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TestCommandInteraction.cpp
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/*
*
* Copyright (c) 2021 Project CHIP Authors
* All rights reserved.
*
* 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.
*/
/**
* @file
* This file implements unit tests for CHIP Interaction Model Command Interaction
*
*/
#include <cinttypes>
#include <app/AppConfig.h>
#include <app/CommandHandlerImpl.h>
#include <app/InteractionModelEngine.h>
#include <app/data-model/Encode.h>
#include <app/tests/AppTestContext.h>
#include <lib/core/CHIPCore.h>
#include <lib/core/ErrorStr.h>
#include <lib/core/Optional.h>
#include <lib/core/TLV.h>
#include <lib/core/TLVDebug.h>
#include <lib/core/TLVUtilities.h>
#include <lib/support/UnitTestContext.h>
#include <lib/support/UnitTestRegistration.h>
#include <lib/support/logging/CHIPLogging.h>
#include <messaging/ExchangeContext.h>
#include <messaging/ExchangeMgr.h>
#include <messaging/Flags.h>
#include <optional>
#include <platform/CHIPDeviceLayer.h>
#include <protocols/interaction_model/Constants.h>
#include <system/SystemPacketBuffer.h>
#include <system/TLVPacketBufferBackingStore.h>
#include <nlunit-test.h>
using TestContext = chip::Test::AppContext;
using namespace chip::Protocols;
namespace {
void CheckForInvalidAction(nlTestSuite * apSuite, chip::Test::MessageCapturer & messageLog)
{
NL_TEST_ASSERT(apSuite, messageLog.MessageCount() == 1);
NL_TEST_ASSERT(apSuite, messageLog.IsMessageType(0, chip::Protocols::InteractionModel::MsgType::StatusResponse));
CHIP_ERROR status;
NL_TEST_ASSERT(apSuite,
chip::app::StatusResponse::ProcessStatusResponse(std::move(messageLog.MessagePayload(0)), status) ==
CHIP_NO_ERROR);
NL_TEST_ASSERT(apSuite, status == CHIP_IM_GLOBAL_STATUS(InvalidAction));
}
} // anonymous namespace
namespace chip {
namespace {
bool isCommandDispatched = false;
size_t commandDispatchedCount = 0;
bool sendResponse = true;
bool asyncCommand = false;
// Allow us to do test asserts from arbitrary places.
nlTestSuite * gSuite = nullptr;
constexpr EndpointId kTestEndpointId = 1;
constexpr ClusterId kTestClusterId = 3;
constexpr CommandId kTestCommandIdWithData = 4;
constexpr CommandId kTestCommandIdNoData = 5;
constexpr CommandId kTestCommandIdCommandSpecificResponse = 6;
constexpr CommandId kTestCommandIdFillResponseMessage = 7;
constexpr CommandId kTestNonExistCommandId = 0;
const app::CommandSender::TestOnlyMarker kCommandSenderTestOnlyMarker;
class SimpleTLVPayload : public app::DataModel::EncodableToTLV
{
public:
CHIP_ERROR EncodeTo(TLV::TLVWriter & writer, TLV::Tag tag) const override
{
TLV::TLVType outerType;
ReturnErrorOnFailure(writer.StartContainer(tag, TLV::kTLVType_Structure, outerType));
ReturnErrorOnFailure(writer.PutBoolean(chip::TLV::ContextTag(1), true));
return writer.EndContainer(outerType);
}
};
} // namespace
namespace app {
CommandHandler::Handle asyncCommandHandle;
class ForcedSizeBuffer : public app::DataModel::EncodableToTLV
{
public:
ForcedSizeBuffer(uint32_t size)
{
if (mBuffer_.Alloc(size))
{
// No significance with using 0x12, just using a value.
memset(mBuffer_.Get(), 0x12, size);
}
}
// No significance with using 0x12 as the CommandId, just using a value.
static constexpr chip::CommandId GetCommandId() { return 0x12; }
CHIP_ERROR EncodeTo(TLV::TLVWriter & aWriter, TLV::Tag aTag) const override
{
VerifyOrReturnError(mBuffer_, CHIP_ERROR_NO_MEMORY);
TLV::TLVType outerContainerType;
ReturnErrorOnFailure(aWriter.StartContainer(aTag, TLV::kTLVType_Structure, outerContainerType));
ReturnErrorOnFailure(
app::DataModel::Encode(aWriter, TLV::ContextTag(1), ByteSpan(mBuffer_.Get(), mBuffer_.AllocatedSize())));
return aWriter.EndContainer(outerContainerType);
}
private:
chip::Platform::ScopedMemoryBufferWithSize<uint8_t> mBuffer_;
};
enum class ForcedSizeBufferLengthHint
{
kSizeBetween0and255,
kSizeGreaterThan255,
};
InteractionModel::Status ServerClusterCommandExists(const ConcreteCommandPath & aRequestCommandPath)
{
// Mock cluster catalog, only support commands on one cluster on one endpoint.
using InteractionModel::Status;
if (aRequestCommandPath.mEndpointId != kTestEndpointId)
{
return Status::UnsupportedEndpoint;
}
if (aRequestCommandPath.mClusterId != kTestClusterId)
{
return Status::UnsupportedCluster;
}
if (aRequestCommandPath.mCommandId == kTestNonExistCommandId)
{
return Status::UnsupportedCommand;
}
return Status::Success;
}
void DispatchSingleClusterCommand(const ConcreteCommandPath & aRequestCommandPath, chip::TLV::TLVReader & aReader,
CommandHandler * apCommandObj)
{
ChipLogDetail(Controller, "Received Cluster Command: Endpoint=%x Cluster=" ChipLogFormatMEI " Command=" ChipLogFormatMEI,
aRequestCommandPath.mEndpointId, ChipLogValueMEI(aRequestCommandPath.mClusterId),
ChipLogValueMEI(aRequestCommandPath.mCommandId));
// Duplicate what our normal command-field-decode code does, in terms of
// checking for a struct and then entering it before getting the fields.
