Revert of Relanding: Implement RTCConfiguration.iceCandidatePoolSize.

webrtc/p2p/base/portallocator_unittest.cc

-/*
- *  Copyright 2016 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 <memory>
-
-#include "webrtc/base/gunit.h"
-#include "webrtc/base/thread.h"
-#include "webrtc/p2p/base/fakeportallocator.h"
-#include "webrtc/p2p/base/portallocator.h"
-
-static const char kContentName[] = "test content";
-// Based on ICE_UFRAG_LENGTH
-static const char kIceUfrag[] = "TESTICEUFRAG0000";
-// Based on ICE_PWD_LENGTH
-static const char kIcePwd[] = "TESTICEPWD00000000000000";
-static const char kTurnUsername[] = "test";
-static const char kTurnPassword[] = "test";
-
-class PortAllocatorTest : public testing::Test, public sigslot::has_slots<> {
- public:
-  PortAllocatorTest() {
-    allocator_.reset(
-        new cricket::FakePortAllocator(rtc::Thread::Current(), nullptr));
-  }
-
- protected:
-  void SetConfigurationWithPoolSize(int candidate_pool_size) {
-    allocator_->SetConfiguration(cricket::ServerAddresses(),
-                                 std::vector<cricket::RelayServerConfig>(),
-                                 candidate_pool_size);
-  }
-
-  const cricket::FakePortAllocatorSession* GetPooledSession() const {
-    return static_cast<const cricket::FakePortAllocatorSession*>(
-        allocator_->GetPooledSession());
-  }
-
-  std::unique_ptr<cricket::FakePortAllocatorSession> TakePooledSession() {
-    return std::unique_ptr<cricket::FakePortAllocatorSession>(
-        static_cast<cricket::FakePortAllocatorSession*>(
-            allocator_->TakePooledSession(kContentName, 0, kIceUfrag, kIcePwd)
-                .release()));
-  }
-
-  int GetAllPooledSessionsReturnCount() {
-    int count = 0;
-    while (GetPooledSession()) {
-      TakePooledSession();
-      ++count;
-    }
-    return count;
-  }
-
-  std::unique_ptr<cricket::FakePortAllocator> allocator_;
-  rtc::SocketAddress stun_server_1{"11.11.11.11", 3478};
-  rtc::SocketAddress stun_server_2{"22.22.22.22", 3478};
-  cricket::RelayServerConfig turn_server_1{"11.11.11.11",      3478,
-                                           kTurnUsername,      kTurnPassword,
-                                           cricket::PROTO_UDP, false};
-  cricket::RelayServerConfig turn_server_2{"22.22.22.22",      3478,
-                                           kTurnUsername,      kTurnPassword,
-                                           cricket::PROTO_UDP, false};
-};
-
-TEST_F(PortAllocatorTest, TestDefaults) {
-  EXPECT_EQ(0UL, allocator_->stun_servers().size());
-  EXPECT_EQ(0UL, allocator_->turn_servers().size());
-  EXPECT_EQ(0, allocator_->candidate_pool_size());
-  EXPECT_EQ(0, GetAllPooledSessionsReturnCount());
-}
-
-TEST_F(PortAllocatorTest, SetConfigurationUpdatesIceServers) {
-  cricket::ServerAddresses stun_servers_1 = {stun_server_1};
-  std::vector<cricket::RelayServerConfig> turn_servers_1 = {turn_server_1};
-  allocator_->SetConfiguration(stun_servers_1, turn_servers_1, 0);
-  EXPECT_EQ(stun_servers_1, allocator_->stun_servers());
-  EXPECT_EQ(turn_servers_1, allocator_->turn_servers());
-
-  // Update with a different set of servers.
-  cricket::ServerAddresses stun_servers_2 = {stun_server_2};
-  std::vector<cricket::RelayServerConfig> turn_servers_2 = {turn_server_2};
-  allocator_->SetConfiguration(stun_servers_2, turn_servers_2, 0);
-  EXPECT_EQ(stun_servers_2, allocator_->stun_servers());
-  EXPECT_EQ(turn_servers_2, allocator_->turn_servers());
-}
-
-TEST_F(PortAllocatorTest, SetConfigurationUpdatesCandidatePoolSize) {
-  SetConfigurationWithPoolSize(2);
-  EXPECT_EQ(2, allocator_->candidate_pool_size());
-  SetConfigurationWithPoolSize(3);
-  EXPECT_EQ(3, allocator_->candidate_pool_size());
-  SetConfigurationWithPoolSize(1);
-  EXPECT_EQ(1, allocator_->candidate_pool_size());
-  SetConfigurationWithPoolSize(4);
-  EXPECT_EQ(4, allocator_->candidate_pool_size());
-}
-
-// A negative pool size should just be treated as zero.
-TEST_F(PortAllocatorTest, SetConfigurationWithNegativePoolSizeDoesntCrash) {
-  SetConfigurationWithPoolSize(-1);
-  // No asserts; we're just testing that this doesn't crash.
-}
-
-// Test that if the candidate pool size is nonzero, pooled sessions are
-// created, and StartGettingPorts is called on them.
