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webrtc_m130/webrtc/pc/iceserverparsing_unittest.cc
deadbeef 1dcb16409a Rewrite PeerConnection integration tests using better testing practices. 
Also renames "peerconnection_unittests" to "peerconnection_integrationtests",
and moves the ICE URL parsing code to separate files.

The main problem previously was that the test assertions
occurred in various places in the main test class, and this shared test
code was overly complex and stateful. As a result, it was difficult to
tell what a test even does, let alone what assertions it's meant to be
making. And writing a new test that does what you want can be a
frustrating ordeal.

The new code still uses helper methods, but they have intuitive names
and a smaller role; all of the important parts of the test's logic are
in the test case itself.

We're planning on merging PeerConnection and WebRtcSession at some point
soon, so it seemed valuable to do this, so that the WebRtcSession tests
can be rewritten as PeerConnection tests using better patterns.

BUG=None

Review-Url: https://codereview.webrtc.org/2738353003
Cr-Commit-Position: refs/heads/master@{#17458}
2017-03-30 04:08:16 +00:00

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/*
* Copyright 2012 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 <string>
#include <vector>
#include "webrtc/base/gunit.h"
#include "webrtc/pc/iceserverparsing.h"
namespace webrtc {
class IceServerParsingTest : public testing::Test {
public:
// Convenience functions for parsing a single URL. Result is stored in
// |stun_servers_| and |turn_servers_|.
bool ParseUrl(const std::string& url) {
return ParseUrl(url, std::string(), std::string());
}
bool ParseTurnUrl(const std::string& url) {
return ParseUrl(url, "username", "password");
}
bool ParseUrl(const std::string& url,
const std::string& username,
const std::string& password) {
return ParseUrl(
url, username, password,
PeerConnectionInterface::TlsCertPolicy::kTlsCertPolicySecure);
}
bool ParseUrl(const std::string& url,
const std::string& username,
const std::string& password,
PeerConnectionInterface::TlsCertPolicy tls_certificate_policy) {
stun_servers_.clear();
turn_servers_.clear();
PeerConnectionInterface::IceServers servers;
PeerConnectionInterface::IceServer server;
server.urls.push_back(url);
server.username = username;
server.password = password;
server.tls_cert_policy = tls_certificate_policy;
servers.push_back(server);
return webrtc::ParseIceServers(servers, &stun_servers_, &turn_servers_) ==
webrtc::RTCErrorType::NONE;
}
protected:
cricket::ServerAddresses stun_servers_;
std::vector<cricket::RelayServerConfig> turn_servers_;
};
// Make sure all STUN/TURN prefixes are parsed correctly.
TEST_F(IceServerParsingTest, ParseStunPrefixes) {
EXPECT_TRUE(ParseUrl("stun:hostname"));
EXPECT_EQ(1U, stun_servers_.size());
EXPECT_EQ(0U, turn_servers_.size());
EXPECT_TRUE(ParseUrl("stuns:hostname"));
EXPECT_EQ(1U, stun_servers_.size());
EXPECT_EQ(0U, turn_servers_.size());
