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Account for the retry delay booster in unit test (#27519)
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* Account for the retry delay booster in unit test

* Update comment
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@arkq @pull
arkq authored and pull[bot] committed Oct 17, 2023
1 parent 3c81024 commit 5368857
Showing 1 changed file with 36 additions and 27 deletions.
63 changes: 36 additions & 27 deletions src/messaging/tests/TestReliableMessageProtocol.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -29,6 +29,7 @@
#include <lib/support/UnitTestUtils.h>
#include <messaging/ReliableMessageContext.h>
#include <messaging/ReliableMessageMgr.h>
#include <messaging/ReliableMessageProtocolConfig.h>
#include <protocols/Protocols.h>
#include <protocols/echo/Echo.h>
#include <transport/SessionManager.h>
Expand Down Expand Up @@ -57,6 +58,18 @@ using TestContext = Test::LoopbackMessagingContext;

const char PAYLOAD[] = "Hello!";

#ifdef CHIP_CONFIG_MRP_RETRY_INTERVAL_SENDER_BOOST
// When the CHIP_CONFIG_MRP_RETRY_INTERVAL_SENDER_BOOST is set, the stack
// operates under the assumption of a high latency network (like Thread),
// so it adds extra delays to avoid spurious retransmits.
//
// This adds extra I/O time to account for this. See the documentation for
// CHIP_CONFIG_MRP_RETRY_INTERVAL_SENDER_BOOST for more details.
constexpr auto retryBoosterTimeout = CHIP_CONFIG_RMP_DEFAULT_MAX_RETRANS * CHIP_CONFIG_MRP_RETRY_INTERVAL_SENDER_BOOST;
#else
constexpr auto retryBoosterTimeout = System::Clock::Milliseconds32(0);
#endif

class MockAppDelegate : public UnsolicitedMessageHandler, public ExchangeDelegate
{
public:
Expand Down Expand Up @@ -363,7 +376,7 @@ void CheckResendApplicationMessage(nlTestSuite * inSuite, void * inContext)
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 1);

// Wait for the initial message to fail (should take 330-413ms)
ctx.GetIOContext().DriveIOUntil(1000_ms32, [&] { return loopback.mSentMessageCount >= 2; });
ctx.GetIOContext().DriveIOUntil(1000_ms32 + retryBoosterTimeout, [&] { return loopback.mSentMessageCount >= 2; });
now = System::SystemClock().GetMonotonicTimestamp();
timeoutTime = now - startTime;
ChipLogProgress(Test, "Attempt #1 Timeout : %" PRIu32 "ms", timeoutTime.count());
Expand All @@ -380,7 +393,7 @@ void CheckResendApplicationMessage(nlTestSuite * inSuite, void * inContext)
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 1);

// Wait for the 1st retry to fail (should take 330-413ms)
ctx.GetIOContext().DriveIOUntil(1000_ms32, [&] { return loopback.mSentMessageCount >= 3; });
ctx.GetIOContext().DriveIOUntil(1000_ms32 + retryBoosterTimeout, [&] { return loopback.mSentMessageCount >= 3; });
now = System::SystemClock().GetMonotonicTimestamp();
timeoutTime = now - startTime;
ChipLogProgress(Test, "Attempt #2 Timeout : %" PRIu32 "ms", timeoutTime.count());
Expand All @@ -397,7 +410,7 @@ void CheckResendApplicationMessage(nlTestSuite * inSuite, void * inContext)
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 1);

// Wait for the 2nd retry to fail (should take 528-660ms)
ctx.GetIOContext().DriveIOUntil(1000_ms32, [&] { return loopback.mSentMessageCount >= 4; });
ctx.GetIOContext().DriveIOUntil(1000_ms32 + retryBoosterTimeout, [&] { return loopback.mSentMessageCount >= 4; });
now = System::SystemClock().GetMonotonicTimestamp();
timeoutTime = now - startTime;
ChipLogProgress(Test, "Attempt #3 Timeout : %" PRIu32 "ms", timeoutTime.count());
Expand All @@ -414,7 +427,7 @@ void CheckResendApplicationMessage(nlTestSuite * inSuite, void * inContext)
NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 1);

// Wait for the 3rd retry to fail (should take 845-1056ms)
ctx.GetIOContext().DriveIOUntil(1500_ms32, [&] { return loopback.mSentMessageCount >= 5; });
ctx.GetIOContext().DriveIOUntil(1500_ms32 + retryBoosterTimeout, [&] { return loopback.mSentMessageCount >= 5; });
now = System::SystemClock().GetMonotonicTimestamp();
timeoutTime = now - startTime;
ChipLogProgress(Test, "Attempt #4 Timeout : %" PRIu32 "ms", timeoutTime.count());
Expand Down Expand Up @@ -1655,7 +1668,7 @@ void CheckGetBackoff(nlTestSuite * inSuite, void * inContext)
backoff.count());

