/*
 * Copyright (C) 2004-2023 ZNC, see the NOTICE file for details.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include <gtest/gtest.h>
#include <gmock/gmock.h>
#include "IRCTest.h"
#include <algorithm>

using testing::ElementsAre;
using testing::ContainerEq;
using testing::InSequence;
using testing::Invoke;
using testing::IsEmpty;
using testing::Mock;
using testing::ResultOf;
using testing::_;

class IRCSockTest : public IRCTest {
  protected:
};

TEST_F(IRCSockTest, OnAccountMessage) {
    CMessage msg(":nick!user@host ACCOUNT accountname");
    m_pTestSock->ReadLine(msg.ToString());

    EXPECT_THAT(m_pTestModule->vsHooks,
                IsEmpty());  // no OnAccountMessage() hook (yet?)
    EXPECT_THAT(m_pTestClient->vsLines, IsEmpty());  // account-notify disabled
}

TEST_F(IRCSockTest, OnActionMessage) {
    // 2 callbacks are called in row: OnCTCP, OnAction.
    // If OnCTCP returns HALT, OnAction isn't called.
    struct ActionModule : TestModule {
        ActionModule() { Reset(); }
        void Reset() {
            Mock::VerifyAndClear(this);
            EXPECT_CALL(*this, OnPrivCTCPMessage(_)).Times(0);
            EXPECT_CALL(*this, OnChanCTCPMessage(_)).Times(0);
            EXPECT_CALL(*this, OnPrivActionMessage(_)).Times(0);
            EXPECT_CALL(*this, OnChanActionMessage(_)).Times(0);
            TestModule::Reset();
        }
        MOCK_METHOD1(OnPrivCTCPMessage, EModRet(CCTCPMessage&));
        MOCK_METHOD1(OnChanCTCPMessage, EModRet(CCTCPMessage&));
        MOCK_METHOD1(OnPrivActionMessage, EModRet(CActionMessage&));
        MOCK_METHOD1(OnChanActionMessage, EModRet(CActionMessage&));
    };
    ActionModule testModule;
    CZNC::Get().GetModules().push_back(&testModule);
    CChan* pExpectedChan = m_pTestChan;

    CMessage msg(":nick PRIVMSG #chan :\001ACTION hello\001");
    auto CON = Invoke([&](CMessage& m) {
        EXPECT_EQ(m.ToString(), msg.ToString());
        EXPECT_EQ(m.GetNetwork(), m_pTestNetwork);
        EXPECT_EQ(m.GetChan(), pExpectedChan);
        return CModule::CONTINUE;
    });
    auto HAL = Invoke([&](CMessage& m) {
        EXPECT_EQ(m.ToString(), msg.ToString());
        EXPECT_EQ(m.GetNetwork(), m_pTestNetwork);
        EXPECT_EQ(m.GetChan(), pExpectedChan);
        return CModule::HALT;
    });
    auto Reset = [&]() {
        testModule.Reset();
        m_pTestClient->Reset();
    };

    Reset();
    {
        InSequence seq;
        EXPECT_CALL(testModule, OnChanCTCPMessage(_)).WillOnce(CON);
        EXPECT_CALL(testModule, OnChanActionMessage(_)).WillOnce(CON);
    }
    m_pTestSock->ReadLine(msg.ToString());
    EXPECT_THAT(m_pTestClient->vsLines, ElementsAre(msg.ToString()));

    Reset();
    {
        InSequence seq;
        EXPECT_CALL(testModule, OnChanCTCPMessage(_)).WillOnce(CON);
        EXPECT_CALL(testModule, OnChanActionMessage(_)).WillOnce(HAL);
    }
    m_pTestSock->ReadLine(msg.ToString());
    EXPECT_THAT(m_pTestClient->vsLines, IsEmpty());

    Reset();
    EXPECT_CALL(testModule, OnChanCTCPMessage(_)).WillOnce(HAL);
    m_pTestSock->ReadLine(msg.ToString());
    EXPECT_THAT(m_pTestClient->vsLines, IsEmpty());

    msg.Parse(":nick PRIVMSG me :\001ACTION hello\001");
    pExpectedChan = nullptr;

