKey();
	b.createOutboundSessionWithRandom(genRandomData(Crypto::createOutboundSessionRandomSize()), aIdKey, oneTimeKey);

	auto origJson = json{{"test", "mew"}};
	auto encryptedMsg = b.encryptOlmWithRandom(genRandomData(Crypto::encryptOlmMaxRandomSize()), origJson, aIdKey);
	auto encJson = json{
	{"content",
	{
	{"algorithm", olmAlgo},
	{"ciphertext", encryptedMsg},
	{"sender_key", b.curve25519IdentityKey()}
	}
	}
	};

	auto decryptedOpt = a.decrypt(encJson);

	REQUIRE(decryptedOpt);

	auto decryptedJson = json::parse(decryptedOpt.value());

	REQUIRE(decryptedJson == origJson);

	using StrMap = immer::map<std::string, std::string>;
	auto devMap = immer::map<std::string, StrMap>()
	.set("b", StrMap().set("dev", b.curve25519IdentityKey()));

	Crypto aClone{a};

	auto devices = a.devicesMissingOutboundSessionKey(devMap);
	auto devicesAClone = aClone.devicesMissingOutboundSessionKey(devMap);

	// No device should be missing an olm session, as A has received an
	// inbound olm session before.
	auto expected = immer::map<std::string, immer::flex_vector<std::string>>();

	REQUIRE(devices == expected);
	REQUIRE(devicesAClone == expected);
	}

	TEST_CASE("Encrypt and decrypt AES-256-CTR", "[crypto][aes256ctr]")
	{
	auto r = genRandom(AES256CTRDesc::randomSize);

	auto desc = AES256CTRDesc::fromRandom(r);
	auto desc2 = desc;

	std::string original = "test for aes-256-ctr";

	auto encrypted = desc.processInPlace(original);

	auto decrypted = desc2.processInPlace(encrypted);

	REQUIRE(original == decrypted);
	}

	TEST_CASE("Encrypt and decrypt AES-256-CTR with any sequence type", "[crypto][aes256ctr]")
	{
	auto r = genRandom(AES256CTRDesc::randomSize);

	auto desc = AES256CTRDesc::fromRandom(r);
	auto desc2 = desc;

	std::string oStr = "test for aes-256-ctr";
	std::vector<unsigned char> original(oStr.begin(), oStr.end());

	auto encrypted = desc.processInPlace(original);

	auto decrypted = desc2.processInPlace(encrypted);

	REQUIRE(original == decrypted);
	}

	TEST_CASE("Encrypt and decrypt AES-256-CTR in a non-destructive way", "[crypto][aes256ctr]")
	{
	auto r = genRandom(AES256CTRDesc::randomSize);

	auto desc = AES256CTRDesc::fromRandom(r);

	std::string original = "test for aes-256-ctr";

	auto [next, encrypted] = desc.process(original);

	auto [next2, encrypted2] = desc.process(original);

	REQUIRE(encrypted == encrypted2);

	auto [next3, decrypted] = desc.process(encrypted);

	REQUIRE(original == decrypted);
	}

	TEST_CASE("Encrypt and decrypt AES-256-CTR in batches", "[crypto][aes256ctr]")
	{
	auto r = genRandom(AES256CTRDesc::randomSize);

	auto desc = AES256CTRDesc::fromRandom(r);

	std::string original = "test for aes-256-ctr";

	std::string orig2 = "another test string...";

	auto [next, encrypted] = desc.process(original);
	auto [next2, encrypted2] = next.process(orig2);

	auto [next3, decrypted] = desc.process(encrypted + encrypted2);

	REQUIRE(original + orig2 == decrypted);
	}

	TEST_CASE("AES-256-CTR should be movable", "[crypto][aes256ctr]")
	{
	auto r = genRandom(AES256CTRDesc::randomSize);

	auto desc = AES256CTRDesc::fromRandom(r);

	auto desc2 = std::move(desc);

	REQUIRE(desc2.valid());
	REQUIRE(! desc.valid());

	std::string original = "test for aes-256-ctr";

	std::string encrypted;

	// Can be moved from itself
	desc2 = std::move(desc2);
	REQUIRE(desc2.valid());

	std::tie(desc2, encrypted) = std::move(desc2).process(original);

	REQUIRE(desc2.valid());
	}

	TEST_CASE("AES-256-CTR should be copyable", "[crypto][aes256ctr]")
	{
	auto r = genRandom(AES256CTRDesc::randomSize);

	auto desc = AES256CTRDesc::fromRandom(r);

	auto desc2 = desc;