NL_TEST_ASSERT(inSuite, backoff >= test.backoffMin);
NL_TEST_ASSERT(inSuite, backoff <= test.backoffMax);
NL_TEST_ASSERT(inSuite, backoff <= test.backoffMax + retryBoosterTimeout);
}
}
}
Expand Down Expand Up @@ -1683,38 +1696,37 @@ int InitializeTestCase(void * inContext)
* 8. A sends message 5 to B.
*/

// Test Suite

/**
* Test Suite that lists all the test functions.
*/
// clang-format off
const nlTest sTests[] =
{
const nlTest sTests[] = {
NL_TEST_DEF("Test ReliableMessageMgr::CheckAddClearRetrans", CheckAddClearRetrans),
NL_TEST_DEF("Test ReliableMessageMgr::CheckResendApplicationMessage", CheckResendApplicationMessage),
NL_TEST_DEF("Test ReliableMessageMgr::CheckCloseExchangeAndResendApplicationMessage", CheckCloseExchangeAndResendApplicationMessage),
NL_TEST_DEF("Test ReliableMessageMgr::CheckCloseExchangeAndResendApplicationMessage",
CheckCloseExchangeAndResendApplicationMessage),
NL_TEST_DEF("Test ReliableMessageMgr::CheckFailedMessageRetainOnSend", CheckFailedMessageRetainOnSend),
NL_TEST_DEF("Test ReliableMessageMgr::CheckResendApplicationMessageWithPeerExchange", CheckResendApplicationMessageWithPeerExchange),
NL_TEST_DEF("Test ReliableMessageMgr::CheckResendSessionEstablishmentMessageWithPeerExchange", CheckResendSessionEstablishmentMessageWithPeerExchange),
NL_TEST_DEF("Test ReliableMessageMgr::CheckResendApplicationMessageWithPeerExchange",
CheckResendApplicationMessageWithPeerExchange),
NL_TEST_DEF("Test ReliableMessageMgr::CheckResendSessionEstablishmentMessageWithPeerExchange",
CheckResendSessionEstablishmentMessageWithPeerExchange),
NL_TEST_DEF("Test ReliableMessageMgr::CheckDuplicateMessage", CheckDuplicateMessage),
NL_TEST_DEF("Test ReliableMessageMgr::CheckDuplicateMessageClosedExchange", CheckDuplicateMessageClosedExchange),
NL_TEST_DEF("Test ReliableMessageMgr::CheckDuplicateOldMessageClosedExchange", CheckDuplicateOldMessageClosedExchange),
NL_TEST_DEF("Test that a reply after a standalone ack comes through correctly", CheckReceiveAfterStandaloneAck),
NL_TEST_DEF("Test that a reply to a non-MRP message piggybacks an ack if there were MRP things happening on the context before", CheckPiggybackAfterPiggyback),
NL_TEST_DEF("Test that a reply to a non-MRP message piggybacks an ack if there were MRP things happening on the context before",
CheckPiggybackAfterPiggyback),
NL_TEST_DEF("Test sending an unsolicited ack-soliciting 'standalone ack' message", CheckSendUnsolicitedStandaloneAckMessage),
NL_TEST_DEF("Test ReliableMessageMgr::CheckSendStandaloneAckMessage", CheckSendStandaloneAckMessage),
NL_TEST_DEF("Test command, response, default response, with receiver closing exchange after sending response", CheckMessageAfterClosed),
NL_TEST_DEF("Test command, response, default response, with receiver closing exchange after sending response",
CheckMessageAfterClosed),
NL_TEST_DEF("Test that unencrypted message is dropped if exchange requires encryption", CheckUnencryptedMessageReceiveFailure),
NL_TEST_DEF("Test that dropping an application-level message with a piggyback ack works ok once both sides retransmit", CheckLostResponseWithPiggyback),
NL_TEST_DEF("Test that an application-level response-to-response after a lost standalone ack to the initial message works", CheckLostStandaloneAck),
NL_TEST_DEF("Test that dropping an application-level message with a piggyback ack works ok once both sides retransmit",
CheckLostResponseWithPiggyback),
NL_TEST_DEF("Test that an application-level response-to-response after a lost standalone ack to the initial message works",
CheckLostStandaloneAck),
NL_TEST_DEF("Test MRP backoff algorithm", CheckGetBackoff),

NL_TEST_SENTINEL()
NL_TEST_SENTINEL(),
};

nlTestSuite sSuite =
{
// clang-format off
nlTestSuite sSuite = {
"Test-CHIP-ReliableMessageProtocol",
&sTests[0],
TestContext::Initialize,
Expand All @@ -1725,9 +1737,6 @@ nlTestSuite sSuite =

} // namespace

/**
* Main
*/
int TestReliableMessageProtocol()
{
return chip::ExecuteTestsWithContext<TestContext>(&sSuite);
Expand Down

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