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
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
|
// Copyright 2013 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 "chrome/browser/net/dns_probe_runner.h"
#include <utility>
#include <vector>
#include "base/bind.h"
#include "base/memory/weak_ptr.h"
#include "base/run_loop.h"
#include "chrome/browser/net/dns_probe_test_util.h"
#include "content/public/test/browser_task_environment.h"
#include "mojo/public/cpp/bindings/pending_receiver.h"
#include "services/network/test/test_network_context.h"
#include "testing/gtest/include/gtest/gtest.h"
using base::RunLoop;
using content::BrowserTaskEnvironment;
namespace chrome_browser_net {
namespace {
class TestDnsProbeRunnerCallback {
public:
TestDnsProbeRunnerCallback() : called_(false) {}
base::OnceClosure callback() {
return base::BindOnce(&TestDnsProbeRunnerCallback::OnCalled,
base::Unretained(this));
}
bool called() const { return called_; }
private:
void OnCalled() {
EXPECT_FALSE(called_);
called_ = true;
}
bool called_;
};
class FakeNetworkContext : public network::TestNetworkContext {
public:
explicit FakeNetworkContext(
std::vector<FakeHostResolver::SingleResult> result_list)
: result_list_(std::move(result_list)) {}
void CreateHostResolver(
const base::Optional<net::DnsConfigOverrides>& config_overrides,
mojo::PendingReceiver<network::mojom::HostResolver> receiver) override {
ASSERT_FALSE(resolver_);
resolver_ = std::make_unique<FakeHostResolver>(std::move(receiver),
std::move(result_list_));
}
private:
std::unique_ptr<FakeHostResolver> resolver_;
std::vector<FakeHostResolver::SingleResult> result_list_;
};
class FirstHangingThenFakeResolverNetworkContext
: public network::TestNetworkContext {
public:
explicit FirstHangingThenFakeResolverNetworkContext(
std::vector<FakeHostResolver::SingleResult> result_list)
: result_list_(std::move(result_list)) {}
void CreateHostResolver(
const base::Optional<net::DnsConfigOverrides>& config_overrides,
mojo::PendingReceiver<network::mojom::HostResolver> receiver) override {
if (call_num == 0) {
resolver_ = std::make_unique<HangingHostResolver>(std::move(receiver));
} else {
resolver_ = std::make_unique<FakeHostResolver>(std::move(receiver),
std::move(result_list_));
}
call_num++;
}
void DestroyHostResolver() { resolver_ = nullptr; }
private:
int call_num = 0;
std::unique_ptr<network::mojom::HostResolver> resolver_;
std::vector<FakeHostResolver::SingleResult> result_list_;
};
class DnsProbeRunnerTest : public testing::Test {
protected:
void SetupTest(int query_result, FakeHostResolver::Response query_response);
void SetupTest(std::vector<FakeHostResolver::SingleResult> result_list);
void RunTest(DnsProbeRunner::Result expected_probe_results);
network::mojom::NetworkContext* network_context() const {
return network_context_.get();
}
BrowserTaskEnvironment task_environment_;
std::unique_ptr<network::mojom::NetworkContext> network_context_;
std::unique_ptr<DnsProbeRunner> runner_;
};
void DnsProbeRunnerTest::SetupTest(int query_result,
FakeHostResolver::Response query_response) {
SetupTest({{query_result, query_response}});
}
void DnsProbeRunnerTest::SetupTest(
std::vector<FakeHostResolver::SingleResult> result_list) {
network_context_ =
std::make_unique<FakeNetworkContext>(std::move(result_list));
runner_ = std::make_unique<DnsProbeRunner>(
net::DnsConfigOverrides(),
base::BindRepeating(&DnsProbeRunnerTest::network_context,
base::Unretained(this)));
}
void DnsProbeRunnerTest::RunTest(DnsProbeRunner::Result expected_probe_result) {
TestDnsProbeRunnerCallback callback;
runner_->RunProbe(callback.callback());
EXPECT_TRUE(runner_->IsRunning());
RunLoop().RunUntilIdle();
EXPECT_FALSE(runner_->IsRunning());
EXPECT_TRUE(callback.called());
EXPECT_EQ(expected_probe_result, runner_->result());
}
TEST_F(DnsProbeRunnerTest, Probe_OK) {
SetupTest(net::OK, FakeHostResolver::kOneAddressResponse);
RunTest(DnsProbeRunner::CORRECT);
}
TEST_F(DnsProbeRunnerTest, Probe_EMPTY) {
SetupTest(net::OK, FakeHostResolver::kEmptyResponse);
RunTest(DnsProbeRunner::INCORRECT);
}
TEST_F(DnsProbeRunnerTest, Probe_TIMEOUT) {
SetupTest(net::ERR_DNS_TIMED_OUT, FakeHostResolver::kNoResponse);
RunTest(DnsProbeRunner::UNREACHABLE);
}
TEST_F(DnsProbeRunnerTest, Probe_NXDOMAIN) {
SetupTest(net::ERR_NAME_NOT_RESOLVED, FakeHostResolver::kNoResponse);
RunTest(DnsProbeRunner::INCORRECT);
}
TEST_F(DnsProbeRunnerTest, Probe_FAILING) {
SetupTest(net::ERR_DNS_SERVER_FAILED, FakeHostResolver::kNoResponse);
RunTest(DnsProbeRunner::FAILING);
}
TEST_F(DnsProbeRunnerTest, Probe_DnsNotRun) {
SetupTest(net::ERR_DNS_CACHE_MISS, FakeHostResolver::kNoResponse);
RunTest(DnsProbeRunner::UNKNOWN);
}
TEST_F(DnsProbeRunnerTest, TwoProbes) {
SetupTest({{net::OK, FakeHostResolver::kOneAddressResponse},
{net::ERR_NAME_NOT_RESOLVED, FakeHostResolver::kNoResponse}});
RunTest(DnsProbeRunner::CORRECT);
RunTest(DnsProbeRunner::INCORRECT);
}
TEST_F(DnsProbeRunnerTest, MojoConnectionError) {
// Use a HostResolverGetter that returns a HangingHostResolver on the first
// call, and a FakeHostResolver on the second call.
FirstHangingThenFakeResolverNetworkContext network_context(
{{net::OK, FakeHostResolver::kOneAddressResponse}});
runner_ = std::make_unique<DnsProbeRunner>(
net::DnsConfigOverrides(),
base::BindRepeating(
[](network::mojom::NetworkContext* context) { return context; },
base::Unretained(&network_context)));
TestDnsProbeRunnerCallback callback;
runner_->RunProbe(callback.callback());
EXPECT_TRUE(runner_->IsRunning());
RunLoop().RunUntilIdle();
EXPECT_TRUE(runner_->IsRunning());
EXPECT_FALSE(callback.called());
// Destroy the HangingHostResolver while runner_ is still waiting for a
// response. The set_connection_error_handler callback should be invoked.
network_context.DestroyHostResolver();
RunLoop().RunUntilIdle();
// That should cause the RunProbe callback to be called with an UNKNOWN
// status since the HostResolver request never returned.
EXPECT_FALSE(runner_->IsRunning());
EXPECT_TRUE(callback.called());
EXPECT_EQ(DnsProbeRunner::UNKNOWN, runner_->result());
// Try another probe. The DnsProbeRunner should call the HostResolverGetter
// again, this time getting a FakeHostResolver that will successfully return
// an OK result.
RunTest(DnsProbeRunner::CORRECT);
}
} // namespace
} // namespace chrome_browser_net
|