    Reset();
    {
        InSequence seq;
        EXPECT_CALL(testModule, OnPrivCTCPMessage(_)).WillOnce(CON);
        EXPECT_CALL(testModule, OnPrivActionMessage(_)).WillOnce(CON);
    }
    m_pTestSock->ReadLine(msg.ToString());
    EXPECT_THAT(m_pTestClient->vsLines, ElementsAre(msg.ToString()));

    Reset();
    {
        InSequence seq;
        EXPECT_CALL(testModule, OnPrivCTCPMessage(_)).WillOnce(CON);
        EXPECT_CALL(testModule, OnPrivActionMessage(_)).WillOnce(HAL);
    }
    m_pTestSock->ReadLine(msg.ToString());
    EXPECT_THAT(m_pTestClient->vsLines, IsEmpty());

    Reset();
    EXPECT_CALL(testModule, OnPrivCTCPMessage(_)).WillOnce(HAL);
    m_pTestSock->ReadLine(msg.ToString());
    EXPECT_THAT(m_pTestClient->vsLines, IsEmpty());
}

TEST_F(IRCSockTest, OnAwayMessage) {
    CMessage msg(":nick!user@host AWAY :reason");
    m_pTestSock->ReadLine(msg.ToString());

    EXPECT_THAT(m_pTestModule->vsHooks,
                IsEmpty());  // no OnAwayMessage() hook (yet?)
    EXPECT_THAT(m_pTestClient->vsLines, IsEmpty());  // away-notify disabled
}

TEST_F(IRCSockTest, OnCapabilityMessage) {
    CMessage msg(":server CAP * LS :multi-prefix sasl");
    m_pTestSock->ReadLine(msg.ToString());

    EXPECT_THAT(m_pTestModule->vsHooks,
                IsEmpty());  // no OnCapabilityMessage() hook (yet?)
    EXPECT_THAT(m_pTestClient->vsLines, IsEmpty());
}

TEST_F(IRCSockTest, OnCTCPMessage) {
    CMessage msg(":nick PRIVMSG #chan :\001VERSION\001");
    m_pTestModule->eAction = CModule::HALT;
    m_pTestSock->ReadLine(msg.ToString());

    EXPECT_THAT(m_pTestModule->vsHooks, ElementsAre("OnChanCTCPMessage"));
    EXPECT_THAT(m_pTestModule->vsMessages, ElementsAre(msg.ToString()));
    EXPECT_THAT(m_pTestModule->vNetworks, ElementsAre(m_pTestNetwork));
    EXPECT_THAT(m_pTestModule->vChannels, ElementsAre(m_pTestChan));
    EXPECT_THAT(m_pTestClient->vsLines, IsEmpty());  // halt

    m_pTestModule->eAction = CModule::CONTINUE;
    m_pTestSock->ReadLine(msg.ToString());

    EXPECT_THAT(m_pTestClient->vsLines, ElementsAre(msg.ToString()));

    m_pTestClient->Reset();
    m_pTestModule->Reset();

    msg.Parse(":nick PRIVMSG me :\001VERSION\001");
    m_pTestModule->eAction = CModule::HALT;
    m_pTestSock->ReadLine(msg.ToString());

    EXPECT_THAT(m_pTestModule->vsHooks, ElementsAre("OnPrivCTCPMessage"));
    EXPECT_THAT(m_pTestModule->vsMessages, ElementsAre(msg.ToString()));
    EXPECT_THAT(m_pTestModule->vNetworks, ElementsAre(m_pTestNetwork));
    EXPECT_THAT(m_pTestModule->vChannels, ElementsAre(nullptr));
    EXPECT_THAT(m_pTestClient->vsLines, IsEmpty());  // halt

    m_pTestModule->eAction = CModule::CONTINUE;
    m_pTestSock->ReadLine(msg.ToString());