if (aReader.GetType() != TLV::kTLVType_Structure)
{
apCommandObj->AddStatus(aRequestCommandPath, Protocols::InteractionModel::Status::InvalidAction);
return;
}
TLV::TLVType outerContainerType;
CHIP_ERROR err = aReader.EnterContainer(outerContainerType);
NL_TEST_ASSERT(gSuite, err == CHIP_NO_ERROR);
err = aReader.Next();
if (aRequestCommandPath.mCommandId == kTestCommandIdNoData)
{
NL_TEST_ASSERT(gSuite, err == CHIP_ERROR_END_OF_TLV);
}
else
{
NL_TEST_ASSERT(gSuite, err == CHIP_NO_ERROR);
NL_TEST_ASSERT(gSuite, aReader.GetTag() == TLV::ContextTag(1));
bool val;
err = aReader.Get(val);
NL_TEST_ASSERT(gSuite, err == CHIP_NO_ERROR);
NL_TEST_ASSERT(gSuite, val);
}
err = aReader.ExitContainer(outerContainerType);
NL_TEST_ASSERT(gSuite, err == CHIP_NO_ERROR);
if (asyncCommand)
{
asyncCommandHandle = apCommandObj;
asyncCommand = false;
}
if (sendResponse)
{
if (aRequestCommandPath.mCommandId == kTestCommandIdNoData || aRequestCommandPath.mCommandId == kTestCommandIdWithData)
{
apCommandObj->AddStatus(aRequestCommandPath, Protocols::InteractionModel::Status::Success);
}
else
{
SimpleTLVPayload payloadWriter;
apCommandObj->AddResponse(aRequestCommandPath, aRequestCommandPath.mCommandId, payloadWriter);
}
}
chip::isCommandDispatched = true;
commandDispatchedCount++;
}
class MockCommandSenderCallback : public CommandSender::Callback
{
public:
void OnResponse(chip::app::CommandSender * apCommandSender, const chip::app::ConcreteCommandPath & aPath,
const chip::app::StatusIB & aStatus, chip::TLV::TLVReader * aData) override
{
IgnoreUnusedVariable(apCommandSender);
IgnoreUnusedVariable(aData);
ChipLogDetail(Controller, "Received Cluster Command: Cluster=%" PRIx32 " Command=%" PRIx32 " Endpoint=%x", aPath.mClusterId,
aPath.mCommandId, aPath.mEndpointId);
onResponseCalledTimes++;
}
void OnError(const chip::app::CommandSender * apCommandSender, CHIP_ERROR aError) override
{
ChipLogError(Controller, "OnError happens with %" CHIP_ERROR_FORMAT, aError.Format());
mError = aError;
onErrorCalledTimes++;
mError = aError;
}
void OnDone(chip::app::CommandSender * apCommandSender) override { onFinalCalledTimes++; }
void ResetCounter()
{
onResponseCalledTimes = 0;
onErrorCalledTimes = 0;
onFinalCalledTimes = 0;
}
int onResponseCalledTimes = 0;
int onErrorCalledTimes = 0;
int onFinalCalledTimes = 0;
CHIP_ERROR mError = CHIP_NO_ERROR;
} mockCommandSenderDelegate;
class MockCommandSenderExtendableCallback : public CommandSender::ExtendableCallback
{
public:
void OnResponse(CommandSender * apCommandSender, const CommandSender::ResponseData & aResponseData) override
{
IgnoreUnusedVariable(apCommandSender);
ChipLogDetail(Controller, "Received response for command: Cluster=%" PRIx32 " Command=%" PRIx32 " Endpoint=%x",
aResponseData.path.mClusterId, aResponseData.path.mCommandId, aResponseData.path.mEndpointId);
onResponseCalledTimes++;
}
void OnNoResponse(CommandSender * commandSender, const CommandSender::NoResponseData & aNoResponseData) override
{
ChipLogError(Controller, "NoResponse received for command associated with CommandRef %u", aNoResponseData.commandRef);
onNoResponseCalledTimes++;
}
void OnError(const CommandSender * apCommandSender, const CommandSender::ErrorData & aErrorData) override
{
ChipLogError(Controller, "OnError happens with %" CHIP_ERROR_FORMAT, aErrorData.error.Format());
mError = aErrorData.error;
onErrorCalledTimes++;
}
void OnDone(CommandSender * apCommandSender) override { onFinalCalledTimes++; }
void ResetCounter()
{
onResponseCalledTimes = 0;
onNoResponseCalledTimes = 0;
onErrorCalledTimes = 0;
onFinalCalledTimes = 0;
}
int onResponseCalledTimes = 0;
int onNoResponseCalledTimes = 0;
int onErrorCalledTimes = 0;
int onFinalCalledTimes = 0;
CHIP_ERROR mError = CHIP_NO_ERROR;
} mockCommandSenderExtendedDelegate;
class MockCommandResponder : public CommandHandlerExchangeInterface
{
public:
Messaging::ExchangeContext * GetExchangeContext() const override { return nullptr; }
void HandlingSlowCommand() override {}
Access::SubjectDescriptor GetSubjectDescriptor() const override { return Access::SubjectDescriptor(); }
FabricIndex GetAccessingFabricIndex() const override { return kUndefinedFabricIndex; }
Optional<GroupId> GetGroupId() const override { return NullOptional; }
void AddInvokeResponseToSend(System::PacketBufferHandle && aPacket) override { mChunks.AddToEnd(std::move(aPacket)); }
void ResponseDropped() override { mResponseDropped = true; }
System::PacketBufferHandle mChunks;
bool mResponseDropped = false;
};
class MockCommandHandlerCallback : public CommandHandlerImpl::Callback
{
public:
void OnDone(CommandHandlerImpl & apCommandHandler) final { onFinalCalledTimes++; }
void DispatchCommand(CommandHandlerImpl & apCommandObj, const ConcreteCommandPath & aCommandPath,
TLV::TLVReader & apPayload) final
{
DispatchSingleClusterCommand(aCommandPath, apPayload, &apCommandObj);
}
InteractionModel::Status CommandExists(const ConcreteCommandPath & aCommandPath)
{
return ServerClusterCommandExists(aCommandPath);
}
void ResetCounter() { onFinalCalledTimes = 0; }
int onFinalCalledTimes = 0;
} mockCommandHandlerDelegate;
class TestCommandInteraction
{
public:
static void TestCommandSenderWithWrongState(nlTestSuite * apSuite, void * apContext);
static void TestCommandHandlerWithWrongState(nlTestSuite * apSuite, void * apContext);
static void TestCommandSenderWithSendCommand(nlTestSuite * apSuite, void * apContext);
static void TestCommandHandlerWithSendEmptyCommand(nlTestSuite * apSuite, void * apContext);
