chromium/net/third_party/quiche/src/quiche/quic/core/quic_stream_id_manager_test.cc

// Copyright (c) 2018 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "quiche/quic/core/quic_stream_id_manager.h"

#include <cstdint>
#include <string>
#include <utility>
#include <vector>

#include "absl/strings/str_cat.h"
#include "quiche/quic/core/quic_constants.h"
#include "quiche/quic/core/quic_utils.h"
#include "quiche/quic/core/quic_versions.h"
#include "quiche/quic/platform/api/quic_expect_bug.h"
#include "quiche/quic/platform/api/quic_test.h"
#include "quiche/quic/test_tools/quic_stream_id_manager_peer.h"

_;
StrictMock;

namespace quic {
namespace test {
namespace {

class MockDelegate : public QuicStreamIdManager::DelegateInterface { … };

struct TestParams { … };

// Used by ::testing::PrintToStringParamName().
std::string PrintToString(const TestParams& p) { … }

std::vector<TestParams> GetTestParams() { … }

class QuicStreamIdManagerTest : public QuicTestWithParam<TestParams> { … };

INSTANTIATE_TEST_SUITE_P(…);

TEST_P(QuicStreamIdManagerTest, Initialization) { … }

// This test checks that the stream advertisement window is set to 1
// if the number of stream ids is 1. This is a special case in the code.
TEST_P(QuicStreamIdManagerTest, CheckMaxStreamsWindowForSingleStream) { … }

TEST_P(QuicStreamIdManagerTest, CheckMaxStreamsBadValuesOverMaxFailsOutgoing) { … }

// Check the case of the stream count in a STREAMS_BLOCKED frame is less than
// the count most recently advertised in a MAX_STREAMS frame.
TEST_P(QuicStreamIdManagerTest, ProcessStreamsBlockedOk) { … }

// Check the case of the stream count in a STREAMS_BLOCKED frame is equal to the
// count most recently advertised in a MAX_STREAMS frame. No MAX_STREAMS
// should be generated.
TEST_P(QuicStreamIdManagerTest, ProcessStreamsBlockedNoOp) { … }

// Check the case of the stream count in a STREAMS_BLOCKED frame is greater than
// the count most recently advertised in a MAX_STREAMS frame. Expect a
// connection close with an error.
TEST_P(QuicStreamIdManagerTest, ProcessStreamsBlockedTooBig) { … }

// Same basic tests as above, but calls
// QuicStreamIdManager::MaybeIncreaseLargestPeerStreamId directly, avoiding the
// call chain. The intent is that if there is a problem, the following tests
// will point to either the stream ID manager or the call chain. They also
// provide specific, small scale, tests of a public QuicStreamIdManager method.
// First test make sure that streams with ids below the limit are accepted.
TEST_P(QuicStreamIdManagerTest, IsIncomingStreamIdValidBelowLimit) { … }

// Accept a stream with an ID that equals the limit.
TEST_P(QuicStreamIdManagerTest, IsIncomingStreamIdValidAtLimit) { … }

// Close the connection if the id exceeds the limit.
TEST_P(QuicStreamIdManagerTest, IsIncomingStreamIdInValidAboveLimit) { … }

TEST_P(QuicStreamIdManagerTest, OnStreamsBlockedFrame) { … }

TEST_P(QuicStreamIdManagerTest, OnStreamsBlockedFrameCantSend) { … }

TEST_P(QuicStreamIdManagerTest, GetNextOutgoingStream) { … }

TEST_P(QuicStreamIdManagerTest, MaybeIncreaseLargestPeerStreamId) { … }

TEST_P(QuicStreamIdManagerTest, MaxStreamsWindow) { … }

TEST_P(QuicStreamIdManagerTest, MaxStreamsWindowCantSend) { … }

TEST_P(QuicStreamIdManagerTest, MaxStreamsWindowStopsIncreasing) { … }

TEST_P(QuicStreamIdManagerTest, StreamsBlockedEdgeConditions) { … }

// Test that a MAX_STREAMS frame is generated when half the stream ids become
// available. This has a useful side effect of testing that when streams are
// closed, the number of available stream ids increases.
TEST_P(QuicStreamIdManagerTest, MaxStreamsSlidingWindow) { … }

TEST_P(QuicStreamIdManagerTest, NewStreamDoesNotExceedLimit) { … }

TEST_P(QuicStreamIdManagerTest, AvailableStreams) { … }

// Tests that if MaybeIncreaseLargestPeerStreamId is given an extremely
// large stream ID (larger than the limit) it is rejected.
// This is a regression for Chromium bugs 909987 and 910040
TEST_P(QuicStreamIdManagerTest, ExtremeMaybeIncreaseLargestPeerStreamId) { … }

}  // namespace
}  // namespace test
}  // namespace quic