	REQUIRE(desc2.valid());
	REQUIRE(desc.valid());

	desc = AES256CTRDesc::fromRandom(RandomData{});

	std::string original = "test for aes-256-ctr";

	std::string encrypted;

	REQUIRE(desc2.valid());

	std::tie(desc2, encrypted) = desc2.process(original);

	REQUIRE(desc2.valid());
	}

	TEST_CASE("Construct AES-256-CTR from known key and iv", "[crypto][aes256ctr]")
	{
	auto r = genRandom(AES256CTRDesc::randomSize);

	auto desc = AES256CTRDesc::fromRandom(r);

	auto desc2 = AES256CTRDesc(desc.key(), desc.iv());

	REQUIRE(desc2.valid());
	REQUIRE(desc.key() == desc2.key());
	REQUIRE(desc.iv() == desc2.iv());
	}

	TEST_CASE("AES-256-CTR validity check", "[crypto][aes256ctr]")
	{
	SECTION("Not enough random, should reject") {
	ByteArray random = genRandom(AES256CTRDesc::randomSize - 1);

	auto desc = AES256CTRDesc::fromRandom(random);

	REQUIRE(! desc.valid());
	}

	SECTION("More than enough random, should accept") {
	ByteArray random = genRandom(AES256CTRDesc::randomSize + 1);

	auto desc = AES256CTRDesc::fromRandom(random);

	REQUIRE(desc.valid());
	}

	}

	TEST_CASE("AES256CTRDesc::fromRandom() should leave the lower 8 bytes as 0 for the counter", "[crypto][aes256ctr]")
	{
	auto r = genRandom(AES256CTRDesc::randomSize);

	auto desc = AES256CTRDesc::fromRandom(r);
	auto iv = decodeBase64(desc.iv());
	REQUIRE(iv.size() == AES256CTRDesc::ivSize);
	REQUIRE(std::all_of(iv.begin() + AES256CTRDesc::ivSizeInit, iv.end(), [](auto ch) { return ch == 0; }));
	auto desc2 = desc;

	std::string original = "test for aes-256-ctr";

	auto encrypted = desc.processInPlace(original);

	auto decrypted = desc2.processInPlace(encrypted);

	REQUIRE(original == decrypted);
	}

	TEST_CASE("Base64 encoder and decoder", "[crypto][base64]")
	{
	std::string orig = "The Quick Brown Fox Jumps Over the Lazy Dog";
	// no padding
	std::string expected = "VGhlIFF1aWNrIEJyb3duIEZveCBKdW1wcyBPdmVyIHRoZSBMYXp5IERvZw";
	std::string encoded = encodeBase64(orig);
	REQUIRE(encoded == expected);

	std::string decoded = decodeBase64(encoded);
	REQUIRE(decoded == orig);
	}

	TEST_CASE("Urlsafe base64 encoder and decoder", "[crypto][base64]")
	{
	std::string orig = "The Quick Brown Fox Jumps Over the Lazy Dog";
	// no padding
	std::string expected = "VGhlIFF1aWNrIEJyb3duIEZveCBKdW1wcyBPdmVyIHRoZSBMYXp5IERvZw";
	std::string encoded = encodeBase64(orig, Base64Opts::urlSafe);
	REQUIRE(encoded == expected);

	std::string decoded = decodeBase64(encoded, Base64Opts::urlSafe);
	REQUIRE(decoded == orig);
	}

	TEST_CASE("Base64 encoder and decoder, example from Matrix specs", "[crypto][base64]")
	{
	std::string orig = "JGLn/yafz74HB2AbPLYJWIVGnKAtqECOBf11yyXac2Y";

	std::string decoded = decodeBase64(orig);
	std::string encoded = encodeBase64(decoded);
	REQUIRE(encoded == orig);
	}

	TEST_CASE("Urlsafe base64 encoder and decoder, example from Matrix specs", "[crypto][base64]")
	{
	std::string orig = "JGLn_yafz74HB2AbPLYJWIVGnKAtqECOBf11yyXac2Y";

	std::string decoded = decodeBase64(orig, Base64Opts::urlSafe);
	std::string encoded = encodeBase64(decoded, Base64Opts::urlSafe);
	REQUIRE(encoded == orig);
	}