static void TestCommandSenderWithProcessReceivedMsg(nlTestSuite * apSuite, void * apContext);
static void TestCommandSenderExtendableApiWithProcessReceivedMsg(nlTestSuite * apSuite, void * apContext);
static void TestCommandSenderExtendableApiWithProcessReceivedMsgContainingInvalidCommandRef(nlTestSuite * apSuite,
void * apContext);
static void TestCommandHandlerWithOnInvokeReceivedNotExistCommand(nlTestSuite * apSuite, void * apContext);
static void TestCommandHandlerEncodeSimpleCommandData(nlTestSuite * apSuite, void * apContext);
static void TestCommandHandlerCommandDataEncoding(nlTestSuite * apSuite, void * apContext);
static void TestCommandHandlerCommandEncodeFailure(nlTestSuite * apSuite, void * apContext);
static void TestCommandInvalidMessage1(nlTestSuite * apSuite, void * apContext);
static void TestCommandInvalidMessage2(nlTestSuite * apSuite, void * apContext);
static void TestCommandInvalidMessage3(nlTestSuite * apSuite, void * apContext);
static void TestCommandInvalidMessage4(nlTestSuite * apSuite, void * apContext);
static void TestCommandHandlerInvalidMessageSync(nlTestSuite * apSuite, void * apContext);
static void TestCommandHandlerCommandEncodeExternalFailure(nlTestSuite * apSuite, void * apContext);
static void TestCommandHandlerEncodeSimpleStatusCode(nlTestSuite * apSuite, void * apContext);
static void TestCommandHandlerWithoutResponderCallingAddStatus(nlTestSuite * apSuite, void * apContext);
static void TestCommandHandlerWithoutResponderCallingAddResponse(nlTestSuite * apSuite, void * apContext);
static void TestCommandHandlerWithoutResponderCallingDirectPrepareFinishCommandApis(nlTestSuite * apSuite, void * apContext);
static void TestCommandHandlerWithOnInvokeReceivedEmptyDataMsg(nlTestSuite * apSuite, void * apContext);
static void TestCommandHandlerRejectMultipleIdenticalCommands(nlTestSuite * apSuite, void * apContext);
static void TestCommandHandlerRejectsMultipleCommandsWithIdenticalCommandRef(nlTestSuite * apSuite, void * apContext);
static void TestCommandHandlerRejectMultipleCommandsWhenHandlerOnlySupportsOne(nlTestSuite * apSuite, void * apContext);
static void TestCommandHandlerAcceptMultipleCommands(nlTestSuite * apSuite, void * apContext);
static void TestCommandSender_ValidateSecondLargeAddRequestDataRollbacked(nlTestSuite * apSuite, void * apContext);
static void TestCommandHandler_FillUpInvokeResponseMessageWhereSecondResponseIsStatusResponse(nlTestSuite * apSuite,
void * apContext);
static void TestCommandHandler_FillUpInvokeResponseMessageWhereSecondResponseIsDataResponsePrimative(nlTestSuite * apSuite,
void * apContext);
static void TestCommandHandler_FillUpInvokeResponseMessageWhereSecondResponseIsDataResponse(nlTestSuite * apSuite,
void * apContext);
#if CONFIG_BUILD_FOR_HOST_UNIT_TEST
static void TestCommandHandlerReleaseWithExchangeClosed(nlTestSuite * apSuite, void * apContext);
#endif
static void TestCommandSenderLegacyCallbackUnsupportedCommand(nlTestSuite * apSuite, void * apContext);
static void TestCommandSenderExtendableCallbackUnsupportedCommand(nlTestSuite * apSuite, void * apContext);
static void TestCommandSenderLegacyCallbackBuildingBatchCommandFails(nlTestSuite * apSuite, void * apContext);
static void TestCommandSenderExtendableCallbackBuildingBatchDuplicateCommandRefFails(nlTestSuite * apSuite, void * apContext);
static void TestCommandSenderExtendableCallbackBuildingBatchCommandSuccess(nlTestSuite * apSuite, void * apContext);
static void TestCommandSenderCommandSuccessResponseFlow(nlTestSuite * apSuite, void * apContext);
static void TestCommandSenderCommandAsyncSuccessResponseFlow(nlTestSuite * apSuite, void * apContext);
static void TestCommandSenderCommandFailureResponseFlow(nlTestSuite * apSuite, void * apContext);
static void TestCommandSenderCommandSpecificResponseFlow(nlTestSuite * apSuite, void * apContext);
static void TestCommandSenderAbruptDestruction(nlTestSuite * apSuite, void * apContext);
static size_t GetNumActiveCommandResponderObjects()
{
return chip::app::InteractionModelEngine::GetInstance()->mCommandResponderObjs.Allocated();
}
private:
/**
* With the introduction of batch invoke commands, CommandHandler keeps track of incoming
* ConcreteCommandPath and the associated CommandRefs. These are normally populated
* as part of OnInvokeCommandRequest from the incoming request. For some unit tests where
* we want to test APIs that cluster code uses, we need to inject entries into the
* CommandPathRegistry directly.
*/
class CommandHandlerWithUnrespondedCommand : public app::CommandHandlerImpl
{
public:
CommandHandlerWithUnrespondedCommand(CommandHandlerImpl::Callback * apCallback,
const ConcreteCommandPath & aRequestCommandPath, const Optional<uint16_t> & aRef) :
CommandHandlerImpl(apCallback)
{
GetCommandPathRegistry().Add(aRequestCommandPath, aRef.std_optional());
SetExchangeInterface(&mMockCommandResponder);
}
MockCommandResponder mMockCommandResponder;
using app::CommandHandler::AddResponse;
};
// Generate an invoke request. If aCommandId is kTestCommandIdWithData, a
// payload will be included. Otherwise no payload will be included.
static void GenerateInvokeRequest(nlTestSuite * apSuite, void * apContext, System::PacketBufferHandle & aPayload,
bool aIsTimedRequest, CommandId aCommandId, ClusterId aClusterId = kTestClusterId,
EndpointId aEndpointId = kTestEndpointId);
// Generate an invoke response. If aCommandId is kTestCommandIdWithData, a
// payload will be included. Otherwise no payload will be included.