    EXPECT_THAT(m_pTestClient->vsLines, ElementsAre(msg.ToString()));

    m_pTestClient->Reset();
    m_pTestModule->Reset();

    msg.Parse(":nick NOTICE me :\001VERSION ZNC 0.0\001");
    m_pTestModule->eAction = CModule::HALT;
    m_pTestSock->ReadLine(msg.ToString());

    EXPECT_THAT(m_pTestModule->vsHooks, ElementsAre("OnCTCPReplyMessage"));
    EXPECT_THAT(m_pTestModule->vsMessages, ElementsAre(msg.ToString()));
    EXPECT_THAT(m_pTestModule->vNetworks, ElementsAre(m_pTestNetwork));
    EXPECT_THAT(m_pTestModule->vChannels, ElementsAre(nullptr));
    EXPECT_THAT(m_pTestClient->vsLines, IsEmpty());  // halt

    m_pTestModule->eAction = CModule::CONTINUE;
    m_pTestSock->ReadLine(msg.ToString());

    EXPECT_THAT(m_pTestClient->vsLines, ElementsAre(msg.ToString()));
}

TEST_F(IRCSockTest, OnErrorMessage) {
    CMessage msg(":server ERROR :foo bar");
    m_pTestSock->ReadLine(msg.ToString());

    EXPECT_THAT(m_pTestModule->vsHooks,
                IsEmpty());  // no OnErrorMessage() hook (yet?)
    EXPECT_THAT(
        m_pTestClient->vsLines,
        ElementsAre(
            ":*status!znc@znc.in PRIVMSG me :Error from server: foo bar"));
}

TEST_F(IRCSockTest, OnInviteMessage) {
    CMessage msg(":nick INVITE me #znc");
    m_pTestSock->ReadLine(msg.ToString());

    EXPECT_THAT(m_pTestModule->vsHooks,
                IsEmpty());  // no OnInviteMessage() hook (yet?)
    EXPECT_THAT(m_pTestClient->vsLines, ElementsAre(msg.ToString()));
}

TEST_F(IRCSockTest, OnJoinMessage) {
    CMessage msg(":somebody JOIN #chan");
    m_pTestSock->ReadLine(msg.ToString());

    EXPECT_THAT(m_pTestModule->vsHooks, ElementsAre("OnJoinMessage"));
    EXPECT_THAT(m_pTestModule->vsMessages, ElementsAre(msg.ToString()));
    EXPECT_THAT(m_pTestModule->vNetworks, ElementsAre(m_pTestNetwork));
    EXPECT_THAT(m_pTestModule->vChannels, ElementsAre(m_pTestChan));
}

TEST_F(IRCSockTest, OnKickMessage) {
    CMessage msg(":nick KICK #chan person :reason");
    m_pTestSock->ReadLine(msg.ToString());

    EXPECT_THAT(m_pTestModule->vsHooks, ElementsAre("OnKickMessage"));
    EXPECT_THAT(m_pTestModule->vsMessages, ElementsAre(msg.ToString()));
    EXPECT_THAT(m_pTestModule->vNetworks, ElementsAre(m_pTestNetwork));
    EXPECT_THAT(m_pTestModule->vChannels, ElementsAre(m_pTestChan));
}

TEST_F(IRCSockTest, OnModeMessage) {
    CMessage msg(":nick MODE #chan +k key");
    m_pTestSock->ReadLine(msg.ToString());

    EXPECT_THAT(m_pTestModule->vsHooks,
                IsEmpty());  // no OnModeMessage() hook (yet?)
    EXPECT_THAT(m_pTestClient->vsLines, ElementsAre(msg.ToString()));
}

TEST_F(IRCSockTest, OnNickMessage) {
    CMessage msg(":nobody NICK nick");
    m_pTestSock->ReadLine(msg.ToString());

