1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
|
// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/nearby_sharing/mdns/nearby_connections_mdns_manager.h"
#include "base/memory/raw_ptr.h"
#include "base/strings/strcat.h"
#include "base/task/sequenced_task_runner.h"
#include "base/task/thread_pool.h"
#include "base/test/bind.h"
#include "base/test/task_environment.h"
#include "chrome/browser/local_discovery/fake_service_discovery_device_lister.h"
#include "chrome/browser/local_discovery/service_discovery_client.h"
#include "chrome/browser/local_discovery/service_discovery_device_lister.h"
#include "chromeos/ash/services/nearby/public/mojom/mdns.mojom.h"
#include "mojo/public/cpp/bindings/receiver.h"
#include "net/base/ip_address.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace {
// What would an actual service description look like?
static const char kNearbyServiceName[] = "Android1";
static const char kNearbyServiceType[] = "_8DC2285A81F6.tcp_";
static const net::IPAddress kNearbyServiceIpAddress =
net::IPAddress(192u, 168u, 57u, 64u);
static const int kNearbyServicePort = 40;
static const char kNearbyEndpointInfoKey[] = "n";
static const char kNearbyEndpointInfo[] = "TestEndpointInfo";
local_discovery::ServiceDescription MakeServiceDescription(
std::string service_name,
std::string service_type) {
local_discovery::ServiceDescription service_description;
service_description.service_name =
base::StrCat({service_name, ".", service_type});
service_description.address.set_host(base::StrCat({service_name, ".local"}));
service_description.address.set_port(kNearbyServicePort);
service_description.ip_address = kNearbyServiceIpAddress;
service_description.metadata.push_back(
base::StrCat({kNearbyEndpointInfoKey, "=", kNearbyEndpointInfo}));
return service_description;
}
} // namespace
class FakeMdnsObserver : public ::sharing::mojom::MdnsObserver {
public:
void ServiceFound(sharing::mojom::NsdServiceInfoPtr service_info) override {
++num_services_found;
found_info_ = std::move(service_info);
}
void ServiceLost(sharing::mojom::NsdServiceInfoPtr service_info) override {
++num_services_lost;
lost_info_ = std::move(service_info);
}
int num_services_found = 0;
int num_services_lost = 0;
sharing::mojom::NsdServiceInfoPtr found_info_;
sharing::mojom::NsdServiceInfoPtr lost_info_;
mojo::Receiver<::sharing::mojom::MdnsObserver> receiver_{this};
};
class NearbyConnectionsMdnsManagerTest : public ::testing::Test {
public:
NearbyConnectionsMdnsManagerTest()
: mdns_manager_(
std::make_unique<nearby::sharing::NearbyConnectionsMdnsManager>()) {
}
~NearbyConnectionsMdnsManagerTest() override = default;
void SetUp() override {
auto* runner = task_environment_.GetMainThreadTaskRunner().get();
auto nearby_service_lister =
std::make_unique<local_discovery::FakeServiceDiscoveryDeviceLister>(
runner, kNearbyServiceType);
nearby_service_lister_ = nearby_service_lister.get();
std::map<std::string,
std::unique_ptr<local_discovery::ServiceDiscoveryDeviceLister>>
temp_listers;
temp_listers[kNearbyServiceType] = std::move(nearby_service_lister);
mdns_manager_->SetDeviceListersForTesting(&temp_listers);
mdns_manager_->AddObserver(observer_.receiver_.BindNewPipeAndPassRemote());
nearby_service_lister_->SetDelegate(mdns_manager_.get());
}
protected:
void StartDiscoverySession(const std::string& service_type) {
mdns_manager_->StartDiscoverySession(
service_type,
base::BindLambdaForTesting([&](bool result) { EXPECT_TRUE(result); }));
}
void StopDiscoverySessionWithResult(const std::string& service_type,
bool expected) {
mdns_manager_->StopDiscoverySession(
service_type, base::BindLambdaForTesting(
[&](bool result) { EXPECT_EQ(result, expected); }));
}
base::test::TaskEnvironment task_environment_{
base::test::TaskEnvironment::TimeSource::MOCK_TIME};
std::unique_ptr<nearby::sharing::NearbyConnectionsMdnsManager> mdns_manager_;
// Pointer dangles when StopDiscovery is called and destroys the pointer.