static void GenerateInvokeResponse(nlTestSuite * apSuite, void * apContext, System::PacketBufferHandle & aPayload,
CommandId aCommandId, ClusterId aClusterId = kTestClusterId,
EndpointId aEndpointId = kTestEndpointId,
std::optional<uint16_t> aCommandRef = std::nullopt);
static void AddInvokeRequestData(nlTestSuite * apSuite, void * apContext, CommandSender * apCommandSender,
CommandId aCommandId = kTestCommandIdWithData);
static void AddInvalidInvokeRequestData(nlTestSuite * apSuite, void * apContext, CommandSender * apCommandSender,
CommandId aCommandId = kTestCommandIdWithData);
static void AddInvokeResponseData(nlTestSuite * apSuite, void * apContext, CommandHandler * apCommandHandler,
bool aNeedStatusCode, CommandId aResponseCommandId = kTestCommandIdWithData,
CommandId aRequestCommandId = kTestCommandIdWithData);
static uint32_t GetAddResponseDataOverheadSizeForPath(nlTestSuite * apSuite, const ConcreteCommandPath & aRequestCommandPath,
ForcedSizeBufferLengthHint aBufferSizeHint);
static void FillCurrentInvokeResponseBuffer(nlTestSuite * apSuite, CommandHandlerImpl * apCommandHandler,
const ConcreteCommandPath & aRequestCommandPath, uint32_t aSizeToLeaveInBuffer);
static void ValidateCommandHandlerEncodeInvokeResponseMessage(nlTestSuite * apSuite, void * apContext, bool aNeedStatusCode);
};
class TestExchangeDelegate : public Messaging::ExchangeDelegate
{
CHIP_ERROR OnMessageReceived(Messaging::ExchangeContext * ec, const PayloadHeader & payloadHeader,
System::PacketBufferHandle && payload) override
{
return CHIP_NO_ERROR;
}
void OnResponseTimeout(Messaging::ExchangeContext * ec) override {}
};
CommandPathParams MakeTestCommandPath(CommandId aCommandId = kTestCommandIdWithData)
{
return CommandPathParams(kTestEndpointId, 0, kTestClusterId, aCommandId, (chip::app::CommandPathFlags::kEndpointIdValid));
}
void TestCommandInteraction::GenerateInvokeRequest(nlTestSuite * apSuite, void * apContext, System::PacketBufferHandle & aPayload,
bool aIsTimedRequest, CommandId aCommandId, ClusterId aClusterId,
EndpointId aEndpointId)
{
CHIP_ERROR err = CHIP_NO_ERROR;
InvokeRequestMessage::Builder invokeRequestMessageBuilder;
System::PacketBufferTLVWriter writer;
writer.Init(std::move(aPayload));
err = invokeRequestMessageBuilder.Init(&writer);
NL_TEST_ASSERT(apSuite, err == CHIP_NO_ERROR);
invokeRequestMessageBuilder.SuppressResponse(true).TimedRequest(aIsTimedRequest);
InvokeRequests::Builder & invokeRequests = invokeRequestMessageBuilder.CreateInvokeRequests();
NL_TEST_ASSERT(apSuite, invokeRequestMessageBuilder.GetError() == CHIP_NO_ERROR);
CommandDataIB::Builder & commandDataIBBuilder = invokeRequests.CreateCommandData();
NL_TEST_ASSERT(apSuite, invokeRequests.GetError() == CHIP_NO_ERROR);
CommandPathIB::Builder & commandPathBuilder = commandDataIBBuilder.CreatePath();
NL_TEST_ASSERT(apSuite, commandDataIBBuilder.GetError() == CHIP_NO_ERROR);
commandPathBuilder.EndpointId(aEndpointId).ClusterId(aClusterId).CommandId(aCommandId).EndOfCommandPathIB();
NL_TEST_ASSERT(apSuite, commandPathBuilder.GetError() == CHIP_NO_ERROR);
if (aCommandId == kTestCommandIdWithData)
{
chip::TLV::TLVWriter * pWriter = commandDataIBBuilder.GetWriter();
chip::TLV::TLVType dummyType = chip::TLV::kTLVType_NotSpecified;
err = pWriter->StartContainer(chip::TLV::ContextTag(chip::to_underlying(CommandDataIB::Tag::kFields)),
chip::TLV::kTLVType_Structure, dummyType);
NL_TEST_ASSERT(apSuite, err == CHIP_NO_ERROR);
err = pWriter->PutBoolean(chip::TLV::ContextTag(1), true);
NL_TEST_ASSERT(apSuite, err == CHIP_NO_ERROR);
err = pWriter->EndContainer(dummyType);
NL_TEST_ASSERT(apSuite, err == CHIP_NO_ERROR);
}
commandDataIBBuilder.EndOfCommandDataIB();
NL_TEST_ASSERT(apSuite, commandDataIBBuilder.GetError() == CHIP_NO_ERROR);
invokeRequests.EndOfInvokeRequests();
NL_TEST_ASSERT(apSuite, invokeRequests.GetError() == CHIP_NO_ERROR);
invokeRequestMessageBuilder.EndOfInvokeRequestMessage();
NL_TEST_ASSERT(apSuite, invokeRequestMessageBuilder.GetError() == CHIP_NO_ERROR);
err = writer.Finalize(&aPayload);
NL_TEST_ASSERT(apSuite, err == CHIP_NO_ERROR);
}
void TestCommandInteraction::GenerateInvokeResponse(nlTestSuite * apSuite, void * apContext, System::PacketBufferHandle & aPayload,
CommandId aCommandId, ClusterId aClusterId, EndpointId aEndpointId,
std::optional<uint16_t> aCommandRef)
{
CHIP_ERROR err = CHIP_NO_ERROR;
InvokeResponseMessage::Builder invokeResponseMessageBuilder;
System::PacketBufferTLVWriter writer;
writer.Init(std::move(aPayload));
err = invokeResponseMessageBuilder.Init(&writer);
NL_TEST_ASSERT(apSuite, err == CHIP_NO_ERROR);
invokeResponseMessageBuilder.SuppressResponse(true);
InvokeResponseIBs::Builder & invokeResponses = invokeResponseMessageBuilder.CreateInvokeResponses();
NL_TEST_ASSERT(apSuite, invokeResponseMessageBuilder.GetError() == CHIP_NO_ERROR);
InvokeResponseIB::Builder & invokeResponseIBBuilder = invokeResponses.CreateInvokeResponse();
NL_TEST_ASSERT(apSuite, invokeResponses.GetError() == CHIP_NO_ERROR);
CommandDataIB::Builder & commandDataIBBuilder = invokeResponseIBBuilder.CreateCommand();