-TEST_F(PortAllocatorTest, SetConfigurationCreatesPooledSessions) {
-  SetConfigurationWithPoolSize(2);
-  auto session_1 = TakePooledSession();
-  auto session_2 = TakePooledSession();
-  ASSERT_NE(nullptr, session_1.get());
-  ASSERT_NE(nullptr, session_2.get());
-  EXPECT_EQ(1, session_1->port_config_count());
-  EXPECT_EQ(1, session_2->port_config_count());
-  EXPECT_EQ(0, GetAllPooledSessionsReturnCount());
-}
-
-// Test that if the candidate pool size is increased, pooled sessions are
-// created as necessary.
-TEST_F(PortAllocatorTest, SetConfigurationCreatesMorePooledSessions) {
-  SetConfigurationWithPoolSize(1);
-  SetConfigurationWithPoolSize(2);
-  EXPECT_EQ(2, GetAllPooledSessionsReturnCount());
-}
-
-// Test that if the candidate pool size is reduced, extra sessions are
-// destroyed.
-TEST_F(PortAllocatorTest, SetConfigurationDestroysPooledSessions) {
-  SetConfigurationWithPoolSize(2);
-  SetConfigurationWithPoolSize(1);
-  EXPECT_EQ(1, GetAllPooledSessionsReturnCount());
-}
-
-// Test that if the candidate pool size is reduced and increased, but reducing
-// didn't actually destroy any sessions (because they were already given away),
-// increasing the size to its initial value doesn't create a new session.
-TEST_F(PortAllocatorTest, SetConfigurationDoesntCreateExtraSessions) {
-  SetConfigurationWithPoolSize(1);
-  TakePooledSession();
-  SetConfigurationWithPoolSize(0);
-  SetConfigurationWithPoolSize(1);
-  EXPECT_EQ(0, GetAllPooledSessionsReturnCount());
-}
-
-// According to JSEP, exising pooled sessions should be destroyed and new
-// ones created when the ICE servers change.
-TEST_F(PortAllocatorTest,
-       SetConfigurationRecreatesPooledSessionsWhenIceServersChange) {
-  cricket::ServerAddresses stun_servers_1 = {stun_server_1};
-  std::vector<cricket::RelayServerConfig> turn_servers_1 = {turn_server_1};
-  allocator_->SetConfiguration(stun_servers_1, turn_servers_1, 1);
-  EXPECT_EQ(stun_servers_1, allocator_->stun_servers());
-  EXPECT_EQ(turn_servers_1, allocator_->turn_servers());
-
-  // Update with a different set of servers (and also change pool size).
-  cricket::ServerAddresses stun_servers_2 = {stun_server_2};
-  std::vector<cricket::RelayServerConfig> turn_servers_2 = {turn_server_2};
-  allocator_->SetConfiguration(stun_servers_2, turn_servers_2, 2);
-  EXPECT_EQ(stun_servers_2, allocator_->stun_servers());
-  EXPECT_EQ(turn_servers_2, allocator_->turn_servers());
-  auto session_1 = TakePooledSession();
-  auto session_2 = TakePooledSession();
-  ASSERT_NE(nullptr, session_1.get());
-  ASSERT_NE(nullptr, session_2.get());
-  EXPECT_EQ(stun_servers_2, session_1->stun_servers());
-  EXPECT_EQ(turn_servers_2, session_1->turn_servers());
-  EXPECT_EQ(stun_servers_2, session_2->stun_servers());
-  EXPECT_EQ(turn_servers_2, session_2->turn_servers());
-  EXPECT_EQ(0, GetAllPooledSessionsReturnCount());
-}
-
-TEST_F(PortAllocatorTest, GetPooledSessionReturnsNextSession) {
-  SetConfigurationWithPoolSize(2);
-  auto peeked_session_1 = GetPooledSession();
-  auto session_1 = TakePooledSession();
-  EXPECT_EQ(session_1.get(), peeked_session_1);
-  auto peeked_session_2 = GetPooledSession();
-  auto session_2 = TakePooledSession();
-  EXPECT_EQ(session_2.get(), peeked_session_2);
-}
-
-// Verify that subclasses of PortAllocatorSession are given a chance to update
-// ICE parameters when TakePooledSession is called, and the base class updates
-// the info itself.
-TEST_F(PortAllocatorTest, TakePooledSessionUpdatesIceParameters) {
-  SetConfigurationWithPoolSize(1);
-  auto peeked_session = GetPooledSession();
-  ASSERT_NE(nullptr, peeked_session);
-  EXPECT_EQ(0, peeked_session->transport_info_update_count());
-  std::unique_ptr<cricket::FakePortAllocatorSession> session(
-      static_cast<cricket::FakePortAllocatorSession*>(
-          allocator_->TakePooledSession(kContentName, 1, kIceUfrag, kIcePwd)
-              .release()));
-  EXPECT_EQ(1, session->transport_info_update_count());
-  EXPECT_EQ(kContentName, session->content_name());
-  EXPECT_EQ(1, session->component());
-  EXPECT_EQ(kIceUfrag, session->ice_ufrag());
-  EXPECT_EQ(kIcePwd, session->ice_pwd());
-}