raw_ptr<local_discovery::FakeServiceDiscoveryDeviceLister,
DisableDanglingPtrDetection>
nearby_service_lister_;
FakeMdnsObserver observer_;
};
TEST_F(NearbyConnectionsMdnsManagerTest, StartDiscoverySession) {
StartDiscoverySession(kNearbyServiceType);
}
TEST_F(NearbyConnectionsMdnsManagerTest, StopDiscoverySession) {
StartDiscoverySession(kNearbyServiceType);
StopDiscoverySessionWithResult(kNearbyServiceType, /*expected=*/true);
}
TEST_F(NearbyConnectionsMdnsManagerTest,
StopDiscoverySession_FailsForUnknownSession) {
StopDiscoverySessionWithResult("UnknownService", /*expected=*/false);
}
TEST_F(NearbyConnectionsMdnsManagerTest, RestartsDiscoveryAfterCacheFlushed) {
StartDiscoverySession(kNearbyServiceType);
nearby_service_lister_->Announce(
MakeServiceDescription(kNearbyServiceName, kNearbyServiceType));
task_environment_.FastForwardUntilNoTasksRemain();
EXPECT_EQ(observer_.num_services_found, 1);
nearby_service_lister_->Clear();
task_environment_.FastForwardUntilNoTasksRemain();
// Don't notify on cache flush, but expect discovery to have restarted.
EXPECT_TRUE(nearby_service_lister_->discovery_started());
EXPECT_EQ(observer_.num_services_lost, 0);
}
TEST_F(NearbyConnectionsMdnsManagerTest, NotifiesObservers_ServiceFound) {
StartDiscoverySession(kNearbyServiceType);
nearby_service_lister_->Announce(
MakeServiceDescription(kNearbyServiceName, kNearbyServiceType));
task_environment_.FastForwardUntilNoTasksRemain();
EXPECT_EQ(observer_.num_services_found, 1);
EXPECT_TRUE(observer_.found_info_);
EXPECT_EQ(observer_.found_info_->service_name, kNearbyServiceName);
EXPECT_EQ(observer_.found_info_->service_type, kNearbyServiceType);
auto ip_vec = kNearbyServiceIpAddress.CopyBytesToVector();
EXPECT_EQ(observer_.found_info_->ip_address,
std::string(ip_vec.begin(), ip_vec.end()));
EXPECT_EQ(observer_.found_info_->port, kNearbyServicePort);
EXPECT_TRUE(observer_.found_info_->txt_records.has_value());
EXPECT_EQ(observer_.found_info_->txt_records.value()[kNearbyEndpointInfoKey],
kNearbyEndpointInfo);
}
TEST_F(NearbyConnectionsMdnsManagerTest, NotifiesObservers_ServiceLost) {
StartDiscoverySession(kNearbyServiceType);
nearby_service_lister_->Announce(
MakeServiceDescription(kNearbyServiceName, kNearbyServiceType));
task_environment_.FastForwardUntilNoTasksRemain();
EXPECT_EQ(observer_.num_services_found, 1);
nearby_service_lister_->Remove(kNearbyServiceName);
task_environment_.FastForwardUntilNoTasksRemain();
EXPECT_EQ(observer_.num_services_lost, 1);
EXPECT_TRUE(observer_.lost_info_);
EXPECT_EQ(observer_.lost_info_->service_name, kNearbyServiceName);
EXPECT_EQ(observer_.lost_info_->service_type, kNearbyServiceType);
EXPECT_FALSE(observer_.lost_info_->ip_address);
EXPECT_FALSE(observer_.lost_info_->port);
EXPECT_FALSE(observer_.lost_info_->txt_records);
}
|