NL_TEST_ASSERT(apSuite, commandDataIBBuilder.GetError() == CHIP_NO_ERROR);
CommandPathIB::Builder & commandPathBuilder = commandDataIBBuilder.CreatePath();
NL_TEST_ASSERT(apSuite, commandDataIBBuilder.GetError() == CHIP_NO_ERROR);
commandPathBuilder.EndpointId(aEndpointId).ClusterId(aClusterId).CommandId(aCommandId).EndOfCommandPathIB();
NL_TEST_ASSERT(apSuite, commandPathBuilder.GetError() == CHIP_NO_ERROR);
if (aCommandId == kTestCommandIdWithData)
{
chip::TLV::TLVWriter * pWriter = commandDataIBBuilder.GetWriter();
chip::TLV::TLVType dummyType = chip::TLV::kTLVType_NotSpecified;
err = pWriter->StartContainer(chip::TLV::ContextTag(chip::to_underlying(CommandDataIB::Tag::kFields)),
chip::TLV::kTLVType_Structure, dummyType);
NL_TEST_ASSERT(apSuite, err == CHIP_NO_ERROR);
err = pWriter->PutBoolean(chip::TLV::ContextTag(1), true);
NL_TEST_ASSERT(apSuite, err == CHIP_NO_ERROR);
err = pWriter->EndContainer(dummyType);
NL_TEST_ASSERT(apSuite, err == CHIP_NO_ERROR);
}
if (aCommandRef.has_value())
{
NL_TEST_ASSERT(apSuite, commandDataIBBuilder.Ref(*aCommandRef) == CHIP_NO_ERROR);
}
commandDataIBBuilder.EndOfCommandDataIB();
NL_TEST_ASSERT(apSuite, commandDataIBBuilder.GetError() == CHIP_NO_ERROR);
invokeResponseIBBuilder.EndOfInvokeResponseIB();
NL_TEST_ASSERT(apSuite, invokeResponseIBBuilder.GetError() == CHIP_NO_ERROR);
invokeResponses.EndOfInvokeResponses();
NL_TEST_ASSERT(apSuite, invokeResponses.GetError() == CHIP_NO_ERROR);
invokeResponseMessageBuilder.EndOfInvokeResponseMessage();
NL_TEST_ASSERT(apSuite, invokeResponseMessageBuilder.GetError() == CHIP_NO_ERROR);
err = writer.Finalize(&aPayload);
NL_TEST_ASSERT(apSuite, err == CHIP_NO_ERROR);
}
void TestCommandInteraction::AddInvokeRequestData(nlTestSuite * apSuite, void * apContext, CommandSender * apCommandSender,
CommandId aCommandId)
{
CHIP_ERROR err = CHIP_NO_ERROR;
auto commandPathParams = MakeTestCommandPath(aCommandId);
err = apCommandSender->PrepareCommand(commandPathParams);
NL_TEST_ASSERT(apSuite, err == CHIP_NO_ERROR);
chip::TLV::TLVWriter * writer = apCommandSender->GetCommandDataIBTLVWriter();
err = writer->PutBoolean(chip::TLV::ContextTag(1), true);
NL_TEST_ASSERT(apSuite, err == CHIP_NO_ERROR);
err = apCommandSender->FinishCommand();
NL_TEST_ASSERT(apSuite, err == CHIP_NO_ERROR);
}
void TestCommandInteraction::AddInvalidInvokeRequestData(nlTestSuite * apSuite, void * apContext, CommandSender * apCommandSender,
CommandId aCommandId)
{
CHIP_ERROR err = CHIP_NO_ERROR;
auto commandPathParams = MakeTestCommandPath(aCommandId);
err = apCommandSender->PrepareCommand(commandPathParams);
NL_TEST_ASSERT(apSuite, err == CHIP_NO_ERROR);
chip::TLV::TLVWriter * writer = apCommandSender->GetCommandDataIBTLVWriter();
err = writer->PutBoolean(chip::TLV::ContextTag(1), true);
NL_TEST_ASSERT(apSuite, err == CHIP_NO_ERROR);
apCommandSender->MoveToState(CommandSender::State::AddedCommand);
}
void TestCommandInteraction::AddInvokeResponseData(nlTestSuite * apSuite, void * apContext, CommandHandler * apCommandHandler,
bool aNeedStatusCode, CommandId aResponseCommandId, CommandId aRequestCommandId)
{
constexpr EndpointId kTestEndpointId = 1;
constexpr ClusterId kTestClusterId = 3;
ConcreteCommandPath requestCommandPath = { kTestEndpointId, kTestClusterId, aRequestCommandId };
if (aNeedStatusCode)
{
apCommandHandler->AddStatus(requestCommandPath, Protocols::InteractionModel::Status::Success);
}
else
{
SimpleTLVPayload payloadWriter;
CHIP_ERROR err = apCommandHandler->AddResponseData(requestCommandPath, aResponseCommandId, payloadWriter);
NL_TEST_ASSERT(apSuite, err == CHIP_NO_ERROR);
}
}
uint32_t TestCommandInteraction::GetAddResponseDataOverheadSizeForPath(nlTestSuite * apSuite,
const ConcreteCommandPath & aRequestCommandPath,
ForcedSizeBufferLengthHint aBufferSizeHint)
{
BasicCommandPathRegistry<4> basicCommandPathRegistry;
MockCommandResponder mockCommandResponder;
CommandHandlerImpl::TestOnlyOverrides testOnlyOverrides{ &basicCommandPathRegistry, &mockCommandResponder };
CommandHandlerImpl commandHandler(testOnlyOverrides, &mockCommandHandlerDelegate);
commandHandler.mReserveSpaceForMoreChunkMessages = true;
ConcreteCommandPath requestCommandPath1 = { kTestEndpointId, kTestClusterId, kTestCommandIdFillResponseMessage };
ConcreteCommandPath requestCommandPath2 = { kTestEndpointId, kTestClusterId, kTestCommandIdCommandSpecificResponse };
CHIP_ERROR err = basicCommandPathRegistry.Add(requestCommandPath1, std::make_optional<uint16_t>(static_cast<uint16_t>(1)));
NL_TEST_ASSERT(apSuite, err == CHIP_NO_ERROR);
err = basicCommandPathRegistry.Add(requestCommandPath2, std::make_optional<uint16_t>(static_cast<uint16_t>(2)));
NL_TEST_ASSERT(apSuite, err == CHIP_NO_ERROR);
err = commandHandler.AllocateBuffer();
NL_TEST_ASSERT(apSuite, err == CHIP_NO_ERROR);
uint32_t remainingSizeBefore = commandHandler.mInvokeResponseBuilder.GetWriter()->GetRemainingFreeLength();
// When ForcedSizeBuffer exceeds 255, an extra byte is needed for length, affecting the overhead size required by
// AddResponseData. In order to have this accounted for in overhead calculation we set the length to be 256.
