1 //
2 // Copyright (C) 2017 The Android Open Source Project
3 //
4 // Licensed under the Apache License, Version 2.0 (the "License");
5 // you may not use this file except in compliance with the License.
6 // You may obtain a copy of the License at
7 //
8 //      http://www.apache.org/licenses/LICENSE-2.0
9 //
10 // Unless required by applicable law or agreed to in writing, software
11 // distributed under the License is distributed on an "AS IS" BASIS,
12 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 // See the License for the specific language governing permissions and
14 // limitations under the License.
15 //
16 
17 #include "update_engine/common/proxy_resolver.h"
18 
19 #include <deque>
20 #include <string>
21 
22 #include <gtest/gtest.h>
23 
24 #include <base/bind.h>
25 #include <brillo/message_loops/fake_message_loop.h>
26 
27 using std::deque;
28 using std::string;
29 
30 namespace chromeos_update_engine {
31 
32 class ProxyResolverTest : public ::testing::Test {
33  protected:
34   virtual ~ProxyResolverTest() = default;
35 
36   void SetUp() override { loop_.SetAsCurrent(); }
37 
38   void TearDown() override { EXPECT_FALSE(loop_.PendingTasks()); }
39 
40   brillo::FakeMessageLoop loop_{nullptr};
41   DirectProxyResolver resolver_;
42 };
43 
44 TEST_F(ProxyResolverTest, DirectProxyResolverCallbackTest) {
45   bool called = false;
46   deque<string> callback_proxies;
47   auto callback = base::Bind(
48       [](bool* called,
49          deque<string>* callback_proxies,
50          const deque<string>& proxies) {
51         *called = true;
52         *callback_proxies = proxies;
53       },
54       &called,
55       &callback_proxies);
56 
57   EXPECT_NE(kProxyRequestIdNull,
58             resolver_.GetProxiesForUrl("http://foo", callback));
59   // Check the callback is not called until the message loop runs.
60   EXPECT_FALSE(called);
61   loop_.Run();
62   EXPECT_TRUE(called);
63   EXPECT_EQ(kNoProxy, callback_proxies.front());
64 }
65 
66 TEST_F(ProxyResolverTest, DirectProxyResolverCancelCallbackTest) {
67   bool called = false;
68   auto callback = base::Bind(
69       [](bool* called, const deque<string>& proxies) { *called = true; },
70       &called);
71 
72   ProxyRequestId request = resolver_.GetProxiesForUrl("http://foo", callback);
73   EXPECT_FALSE(called);
74   EXPECT_TRUE(resolver_.CancelProxyRequest(request));
75   loop_.Run();
76   EXPECT_FALSE(called);
77 }
78 
79 TEST_F(ProxyResolverTest, DirectProxyResolverSimultaneousCallbacksTest) {
80   int called = 0;
81   auto callback = base::Bind(
82       [](int* called, const deque<string>& proxies) { (*called)++; }, &called);
83 
84   resolver_.GetProxiesForUrl("http://foo", callback);
85   resolver_.GetProxiesForUrl("http://bar", callback);
86   EXPECT_EQ(0, called);
87   loop_.Run();
88   EXPECT_EQ(2, called);
89 }
90 
91 }  // namespace chromeos_update_engine
92