EXPECT_TRUE(ParseTurnUrl("turn:hostname"));
EXPECT_EQ(0U, stun_servers_.size());
EXPECT_EQ(1U, turn_servers_.size());
EXPECT_EQ(cricket::PROTO_UDP, turn_servers_[0].ports[0].proto);
EXPECT_TRUE(ParseTurnUrl("turns:hostname"));
EXPECT_EQ(0U, stun_servers_.size());
EXPECT_EQ(1U, turn_servers_.size());
EXPECT_EQ(cricket::PROTO_TLS, turn_servers_[0].ports[0].proto);
EXPECT_TRUE(turn_servers_[0].tls_cert_policy ==
cricket::TlsCertPolicy::TLS_CERT_POLICY_SECURE);
EXPECT_TRUE(ParseUrl(
"turns:hostname", "username", "password",
PeerConnectionInterface::TlsCertPolicy::kTlsCertPolicyInsecureNoCheck));
EXPECT_EQ(0U, stun_servers_.size());
EXPECT_EQ(1U, turn_servers_.size());
EXPECT_TRUE(turn_servers_[0].tls_cert_policy ==
cricket::TlsCertPolicy::TLS_CERT_POLICY_INSECURE_NO_CHECK);
EXPECT_EQ(cricket::PROTO_TLS, turn_servers_[0].ports[0].proto);
// invalid prefixes
EXPECT_FALSE(ParseUrl("stunn:hostname"));
EXPECT_FALSE(ParseUrl(":hostname"));
EXPECT_FALSE(ParseUrl(":"));
EXPECT_FALSE(ParseUrl(""));
}
TEST_F(IceServerParsingTest, VerifyDefaults) {
// TURNS defaults
EXPECT_TRUE(ParseTurnUrl("turns:hostname"));
EXPECT_EQ(1U, turn_servers_.size());
EXPECT_EQ(5349, turn_servers_[0].ports[0].address.port());
EXPECT_EQ(cricket::PROTO_TLS, turn_servers_[0].ports[0].proto);
// TURN defaults
EXPECT_TRUE(ParseTurnUrl("turn:hostname"));
EXPECT_EQ(1U, turn_servers_.size());
EXPECT_EQ(3478, turn_servers_[0].ports[0].address.port());
EXPECT_EQ(cricket::PROTO_UDP, turn_servers_[0].ports[0].proto);
// STUN defaults
EXPECT_TRUE(ParseUrl("stun:hostname"));
EXPECT_EQ(1U, stun_servers_.size());
EXPECT_EQ(3478, stun_servers_.begin()->port());
}
// Check that the 6 combinations of IPv4/IPv6/hostname and with/without port
// can be parsed correctly.
TEST_F(IceServerParsingTest, ParseHostnameAndPort) {
EXPECT_TRUE(ParseUrl("stun:1.2.3.4:1234"));
EXPECT_EQ(1U, stun_servers_.size());
EXPECT_EQ("1.2.3.4", stun_servers_.begin()->hostname());
EXPECT_EQ(1234, stun_servers_.begin()->port());
EXPECT_TRUE(ParseUrl("stun:[1:2:3:4:5:6:7:8]:4321"));
EXPECT_EQ(1U, stun_servers_.size());
EXPECT_EQ("1:2:3:4:5:6:7:8", stun_servers_.begin()->hostname());
EXPECT_EQ(4321, stun_servers_.begin()->port());
EXPECT_TRUE(ParseUrl("stun:hostname:9999"));
EXPECT_EQ(1U, stun_servers_.size());
EXPECT_EQ("hostname", stun_servers_.begin()->hostname());
EXPECT_EQ(9999, stun_servers_.begin()->port());
EXPECT_TRUE(ParseUrl("stun:1.2.3.4"));
EXPECT_EQ(1U, stun_servers_.size());
EXPECT_EQ("1.2.3.4", stun_servers_.begin()->hostname());
EXPECT_EQ(3478, stun_servers_.begin()->port());
EXPECT_TRUE(ParseUrl("stun:[1:2:3:4:5:6:7:8]"));
EXPECT_EQ(1U, stun_servers_.size());
EXPECT_EQ("1:2:3:4:5:6:7:8", stun_servers_.begin()->hostname());
EXPECT_EQ(3478, stun_servers_.begin()->port());
EXPECT_TRUE(ParseUrl("stun:hostname"));
EXPECT_EQ(1U, stun_servers_.size());
EXPECT_EQ("hostname", stun_servers_.begin()->hostname());
EXPECT_EQ(3478, stun_servers_.begin()->port());
// Try some invalid hostname:port strings.
EXPECT_FALSE(ParseUrl("stun:hostname:99a99"));
EXPECT_FALSE(ParseUrl("stun:hostname:-1"));