uint32_t sizeOfForcedSizeBuffer = aBufferSizeHint == ForcedSizeBufferLengthHint::kSizeGreaterThan255 ? 256 : 0;
ForcedSizeBuffer responseData(sizeOfForcedSizeBuffer);
err = commandHandler.AddResponseData(aRequestCommandPath, responseData.GetCommandId(), responseData);
NL_TEST_ASSERT(apSuite, err == CHIP_NO_ERROR);
uint32_t remainingSizeAfter = commandHandler.mInvokeResponseBuilder.GetWriter()->GetRemainingFreeLength();
uint32_t delta = remainingSizeBefore - remainingSizeAfter - sizeOfForcedSizeBuffer;
return delta;
}
void TestCommandInteraction::FillCurrentInvokeResponseBuffer(nlTestSuite * apSuite, CommandHandlerImpl * apCommandHandler,
const ConcreteCommandPath & aRequestCommandPath,
uint32_t aSizeToLeaveInBuffer)
{
CHIP_ERROR err = CHIP_NO_ERROR;
err = apCommandHandler->AllocateBuffer();
NL_TEST_ASSERT(apSuite, err == CHIP_NO_ERROR);
uint32_t remainingSize = apCommandHandler->mInvokeResponseBuilder.GetWriter()->GetRemainingFreeLength();
// AddResponseData's overhead calculation depends on the size of ForcedSizeBuffer. If the buffer exceeds 255 bytes, an extra
// length byte is required. Since tests using FillCurrentInvokeResponseBuffer currently end up with sizeToFill > 255, we
// inform the calculation of this expectation. Nonetheless, we also validate this assumption for correctness.
ForcedSizeBufferLengthHint bufferSizeHint = ForcedSizeBufferLengthHint::kSizeGreaterThan255;
uint32_t overheadSizeNeededForAddingResponse =
GetAddResponseDataOverheadSizeForPath(apSuite, aRequestCommandPath, bufferSizeHint);
NL_TEST_ASSERT(apSuite, remainingSize > (aSizeToLeaveInBuffer + overheadSizeNeededForAddingResponse));
uint32_t sizeToFill = remainingSize - aSizeToLeaveInBuffer - overheadSizeNeededForAddingResponse;
// Validating assumption. If this fails, it means overheadSizeNeededForAddingResponse is likely too large.
NL_TEST_ASSERT(apSuite, sizeToFill >= 256);
ForcedSizeBuffer responseData(sizeToFill);
err = apCommandHandler->AddResponseData(aRequestCommandPath, responseData.GetCommandId(), responseData);
NL_TEST_ASSERT(apSuite, err == CHIP_NO_ERROR);
}
void TestCommandInteraction::TestCommandSenderWithWrongState(nlTestSuite * apSuite, void * apContext)
{
TestContext & ctx = *static_cast<TestContext *>(apContext);
CHIP_ERROR err = CHIP_NO_ERROR;
app::CommandSender commandSender(&mockCommandSenderDelegate, &ctx.GetExchangeManager());
NL_TEST_ASSERT(apSuite, err == CHIP_NO_ERROR);
err = commandSender.SendCommandRequest(ctx.GetSessionBobToAlice());
NL_TEST_ASSERT(apSuite, err == CHIP_ERROR_INCORRECT_STATE);
}
void TestCommandInteraction::TestCommandHandlerWithWrongState(nlTestSuite * apSuite, void * apContext)
{
CHIP_ERROR err = CHIP_NO_ERROR;
ConcreteCommandPath requestCommandPath = { kTestEndpointId, kTestClusterId, kTestCommandIdNoData };
ConcreteCommandPath responseCommandPath = { kTestEndpointId, kTestClusterId, kTestCommandIdNoData };
CommandHandlerWithUnrespondedCommand commandHandler(&mockCommandHandlerDelegate, requestCommandPath,
/* aRef = */ NullOptional);
{
// This simulates how cluster would call CommandHandler APIs synchronously. There would
// be handle already acquired on the callers behalf.
CommandHandler::Handle handle(&commandHandler);
const CommandHandlerImpl::InvokeResponseParameters prepareParams(requestCommandPath);
err = commandHandler.PrepareInvokeResponseCommand(responseCommandPath, prepareParams);
NL_TEST_ASSERT(apSuite, err == CHIP_NO_ERROR);
}
NL_TEST_ASSERT(apSuite, commandHandler.mMockCommandResponder.mChunks.IsNull());
}
void TestCommandInteraction::TestCommandSenderWithSendCommand(nlTestSuite * apSuite, void * apContext)
{
TestContext & ctx = *static_cast<TestContext *>(apContext);
CHIP_ERROR err = CHIP_NO_ERROR;
app::CommandSender commandSender(&mockCommandSenderDelegate, &ctx.GetExchangeManager());
System::PacketBufferHandle buf = System::PacketBufferHandle::New(System::PacketBuffer::kMaxSize);
AddInvokeRequestData(apSuite, apContext, &commandSender);
err = commandSender.SendCommandRequest(ctx.GetSessionBobToAlice());
NL_TEST_ASSERT(apSuite, err == CHIP_NO_ERROR);
ctx.DrainAndServiceIO();
GenerateInvokeResponse(apSuite, apContext, buf, kTestCommandIdWithData);
bool moreChunkedMessages = false;
err = commandSender.ProcessInvokeResponse(std::move(buf), moreChunkedMessages);
NL_TEST_ASSERT(apSuite, err == CHIP_NO_ERROR);
NL_TEST_ASSERT(apSuite, moreChunkedMessages == false);
}
void TestCommandInteraction::TestCommandHandlerWithSendEmptyCommand(nlTestSuite * apSuite, void * apContext)
{
CHIP_ERROR err = CHIP_NO_ERROR;
ConcreteCommandPath requestCommandPath = { kTestEndpointId, kTestClusterId, kTestCommandIdNoData };
ConcreteCommandPath responseCommandPath = { kTestEndpointId, kTestClusterId, kTestCommandIdNoData };
CommandHandlerWithUnrespondedCommand commandHandler(&mockCommandHandlerDelegate, requestCommandPath,
/* aRef = */ NullOptional);
{
// This simulates how cluster would call CommandHandler APIs synchronously. There would
// be handle already acquired on the callers behalf.