	TEST_CASE("SHA256 hashing support", "[crypto][sha256]")
	{
	auto hash = SHA256Desc{};

	auto message1 = std::string("12345678910");
	hash.processInPlace(message1);

	auto res = hash.get();
	auto expected = std::string("Y2QCZISah8kDVhKdmeoWXjeqX6vB/qRpBt8afKUNtJI");

	REQUIRE(res == expected);
	}

	TEST_CASE("SHA256 hashing streaming", "[crypto][sha256]")
	{
	auto hash = SHA256Desc{};

	auto message1 = std::string("12345678910");
	auto message2 = std::string("abcdefghijklmn");
	hash.processInPlace(message1);
	hash.processInPlace(message2);

	auto res = hash.get();

	auto hash2 = SHA256Desc{};

	hash2.processInPlace(message1 + message2);
	auto expected = hash2.get();

	REQUIRE(res == expected);
	}

	TEST_CASE("SHA256Desc should be copyable", "[crypto][sha256]")
	{
	auto hash = SHA256Desc{};

	auto message1 = std::string("12345678910");
	auto message2 = std::string("abcdefghijklmn");
	hash.processInPlace(message1);

	auto hash2 = hash;

	hash.processInPlace(message2);
	hash2.processInPlace(message2);

	auto res = hash.get();
	auto res2 = hash2.get();

	REQUIRE(res == res2);
	}

	TEST_CASE("SHA256Desc should be self-copyable and -movable", "[crypto][sha256]")
	{
	auto hash = SHA256Desc{};

	auto message1 = std::string("12345678910");
	hash = hash.process(message1);

	auto message2 = std::string("abcdefghijklmn");
	hash = std::move(hash).process(message2);

	auto hash2 = SHA256Desc{};

	hash2.processInPlace(message1 + message2);

	auto res = hash.get();
	auto res2 = hash2.get();

	REQUIRE(res == res2);
	}

	TEST_CASE("SHA256 should accept any range type", "[crypto][sha256]")
	{
	std::string msg = "12345678910";
	std::vector<char> arr(msg.begin(), msg.end());

	auto hash = SHA256Desc{};

	auto res1 = hash.process(arr).get();

	auto res2 = std::move(hash).process(arr).get();

	// after moving, hash is no longer valid, reset it here
	hash = SHA256Desc{};

	hash.processInPlace(arr);
	auto res3 = hash.get();

	hash = SHA256Desc{};
	auto reference = hash.process(msg).get();

	REQUIRE(res1 == res2);
	REQUIRE(res1 == res3);
	REQUIRE(res1 == reference);
	}

	TEST_CASE("Crypto::createInboundGroupSession should not allow session key replacement attacks", "[crypto][group-session]")
	{
	std::string roomId = "!someroom:example.com";
	Crypto a(RandomTag{}, genRandomData(Crypto::constructRandomSize()));

	// creating a outbound group session will add it to inbound group sessions
	auto initialKey = a.rotateMegOlmSessionWithRandom(
	genRandomData(Crypto::rotateMegOlmSessionRandomSize()),
	0,
	roomId
	);

	// encrypt to get the session id
	auto plainText = R"({
	"content": {},
	"type": "m.room.message",
	"room_id": "!someroom:example.com"
	})"_json;
	auto encryptedContent = a.encryptMegOlm(plainText);
	auto encryptedEvent = json{
	{"event_id", "$some-event-id1"},
	{"origin_server_ts", 1719196953000},
	{"content", encryptedContent},
	{"type", "m.room.encrypted"},
	{"room_id", roomId},
	};

	// message index is currently at 1
	auto currentKey = a.outboundGroupSessionCurrentKey(roomId);

	auto sessionId = encryptedContent["session_id"].template get<std::string>();

	auto plainText2 = R"({
	"content": {"a": "b"},
	"type": "m.room.message",
	"room_id": "!someroom:example.com"
	})"_json;
	auto encryptedContent2 = a.encryptMegOlm(plainText2);

	Crypto b(RandomTag{}, genRandomData(Crypto::constructRandomSize()));
	Crypto malice(RandomTag{}, genRandomData(Crypto::constructRandomSize()));

	auto encryptedEvent2 = json{
	{"event_id", "$some-event-id"},
	{"origin_server_ts", 1719196953000},
	{"content", encryptedContent2},
	{"type", "m.room.encrypted"},
	{"room_id", roomId},
	};

	auto keyOfSession = KeyOfGroupSession{roomId, sessionId};
	auto created = b.createInboundGroupSession(keyOfSession, currentKey, a.ed25519IdentityKey());
	REQUIRE(created);
	REQUIRE(doesDecryptTo(b, encryptedEvent2, plainText2));