EXPECT_FALSE(ParseUrl("stun:hostname:port:more"));
EXPECT_FALSE(ParseUrl("stun:hostname:port more"));
EXPECT_FALSE(ParseUrl("stun:hostname:"));
EXPECT_FALSE(ParseUrl("stun:[1:2:3:4:5:6:7:8]junk:1000"));
EXPECT_FALSE(ParseUrl("stun::5555"));
EXPECT_FALSE(ParseUrl("stun:"));
}
// Test parsing the "?transport=xxx" part of the URL.
TEST_F(IceServerParsingTest, ParseTransport) {
EXPECT_TRUE(ParseTurnUrl("turn:hostname:1234?transport=tcp"));
EXPECT_EQ(1U, turn_servers_.size());
EXPECT_EQ(cricket::PROTO_TCP, turn_servers_[0].ports[0].proto);
EXPECT_TRUE(ParseTurnUrl("turn:hostname?transport=udp"));
EXPECT_EQ(1U, turn_servers_.size());
EXPECT_EQ(cricket::PROTO_UDP, turn_servers_[0].ports[0].proto);
EXPECT_FALSE(ParseTurnUrl("turn:hostname?transport=invalid"));
EXPECT_FALSE(ParseTurnUrl("turn:hostname?transport="));
EXPECT_FALSE(ParseTurnUrl("turn:hostname?="));
EXPECT_FALSE(ParseTurnUrl("turn:hostname?"));
EXPECT_FALSE(ParseTurnUrl("?"));
}
// Test parsing ICE username contained in URL.
TEST_F(IceServerParsingTest, ParseUsername) {
EXPECT_TRUE(ParseTurnUrl("turn:user@hostname"));
EXPECT_EQ(1U, turn_servers_.size());
EXPECT_EQ("user", turn_servers_[0].credentials.username);
EXPECT_FALSE(ParseTurnUrl("turn:@hostname"));
EXPECT_FALSE(ParseTurnUrl("turn:username@"));
EXPECT_FALSE(ParseTurnUrl("turn:@"));
EXPECT_FALSE(ParseTurnUrl("turn:user@name@hostname"));
}
// Test that username and password from IceServer is copied into the resulting
// RelayServerConfig.
TEST_F(IceServerParsingTest, CopyUsernameAndPasswordFromIceServer) {
EXPECT_TRUE(ParseUrl("turn:hostname", "username", "password"));
EXPECT_EQ(1U, turn_servers_.size());
EXPECT_EQ("username", turn_servers_[0].credentials.username);
EXPECT_EQ("password", turn_servers_[0].credentials.password);
}
// Ensure that if a server has multiple URLs, each one is parsed.
TEST_F(IceServerParsingTest, ParseMultipleUrls) {
PeerConnectionInterface::IceServers servers;
PeerConnectionInterface::IceServer server;
server.urls.push_back("stun:hostname");
server.urls.push_back("turn:hostname");
server.username = "foo";
server.password = "bar";
servers.push_back(server);
EXPECT_EQ(webrtc::RTCErrorType::NONE,
webrtc::ParseIceServers(servers, &stun_servers_, &turn_servers_));
EXPECT_EQ(1U, stun_servers_.size());
EXPECT_EQ(1U, turn_servers_.size());
}
// Ensure that TURN servers are given unique priorities,
// so that their resulting candidates have unique priorities.
TEST_F(IceServerParsingTest, TurnServerPrioritiesUnique) {
PeerConnectionInterface::IceServers servers;
PeerConnectionInterface::IceServer server;
server.urls.push_back("turn:hostname");
server.urls.push_back("turn:hostname2");
server.username = "foo";
server.password = "bar";
servers.push_back(server);
EXPECT_EQ(webrtc::RTCErrorType::NONE,
webrtc::ParseIceServers(servers, &stun_servers_, &turn_servers_));
EXPECT_EQ(2U, turn_servers_.size());
EXPECT_NE(turn_servers_[0].priority, turn_servers_[1].priority);
}
} // namespace webrtc
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