CommandHandler::Handle handle(&commandHandler);
const CommandHandlerImpl::InvokeResponseParameters prepareParams(requestCommandPath);
err = commandHandler.PrepareInvokeResponseCommand(responseCommandPath, prepareParams);
NL_TEST_ASSERT(apSuite, err == CHIP_NO_ERROR);
err = commandHandler.FinishCommand();
NL_TEST_ASSERT(apSuite, err == CHIP_NO_ERROR);
}
NL_TEST_ASSERT(apSuite, !commandHandler.mMockCommandResponder.mChunks.IsNull());
}
void TestCommandInteraction::TestCommandSenderWithProcessReceivedMsg(nlTestSuite * apSuite, void * apContext)
{
TestContext & ctx = *static_cast<TestContext *>(apContext);
CHIP_ERROR err = CHIP_NO_ERROR;
app::CommandSender commandSender(&mockCommandSenderDelegate, &ctx.GetExchangeManager());
System::PacketBufferHandle buf = System::PacketBufferHandle::New(System::PacketBuffer::kMaxSize);
GenerateInvokeResponse(apSuite, apContext, buf, kTestCommandIdWithData);
bool moreChunkedMessages = false;
err = commandSender.ProcessInvokeResponse(std::move(buf), moreChunkedMessages);
NL_TEST_ASSERT(apSuite, err == CHIP_NO_ERROR);
NL_TEST_ASSERT(apSuite, moreChunkedMessages == false);
}
void TestCommandInteraction::TestCommandSenderExtendableApiWithProcessReceivedMsg(nlTestSuite * apSuite, void * apContext)
{
TestContext & ctx = *static_cast<TestContext *>(apContext);
CHIP_ERROR err = CHIP_NO_ERROR;
mockCommandSenderExtendedDelegate.ResetCounter();
PendingResponseTrackerImpl pendingResponseTracker;
app::CommandSender commandSender(kCommandSenderTestOnlyMarker, &mockCommandSenderExtendedDelegate, &ctx.GetExchangeManager(),
&pendingResponseTracker);
uint16_t mockCommandRef = 1;
pendingResponseTracker.Add(mockCommandRef);
commandSender.mFinishedCommandCount = 1;
System::PacketBufferHandle buf = System::PacketBufferHandle::New(System::PacketBuffer::kMaxSize);
GenerateInvokeResponse(apSuite, apContext, buf, kTestCommandIdWithData);
bool moreChunkedMessages = false;
err = commandSender.ProcessInvokeResponse(std::move(buf), moreChunkedMessages);
NL_TEST_ASSERT(apSuite, err == CHIP_NO_ERROR);
NL_TEST_ASSERT(apSuite, moreChunkedMessages == false);
commandSender.FlushNoCommandResponse();
NL_TEST_ASSERT(apSuite,
mockCommandSenderExtendedDelegate.onResponseCalledTimes == 1 &&
mockCommandSenderExtendedDelegate.onFinalCalledTimes == 0 &&
mockCommandSenderExtendedDelegate.onNoResponseCalledTimes == 0 &&
mockCommandSenderExtendedDelegate.onErrorCalledTimes == 0);
}
void TestCommandInteraction::TestCommandSenderExtendableApiWithProcessReceivedMsgContainingInvalidCommandRef(nlTestSuite * apSuite,
void * apContext)
{
TestContext & ctx = *static_cast<TestContext *>(apContext);
CHIP_ERROR err = CHIP_NO_ERROR;
mockCommandSenderExtendedDelegate.ResetCounter();
PendingResponseTrackerImpl pendingResponseTracker;
app::CommandSender commandSender(kCommandSenderTestOnlyMarker, &mockCommandSenderExtendedDelegate, &ctx.GetExchangeManager(),
&pendingResponseTracker);
uint16_t mockCommandRef = 1;
pendingResponseTracker.Add(mockCommandRef);
commandSender.mFinishedCommandCount = 1;
System::PacketBufferHandle buf = System::PacketBufferHandle::New(System::PacketBuffer::kMaxSize);
uint16_t invalidResponseCommandRef = 2;
GenerateInvokeResponse(apSuite, apContext, buf, kTestCommandIdWithData, kTestClusterId, kTestEndpointId,
std::make_optional(invalidResponseCommandRef));
bool moreChunkedMessages = false;
err = commandSender.ProcessInvokeResponse(std::move(buf), moreChunkedMessages);
NL_TEST_ASSERT(apSuite, err == CHIP_ERROR_KEY_NOT_FOUND);
NL_TEST_ASSERT(apSuite, moreChunkedMessages == false);
commandSender.FlushNoCommandResponse();
NL_TEST_ASSERT(apSuite,
mockCommandSenderExtendedDelegate.onResponseCalledTimes == 0 &&
mockCommandSenderExtendedDelegate.onFinalCalledTimes == 0 &&
mockCommandSenderExtendedDelegate.onNoResponseCalledTimes == 1 &&
mockCommandSenderExtendedDelegate.onErrorCalledTimes == 0);
}
void TestCommandInteraction::ValidateCommandHandlerEncodeInvokeResponseMessage(nlTestSuite * apSuite, void * apContext,
bool aNeedStatusCode)
{
chip::app::ConcreteCommandPath requestCommandPath(kTestEndpointId, kTestClusterId, kTestCommandIdWithData);
CommandHandlerWithUnrespondedCommand commandHandler(&mockCommandHandlerDelegate, requestCommandPath,
/* aRef = */ NullOptional);
{
// This simulates how cluster would call CommandHandler APIs synchronously. There would
// be handle already acquired on the callers behalf.