    EXPECT_THAT(m_pTestModule->vsHooks, ElementsAre("OnNickMessage"));
    EXPECT_THAT(m_pTestModule->vsMessages, ElementsAre(msg.ToString()));
    EXPECT_THAT(m_pTestModule->vNetworks, ElementsAre(m_pTestNetwork));
    EXPECT_THAT(m_pTestModule->vChannels, ElementsAre(nullptr));
    EXPECT_THAT(m_pTestClient->vsLines, IsEmpty());

    msg.Parse(":nick NICK somebody");
    m_pTestSock->ReadLine(msg.ToString());

    EXPECT_THAT(m_pTestClient->vsLines, ElementsAre(msg.ToString()));
}

TEST_F(IRCSockTest, OnNoticeMessage) {
    CMessage msg(":nick NOTICE #chan :hello");
    m_pTestModule->eAction = CModule::HALT;
    m_pTestSock->ReadLine(msg.ToString());

    EXPECT_THAT(m_pTestModule->vsHooks, ElementsAre("OnChanNoticeMessage"));
    EXPECT_THAT(m_pTestModule->vsMessages, ElementsAre(msg.ToString()));
    EXPECT_THAT(m_pTestModule->vNetworks, ElementsAre(m_pTestNetwork));
    EXPECT_THAT(m_pTestModule->vChannels, ElementsAre(m_pTestChan));
    EXPECT_THAT(m_pTestClient->vsLines, IsEmpty());  // halt

    m_pTestModule->eAction = CModule::CONTINUE;
    m_pTestSock->ReadLine(msg.ToString());

    EXPECT_THAT(m_pTestClient->vsLines, ElementsAre(msg.ToString()));

    m_pTestClient->Reset();
    m_pTestModule->Reset();

    msg.Parse(":nick NOTICE me :hello");
    m_pTestModule->eAction = CModule::HALT;
    m_pTestSock->ReadLine(msg.ToString());

    EXPECT_THAT(m_pTestModule->vsHooks, ElementsAre("OnPrivNoticeMessage"));
    EXPECT_THAT(m_pTestModule->vsMessages, ElementsAre(msg.ToString()));
    EXPECT_THAT(m_pTestModule->vNetworks, ElementsAre(m_pTestNetwork));
    EXPECT_THAT(m_pTestModule->vChannels, ElementsAre(nullptr));
    EXPECT_THAT(m_pTestClient->vsLines, IsEmpty());  // halt

    m_pTestModule->eAction = CModule::CONTINUE;
    m_pTestSock->ReadLine(msg.ToString());

    EXPECT_THAT(m_pTestClient->vsLines, ElementsAre(msg.ToString()));
}

TEST_F(IRCSockTest, OnNumericMessage) {
    CMessage msg(":irc.server.com 372 nick :motd");
    m_pTestModule->eAction = CModule::HALT;
    m_pTestSock->ReadLine(msg.ToString());

    EXPECT_THAT(m_pTestModule->vsHooks, ElementsAre("OnNumericMessage"));
    EXPECT_THAT(m_pTestModule->vsMessages, ElementsAre(msg.ToString()));
    EXPECT_THAT(m_pTestModule->vNetworks, ElementsAre(m_pTestNetwork));
    EXPECT_THAT(m_pTestModule->vChannels, ElementsAre(nullptr));
    EXPECT_THAT(m_pTestClient->vsLines, IsEmpty());  // halt

    m_pTestModule->eAction = CModule::CONTINUE;
    m_pTestSock->ReadLine(msg.ToString());

    EXPECT_THAT(m_pTestClient->vsLines, ElementsAre(msg.ToString()));
}

TEST_F(IRCSockTest, OnPartMessage) {
    CMessage msg(":nick PART #chan :reason");
    m_pTestSock->ReadLine(msg.ToString());

    EXPECT_THAT(m_pTestModule->vsHooks, ElementsAre("OnPartMessage"));
    EXPECT_THAT(m_pTestModule->vsMessages, ElementsAre(msg.ToString()));
    EXPECT_THAT(m_pTestModule->vNetworks, ElementsAre(m_pTestNetwork));
    EXPECT_THAT(m_pTestModule->vChannels, ElementsAre(m_pTestChan));
}

