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/*
* Copyright 2018 The WebRTC Project Authors. All rights reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "pc/rtc_stats_traversal.h"
#include <memory>
#include <string>
#include <vector>
#include "api/scoped_refptr.h"
#include "api/stats/rtc_stats.h"
#include "api/stats/rtc_stats_report.h"
#include "api/stats/rtcstats_objects.h"
#include "api/units/timestamp.h"
#include "test/gtest.h"
// This file contains tests for TakeReferencedStats().
// GetStatsNeighborIds() is tested in rtcstats_integrationtest.cc.
namespace webrtc {
class RTCStatsTraversalTest : public ::testing::Test {
public:
RTCStatsTraversalTest() {
transport_ = new RTCTransportStats("transport", Timestamp::Zero());
candidate_pair_ =
new RTCIceCandidatePairStats("candidate-pair", Timestamp::Zero());
local_candidate_ =
new RTCLocalIceCandidateStats("local-candidate", Timestamp::Zero());
remote_candidate_ =
new RTCRemoteIceCandidateStats("remote-candidate", Timestamp::Zero());
initial_report_ = RTCStatsReport::Create(Timestamp::Zero());
initial_report_->AddStats(std::unique_ptr<const RTCStats>(transport_));
initial_report_->AddStats(std::unique_ptr<const RTCStats>(candidate_pair_));
initial_report_->AddStats(
std::unique_ptr<const RTCStats>(local_candidate_));
initial_report_->AddStats(
std::unique_ptr<const RTCStats>(remote_candidate_));
result_ = RTCStatsReport::Create(Timestamp::Zero());
}
void TakeReferencedStats(std::vector<const RTCStats*> start_nodes) {
std::vector<std::string> start_ids;
start_ids.reserve(start_nodes.size());
for (const RTCStats* start_node : start_nodes) {
start_ids.push_back(start_node->id());
}
result_ = ::webrtc::TakeReferencedStats(initial_report_, start_ids);
}
void EXPECT_VISITED(const RTCStats* stats) {
EXPECT_FALSE(initial_report_->Get(stats->id()))
<< '"' << stats->id()
<< "\" should be visited but it was not removed from initial report.";
EXPECT_TRUE(result_->Get(stats->id()))
<< '"' << stats->id()
<< "\" should be visited but it was not added to the resulting report.";
}
void EXPECT_UNVISITED(const RTCStats* stats) {
EXPECT_TRUE(initial_report_->Get(stats->id()))
<< '"' << stats->id()
<< "\" should not be visited but it was removed from initial report.";
EXPECT_FALSE(result_->Get(stats->id()))
<< '"' << stats->id()
<< "\" should not be visited but it was added to the resulting report.";
}
protected:
scoped_refptr<RTCStatsReport> initial_report_;
scoped_refptr<RTCStatsReport> result_;
// Raw pointers to stats owned by the reports.
RTCTransportStats* transport_;
RTCIceCandidatePairStats* candidate_pair_;
RTCIceCandidateStats* local_candidate_;
RTCIceCandidateStats* remote_candidate_;
};
TEST_F(RTCStatsTraversalTest, NoReachableConnections) {
// Everything references transport but transport doesn't reference anything.
//
// candidate-pair
// | | |
// v | v
// local-candidate | remote-candidate
// | | |
// v v v
// start:transport
candidate_pair_->transport_id = "transport";
candidate_pair_->local_candidate_id = "local-candidate";
candidate_pair_->remote_candidate_id = "remote-candidate";
local_candidate_->transport_id = "transport";
remote_candidate_->transport_id = "transport";
TakeReferencedStats({transport_});
EXPECT_VISITED(transport_);
EXPECT_UNVISITED(candidate_pair_);
EXPECT_UNVISITED(local_candidate_);
EXPECT_UNVISITED(remote_candidate_);
}
TEST_F(RTCStatsTraversalTest, SelfReference) {
transport_->rtcp_transport_stats_id = "transport";
TakeReferencedStats({transport_});
EXPECT_VISITED(transport_);
EXPECT_UNVISITED(candidate_pair_);
EXPECT_UNVISITED(local_candidate_);
EXPECT_UNVISITED(remote_candidate_);
}
TEST_F(RTCStatsTraversalTest, BogusReference) {
transport_->rtcp_transport_stats_id = "bogus-reference";
TakeReferencedStats({transport_});
EXPECT_VISITED(transport_);
EXPECT_UNVISITED(candidate_pair_);
EXPECT_UNVISITED(local_candidate_);
EXPECT_UNVISITED(remote_candidate_);
}
TEST_F(RTCStatsTraversalTest, Tree) {
// start:candidate-pair
// | |
// v v
// local-candidate remote-candidate
// |
// v
// transport
candidate_pair_->local_candidate_id = "local-candidate";
candidate_pair_->remote_candidate_id = "remote-candidate";
local_candidate_->transport_id = "transport";
TakeReferencedStats({candidate_pair_});
EXPECT_VISITED(transport_);
EXPECT_VISITED(candidate_pair_);
EXPECT_VISITED(local_candidate_);
EXPECT_VISITED(remote_candidate_);
}
TEST_F(RTCStatsTraversalTest, MultiplePathsToSameNode) {
// start:candidate-pair
// | |
// v v
// local-candidate remote-candidate
// | |
// v v
// transport
candidate_pair_->local_candidate_id = "local-candidate";
candidate_pair_->remote_candidate_id = "remote-candidate";
local_candidate_->transport_id = "transport";
remote_candidate_->transport_id = "transport";
TakeReferencedStats({candidate_pair_});
EXPECT_VISITED(transport_);
EXPECT_VISITED(candidate_pair_);
EXPECT_VISITED(local_candidate_);
EXPECT_VISITED(remote_candidate_);
}
TEST_F(RTCStatsTraversalTest, CyclicGraph) {
// candidate-pair
// | ^
// v |
// start:local-candidate | remote-candidate
// | |
// v |
// transport
local_candidate_->transport_id = "transport";
transport_->selected_candidate_pair_id = "candidate-pair";
candidate_pair_->local_candidate_id = "local-candidate";
TakeReferencedStats({local_candidate_});
EXPECT_VISITED(transport_);
EXPECT_VISITED(candidate_pair_);
EXPECT_VISITED(local_candidate_);
EXPECT_UNVISITED(remote_candidate_);
}
TEST_F(RTCStatsTraversalTest, MultipleStarts) {
// start:candidate-pair
// |
// v
// local-candidate remote-candidate
// |
// v
// start:transport
candidate_pair_->remote_candidate_id = "remote-candidate";
local_candidate_->transport_id = "transport";
TakeReferencedStats({candidate_pair_, transport_});
EXPECT_VISITED(transport_);
EXPECT_VISITED(candidate_pair_);
EXPECT_UNVISITED(local_candidate_);
EXPECT_VISITED(remote_candidate_);
}
TEST_F(RTCStatsTraversalTest, MultipleStartsLeadingToSameNode) {
// candidate-pair
//
//
// start:local-candidate start:remote-candidate
// | |
// v v
// transport
local_candidate_->transport_id = "transport";
remote_candidate_->transport_id = "transport";
TakeReferencedStats({local_candidate_, remote_candidate_});
EXPECT_VISITED(transport_);
EXPECT_UNVISITED(candidate_pair_);
EXPECT_VISITED(local_candidate_);
EXPECT_VISITED(remote_candidate_);
}
} // namespace webrtc
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