CommandHandler::Handle handle(&commandHandler);
AddInvokeResponseData(apSuite, apContext, &commandHandler, aNeedStatusCode);
}
NL_TEST_ASSERT(apSuite, !commandHandler.mMockCommandResponder.mChunks.IsNull());
}
void TestCommandInteraction::TestCommandHandlerEncodeSimpleCommandData(nlTestSuite * apSuite, void * apContext)
{
// Send response which has simple command data and command path
ValidateCommandHandlerEncodeInvokeResponseMessage(apSuite, apContext, false /*aNeedStatusCode=false*/);
}
struct Fields
{
static constexpr chip::CommandId GetCommandId() { return 4; }
CHIP_ERROR Encode(TLV::TLVWriter & aWriter, TLV::Tag aTag) const
{
TLV::TLVType outerContainerType;
ReturnErrorOnFailure(aWriter.StartContainer(aTag, TLV::kTLVType_Structure, outerContainerType));
ReturnErrorOnFailure(aWriter.PutBoolean(TLV::ContextTag(1), true));
return aWriter.EndContainer(outerContainerType);
}
};
struct BadFields
{
static constexpr chip::CommandId GetCommandId() { return 4; }
CHIP_ERROR Encode(TLV::TLVWriter & aWriter, TLV::Tag aTag) const
{
TLV::TLVType outerContainerType;
uint8_t data[36] = { 0 };
ReturnErrorOnFailure(aWriter.StartContainer(aTag, TLV::kTLVType_Structure, outerContainerType));
// Just encode something bad to return a failure state here.
for (uint8_t i = 1; i < UINT8_MAX; i++)
{
ReturnErrorOnFailure(app::DataModel::Encode(aWriter, TLV::ContextTag(i), ByteSpan(data)));
}
return aWriter.EndContainer(outerContainerType);
}
};
void TestCommandInteraction::TestCommandHandlerCommandDataEncoding(nlTestSuite * apSuite, void * apContext)
{
auto path = MakeTestCommandPath();
ConcreteCommandPath requestCommandPath(path.mEndpointId, path.mClusterId, path.mCommandId);
CommandHandlerWithUnrespondedCommand commandHandler(nullptr, requestCommandPath, /* aRef = */ NullOptional);
{
// This simulates how cluster would call CommandHandler APIs synchronously. There would
// be handle already acquired on the callers behalf.
CommandHandler::Handle handle(&commandHandler);
commandHandler.AddResponse(requestCommandPath, Fields());
}
NL_TEST_ASSERT(apSuite, !commandHandler.mMockCommandResponder.mChunks.IsNull());
}
void TestCommandInteraction::TestCommandHandlerCommandEncodeFailure(nlTestSuite * apSuite, void * apContext)
{
auto path = MakeTestCommandPath();
auto requestCommandPath = ConcreteCommandPath(path.mEndpointId, path.mClusterId, path.mCommandId);
CommandHandlerWithUnrespondedCommand commandHandler(nullptr, requestCommandPath, NullOptional);
{
// This simulates how cluster would call CommandHandler APIs synchronously. There would
// be handle already acquired on the callers behalf.
CommandHandler::Handle handle(&commandHandler);
commandHandler.AddResponse(requestCommandPath, BadFields());
}
NL_TEST_ASSERT(apSuite, !commandHandler.mMockCommandResponder.mChunks.IsNull());
}
/**
* Helper macro we can use to pretend we got a reply from the server in cases
* when the reply was actually dropped due to us not wanting the client's state
* machine to advance.
*
* When this macro is used, the client has sent a message and is waiting for an
* ack+response, and the server has sent a response that got dropped and is
* waiting for an ack (and maybe a response).
*
* What this macro then needs to do is:
*
* 1. Pretend that the client got an ack (and clear out the corresponding ack
* state).
* 2. Pretend that the client got a message from the server, with the id of the
* message that was dropped, which requires an ack, so the client will send
* that ack in its next message.
*
* This is a macro so we get useful line numbers on assertion failures
*/
#define PretendWeGotReplyFromServer(aSuite, aContext, aClientExchange) \
{ \
Messaging::ReliableMessageMgr * localRm = (aContext).GetExchangeManager().GetReliableMessageMgr(); \
Messaging::ExchangeContext * localExchange = aClientExchange; \
NL_TEST_ASSERT(aSuite, localRm->TestGetCountRetransTable() == 2); \
\
localRm->ClearRetransTable(localExchange); \
NL_TEST_ASSERT(aSuite, localRm->TestGetCountRetransTable() == 1); \
\
localRm->EnumerateRetransTable([localExchange](auto * entry) { \
localExchange->SetPendingPeerAckMessageCounter(entry->retainedBuf.GetMessageCounter()); \
return Loop::Break; \
}); \
}
// Command Sender sends invoke request, command handler drops invoke response, then test injects status response message with
// busy to client, client sends out a status response with invalid action.
void TestCommandInteraction::TestCommandInvalidMessage1(nlTestSuite * apSuite, void * apContext)
{
TestContext & ctx = *static_cast<TestContext *>(apContext);
CHIP_ERROR err = CHIP_NO_ERROR;
mockCommandSenderDelegate.ResetCounter();
app::CommandSender commandSender(&mockCommandSenderDelegate, &ctx.GetExchangeManager());
AddInvokeRequestData(apSuite, apContext, &commandSender);
asyncCommand = false;
ctx.GetLoopback().mSentMessageCount = 0;
ctx.GetLoopback().mNumMessagesToDrop = 1;
ctx.GetLoopback().mNumMessagesToAllowBeforeDropping = 1;
err = commandSender.SendCommandRequest(ctx.GetSessionBobToAlice());
NL_TEST_ASSERT(apSuite, err == CHIP_NO_ERROR);
ctx.DrainAndServiceIO();
NL_TEST_ASSERT(apSuite, ctx.GetLoopback().mSentMessageCount == 2);
NL_TEST_ASSERT(apSuite, ctx.GetLoopback().mDroppedMessageCount == 1);
NL_TEST_ASSERT(apSuite,
mockCommandSenderDelegate.onResponseCalledTimes == 0 && mockCommandSenderDelegate.onFinalCalledTimes == 0 &&
mockCommandSenderDelegate.onErrorCalledTimes == 0);
NL_TEST_ASSERT(apSuite, GetNumActiveCommandResponderObjects() == 0);
System::PacketBufferHandle msgBuf = System::PacketBufferHandle::New(kMaxSecureSduLengthBytes);
NL_TEST_ASSERT(apSuite, !msgBuf.IsNull());
System::PacketBufferTLVWriter writer;
writer.Init(std::move(msgBuf));