TEST_F(IRCSockTest, StatusModes) {
    m_pTestSock->ReadLine(
        ":server 005 user PREFIX=(Yohv)!@%+ :are supported by this server");

    EXPECT_TRUE(m_pTestSock->IsPermMode('Y'));
    EXPECT_TRUE(m_pTestSock->IsPermMode('o'));
    EXPECT_TRUE(m_pTestSock->IsPermMode('h'));
    EXPECT_TRUE(m_pTestSock->IsPermMode('v'));

    m_pTestChan->SetModes("+sp");
    m_pTestChan->ModeChange("+Y :nick");
    EXPECT_EQ(m_pTestChan->GetModeString(), "+ps");

    const CNick& pNick = m_pTestChan->GetNicks().at("nick");
    EXPECT_TRUE(pNick.HasPerm('!'));
    EXPECT_FALSE(pNick.HasPerm('@'));
}

TEST_F(IRCSockTest, OnPingMessage) {
    CMessage msg(":server PING :arg");
    m_pTestSock->ReadLine(msg.ToString());

    EXPECT_THAT(m_pTestModule->vsHooks, IsEmpty());
    EXPECT_THAT(m_pTestClient->vsLines, IsEmpty());
}

TEST_F(IRCSockTest, OnPongMessage) {
    CMessage msg(":server PONG :arg");
    m_pTestSock->ReadLine(msg.ToString());

    EXPECT_THAT(m_pTestModule->vsHooks, IsEmpty());
    EXPECT_THAT(m_pTestClient->vsLines, IsEmpty());
}

TEST_F(IRCSockTest, OnQuitMessage) {
    CMessage msg(":nobody QUIT :bye");
    m_pTestSock->ReadLine(msg.ToString());

    EXPECT_THAT(m_pTestModule->vsHooks, ElementsAre("OnQuitMessage"));
    EXPECT_THAT(m_pTestModule->vsMessages, ElementsAre(msg.ToString()));
    EXPECT_THAT(m_pTestModule->vNetworks, ElementsAre(m_pTestNetwork));
    EXPECT_THAT(m_pTestModule->vChannels, ElementsAre(nullptr));

    msg.Parse(":nick QUIT :bye");
    m_pTestSock->ReadLine(msg.ToString());

    EXPECT_THAT(m_pTestClient->vsLines, ElementsAre(msg.ToString()));
}

TEST_F(IRCSockTest, OnSendToIRCMessage) {
    CMessage msg(":nick PRIVMSG #chan :hello");
    m_pTestModule->eAction = CModule::HALT;
    m_pTestModule->bSendHooks = true;
    m_pTestSock->PutIRC(msg.ToString());

    EXPECT_THAT(m_pTestModule->vsHooks, ElementsAre("OnSendToIRCMessage"));
    EXPECT_THAT(m_pTestModule->vsMessages, ElementsAre(msg.ToString()));
    EXPECT_THAT(m_pTestModule->vNetworks, ElementsAre(m_pTestNetwork));
    EXPECT_THAT(m_pTestModule->vChannels, ElementsAre(nullptr));
    EXPECT_THAT(m_pTestClient->vsLines, IsEmpty());  // halt

    m_pTestModule->eAction = CModule::CONTINUE;
    m_pTestSock->ReadLine(msg.ToString());

    EXPECT_THAT(m_pTestClient->vsLines, ElementsAre(msg.ToString()));
    m_pTestModule->bSendHooks = false;
}

TEST_F(IRCSockTest, OnTextMessage) {
    CMessage msg(":nick PRIVMSG #chan :hello");
    m_pTestModule->eAction = CModule::HALT;
    m_pTestSock->ReadLine(msg.ToString());

    EXPECT_THAT(m_pTestModule->vsHooks, ElementsAre("OnChanTextMessage"));
    EXPECT_THAT(m_pTestModule->vsMessages, ElementsAre(msg.ToString()));
    EXPECT_THAT(m_pTestModule->vNetworks, ElementsAre(m_pTestNetwork));
    EXPECT_THAT(m_pTestModule->vChannels, ElementsAre(m_pTestChan));
    EXPECT_THAT(m_pTestClient->vsLines, IsEmpty());  // halt

    m_pTestModule->eAction = CModule::CONTINUE;
    m_pTestSock->ReadLine(msg.ToString());