	SECTION("it should reject if the identity key is not the same") {
	auto updated = b.createInboundGroupSession(keyOfSession, initialKey, malice.ed25519IdentityKey());
	REQUIRE(!updated);
	}

	SECTION("it should reject if the given session key does not belong to the same session") {
	auto anotherSessionKey = a.rotateMegOlmSessionWithRandom(
	genRandomData(Crypto::rotateMegOlmSessionRandomSize()),
	0,
	roomId
	);
	auto updated = b.createInboundGroupSession(keyOfSession, anotherSessionKey, a.ed25519IdentityKey());
	REQUIRE(!updated);
	}

	SECTION("it should prevent replay attack if merging with itself") {
	auto updated = b.createInboundGroupSession(keyOfSession, currentKey, a.ed25519IdentityKey());
	REQUIRE(updated);

	REQUIRE(doesDecryptTo(b, encryptedEvent2, plainText2));
	auto replay = encryptedEvent2;
	replay["event_id"] = "$some-other-id";
	REQUIRE(!b.decrypt(replay).has_value());
	}

	SECTION("it should prevent replay attack if session is updated") {
	auto updated = b.createInboundGroupSession(keyOfSession, initialKey, a.ed25519IdentityKey());
	REQUIRE(updated);

	REQUIRE(doesDecryptTo(b, encryptedEvent2, plainText2));
	REQUIRE(doesDecryptTo(b, encryptedEvent, plainText));
	auto replay = encryptedEvent2;
	replay["event_id"] = "$some-other-id";
	REQUIRE(!b.decrypt(replay).has_value());
	}
	}

	TEST_CASE("Crypto::hasInboundGroupSession", "[crypto][group-session]")
	{
	Crypto crypto(RandomTag{}, genRandomData(Crypto::constructRandomSize()));

	// creating a outbound group session will add it to inbound group sessions
	crypto.rotateMegOlmSessionWithRandom(
	genRandomData(Crypto::rotateMegOlmSessionRandomSize()),
	0,
	"!someroom:example.com"
	);

	// encrypt to get the session id
	auto encryptedContent = crypto.encryptMegOlm(R"({
	"content": {},
	"type": "m.room.message",
	"room_id": "!someroom:example.com"
	})"_json);

	auto sessionId = encryptedContent["session_id"].template get<std::string>();

	REQUIRE(crypto.hasInboundGroupSession(KeyOfGroupSession{
	"!someroom:example.com",
	sessionId,
	}));

	REQUIRE(!crypto.hasInboundGroupSession(KeyOfGroupSession{
	"!someroom:example.com",
	sessionId + "something something",
	}));
	}

	TEST_CASE("Crypto::decrypt(MegOlmEvent)", "[crypto][group-session]")
	{
	Crypto crypto(RandomTag{}, genRandomData(Crypto::constructRandomSize()));

	crypto.rotateMegOlmSessionWithRandom(
	genRandomData(Crypto::rotateMegOlmSessionRandomSize()),
	0,
	"!someroom:example.com"
	);

	auto plainText = R"({
	"content": {"body": "something"},
	"type": "m.room.message",
	"room_id": "!someroom:example.com"
	})"_json;
	// encrypt to get the session id
	auto encryptedContent = crypto.encryptMegOlm(plainText);

	auto encryptedEvent = json{
	{"event_id", "$some-event-id"},
	{"origin_server_ts", 1719196953000},
	{"content", encryptedContent},
	{"type", "m.room.encrypted"},
	{"room_id", "!someroom:example.com"},
	};

	REQUIRE(doesDecryptTo(crypto, encryptedEvent, plainText));
	}

	TEST_CASE("KeyOfGroupSession serialization", "[crypto][group-session]")
	{
	{
	auto k = KeyOfGroupSession{"!someroom:example.com", "some-session-id"};
	json j = k;
	REQUIRE(j == json{
	{"roomId", "!someroom:example.com"},
	{"sessionId", "some-session-id"},
	});
	}

	{
	json j{
	{"roomId", "!someroom:example.com"},
	{"senderKey", "some-key"}, // legacy version
	{"sessionId", "some-session-id"},
	};
	auto k = j.template get<KeyOfGroupSession>();
	REQUIRE(k == KeyOfGroupSession{"!someroom:example.com", "some-session-id"});
	}
	}

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