    EXPECT_THAT(m_pTestClient->vsLines, ElementsAre(msg.ToString()));

    m_pTestClient->Reset();
    m_pTestModule->Reset();

    msg.Parse(":nick PRIVMSG me :hello");
    m_pTestModule->eAction = CModule::HALT;
    m_pTestSock->ReadLine(msg.ToString());

    EXPECT_THAT(m_pTestModule->vsHooks, ElementsAre("OnPrivTextMessage"));
    EXPECT_THAT(m_pTestModule->vsMessages, ElementsAre(msg.ToString()));
    EXPECT_THAT(m_pTestModule->vNetworks, ElementsAre(m_pTestNetwork));
    EXPECT_THAT(m_pTestModule->vChannels, ElementsAre(nullptr));
    EXPECT_THAT(m_pTestClient->vsLines, IsEmpty());  // halt

    m_pTestModule->eAction = CModule::CONTINUE;
    m_pTestSock->ReadLine(msg.ToString());

    EXPECT_THAT(m_pTestClient->vsLines, ElementsAre(msg.ToString()));
}

TEST_F(IRCSockTest, OnTopicMessage) {
    CMessage msg(":nick TOPIC #chan :topic");
    m_pTestModule->eAction = CModule::HALT;
    m_pTestSock->ReadLine(msg.ToString());

    EXPECT_THAT(m_pTestModule->vsHooks, ElementsAre("OnTopicMessage"));
    EXPECT_THAT(m_pTestModule->vsMessages, ElementsAre(msg.ToString()));
    EXPECT_THAT(m_pTestModule->vNetworks, ElementsAre(m_pTestNetwork));
    EXPECT_THAT(m_pTestModule->vChannels, ElementsAre(m_pTestChan));
    EXPECT_THAT(m_pTestClient->vsLines, IsEmpty());  // halt

    m_pTestModule->eAction = CModule::CONTINUE;
    m_pTestSock->ReadLine(msg.ToString());

    EXPECT_THAT(m_pTestClient->vsLines, ElementsAre(msg.ToString()));
}

TEST_F(IRCSockTest, OnWallopsMessage) {
    CMessage msg(":blub!dummy@rox-8DBEFE92 WALLOPS :this is a test");
    m_pTestSock->ReadLine(msg.ToString());

    EXPECT_THAT(m_pTestModule->vsHooks,
                IsEmpty());  // no OnWallopsMessage() hook (yet?)
    EXPECT_THAT(m_pTestClient->vsLines, ElementsAre(msg.ToString()));
}

TEST_F(IRCSockTest, ISupport) {
    MCString m1 = {
        {"CHANTYPES", "#"},      {"EXCEPTS", ""},
        {"INVEX", ""},           {"CHANMODES", "eIbq,k,flj,CFLMPQScgimnprstz"},
        {"CHANLIMIT", "#:120"},  {"PREFIX", "(ov)@+"},
        {"MAXLIST", "bqeI:100"}, {"MODES", "4"},
        {"NETWORK", "znc"},      {"KNOCK", ""},
        {"STATUSMSG", "@+"},     {"CALLERID", "g"},
    };

    m_pTestSock->ReadLine(
        ":irc.znc.in 005 user CHANTYPES=# EXCEPTS INVEX "
        "CHANMODES=eIbq,k,flj,CFLMPQScgimnprstz CHANLIMIT=#:120 PREFIX=(ov)@+ "
        "MAXLIST=bqeI:100 MODES=4 NETWORK=znc KNOCK STATUSMSG=@+ CALLERID=g "
        ":are supported by this server");
    EXPECT_THAT(m_pTestSock->GetISupport(), ContainerEq(m1));
    for (const auto& it : m1) {
        EXPECT_EQ(m_pTestSock->GetISupport(it.first), it.second);
    }

    MCString m2 = {
        {"CASEMAPPING", "rfc1459"},
        {"CHARSET", "ascii"},
        {"NICKLEN", "16"},
        {"CHANNELLEN", "50"},
        {"TOPICLEN", "390"},
        {"ETRACE", ""},
        {"CPRIVMSG", ""},
        {"CNOTICE", ""},
        {"DEAF", "D"},
        {"MONITOR", "100"},
        {"FNC", ""},
        {"TARGMAX",
         "NAMES:1,LIST:1,KICK:1,WHOIS:1,PRIVMSG:4,NOTICE:4,ACCEPT:,MONITOR:"},
    };

    MCString m12;
    std::merge(m1.begin(), m1.end(), m2.begin(), m2.end(),
               std::inserter(m12, m12.begin()));

    m_pTestSock->ReadLine(
        ":server 005 user CASEMAPPING=rfc1459 CHARSET=ascii NICKLEN=16 "
        "CHANNELLEN=50 TOPICLEN=390 ETRACE CPRIVMSG CNOTICE DEAF=D MONITOR=100 "
        "FNC "
        "TARGMAX=NAMES:1,LIST:1,KICK:1,WHOIS:1,PRIVMSG:4,NOTICE:4,ACCEPT:,"
        "MONITOR: :are supported by this server");
    EXPECT_THAT(m_pTestSock->GetISupport(), ContainerEq(m12));
    for (const auto& it : m2) {
        EXPECT_EQ(m_pTestSock->GetISupport(it.first), it.second);
    }

    MCString m3 = {
        {"EXTBAN", "$,ajrxz"}, {"WHOX", ""},     {"CLIENTVER", "3.0"},
        {"SAFELIST", ""},      {"ELIST", "CTU"},
    };

    MCString m123;
    std::merge(m12.begin(), m12.end(), m3.begin(), m3.end(),
               std::inserter(m123, m123.begin()));

    m_pTestSock->ReadLine(
        ":server 005 zzzzzz EXTBAN=$,ajrxz WHOX CLIENTVER=3.0 SAFELIST "
        "ELIST=CTU :are supported by this server");
    EXPECT_THAT(m_pTestSock->GetISupport(), ContainerEq(m123));
    for (const auto& it : m3) {
        EXPECT_EQ(m_pTestSock->GetISupport(it.first), it.second);
    }

    EXPECT_EQ(m_pTestSock->GetISupport("FOOBAR", "default"), "default");
    EXPECT_EQ(m_pTestSock->GetISupport("CLIENTVER", "default"), "3.0");
    EXPECT_EQ(m_pTestSock->GetISupport("SAFELIST", "default"), "");
}

TEST_F(IRCSockTest, StatusMsg) {
    m_pTestSock->ReadLine(
        ":irc.znc.in 001 me :Welcome to the Internet Relay Network me");
    m_pTestSock->ReadLine(
        ":irc.znc.in 005 me CHANTYPES=# PREFIX=(ov)@+ STATUSMSG=@+ :are "
        "supported by this server");

    m_pTestUser->SetAutoClearChanBuffer(false);
    m_pTestSock->ReadLine(":someone PRIVMSG @#chan :hello ops");

    EXPECT_EQ(m_pTestChan->GetBuffer().Size(), 1u);

    m_pTestUser->SetTimestampPrepend(false);
    EXPECT_EQ(m_pTestChan->GetBuffer().GetLine(0, *m_pTestClient),
              ":someone PRIVMSG @#chan :hello ops");
}

TEST_F(IRCSockTest, ChanMode) {
    // https://github.com/znc/znc/issues/1684
    m_pTestSock->ReadLine(
        ":irc.znc.in 001 me :Welcome to the Internet Relay Network me");
    m_pTestSock->ReadLine(
        ":irc.znc.in 005 me CHANMODES=be,f,lj,nti "
        ":are supported by this server");
	m_pTestSock->ReadLine(":irc.znc.in 324 me #chan +ntf ");
}