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 (c) 2010 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 "base/time.h"
#include "chrome/browser/prerender/prerender_contents.h"
#include "chrome/browser/prerender/prerender_manager.h"
#include "googleurl/src/gurl.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace {
class DummyPrerenderContents : public PrerenderContents {
public:
DummyPrerenderContents(PrerenderManager* prerender_manager, const GURL& url)
: PrerenderContents(prerender_manager, NULL, url),
has_started_(false) {
}
virtual void StartPrerendering() {
has_started_ = true;
}
bool has_started() const { return has_started_; }
private:
bool has_started_;
};
class TestPrerenderManager : public PrerenderManager {
public:
TestPrerenderManager()
: PrerenderManager(NULL),
time_(base::Time::Now()),
next_pc_(NULL) {
}
void AdvanceTime(base::TimeDelta delta) {
time_ += delta;
}
void SetNextPrerenderContents(PrerenderContents* pc) {
next_pc_.reset(pc);
}
PrerenderContents* next_pc() { return next_pc_.get(); }
protected:
virtual base::Time GetCurrentTime() const {
return time_;
}
virtual PrerenderContents* CreatePrerenderContents(const GURL& url) {
return next_pc_.release();
}
private:
base::Time time_;
scoped_ptr<PrerenderContents> next_pc_;
};
} // namespace
class PrerenderManagerTest : public testing::Test {
public:
PrerenderManagerTest() : prerender_manager_(new TestPrerenderManager()) {
}
protected:
scoped_ptr<TestPrerenderManager> prerender_manager_;
};
TEST_F(PrerenderManagerTest, EmptyTest) {
GURL url("http://www.google.com/");
EXPECT_FALSE(prerender_manager_->MaybeUsePreloadedPage(NULL, url));
}
TEST_F(PrerenderManagerTest, FoundTest) {
GURL url("http://www.google.com/");
DummyPrerenderContents* pc =
new DummyPrerenderContents(prerender_manager_.get(), url);
prerender_manager_->SetNextPrerenderContents(pc);
prerender_manager_->AddPreload(url);
EXPECT_TRUE(pc->has_started());
EXPECT_EQ(pc, prerender_manager_->GetEntry(url));
delete pc;
}
// Make sure that if queue a request, and a second prerender request for the
// same URL comes in, that we drop the second request and keep the first one.
TEST_F(PrerenderManagerTest, DropSecondRequestTest) {
GURL url("http://www.google.com/");
DummyPrerenderContents* pc =
new DummyPrerenderContents(prerender_manager_.get(), url);
DummyPrerenderContents* null = NULL;
prerender_manager_->SetNextPrerenderContents(pc);
prerender_manager_->AddPreload(url);
EXPECT_EQ(null, prerender_manager_->next_pc());
EXPECT_TRUE(pc->has_started());
DummyPrerenderContents* pc1 =
new DummyPrerenderContents(prerender_manager_.get(), url);
prerender_manager_->SetNextPrerenderContents(pc1);
prerender_manager_->AddPreload(url);
EXPECT_EQ(pc1, prerender_manager_->next_pc());
EXPECT_FALSE(pc1->has_started());
EXPECT_EQ(pc, prerender_manager_->GetEntry(url));
delete pc;
}
// Ensure that we expire a prerendered page after the max. permitted time.
TEST_F(PrerenderManagerTest, ExpireTest) {
GURL url("http://www.google.com/");
DummyPrerenderContents* pc =
new DummyPrerenderContents(prerender_manager_.get(), url);
DummyPrerenderContents* null = NULL;
prerender_manager_->SetNextPrerenderContents(pc);
prerender_manager_->AddPreload(url);
EXPECT_EQ(null, prerender_manager_->next_pc());
EXPECT_TRUE(pc->has_started());
prerender_manager_->AdvanceTime(prerender_manager_->max_prerender_age()
+ base::TimeDelta::FromSeconds(1));
EXPECT_EQ(null, prerender_manager_->GetEntry(url));
}
// LRU Test. Make sure that if we prerender more than one request, that
// the oldest one will be dropped.
TEST_F(PrerenderManagerTest, DropOldestRequestTest) {
GURL url("http://www.google.com/");
DummyPrerenderContents* pc =
new DummyPrerenderContents(prerender_manager_.get(), url);
DummyPrerenderContents* null = NULL;
prerender_manager_->SetNextPrerenderContents(pc);
prerender_manager_->AddPreload(url);
EXPECT_EQ(null, prerender_manager_->next_pc());
EXPECT_TRUE(pc->has_started());
GURL url1("http://news.google.com/");
DummyPrerenderContents* pc1 =
new DummyPrerenderContents(prerender_manager_.get(), url1);
prerender_manager_->SetNextPrerenderContents(pc1);
prerender_manager_->AddPreload(url1);
EXPECT_EQ(null, prerender_manager_->next_pc());
EXPECT_TRUE(pc1->has_started());
EXPECT_EQ(null, prerender_manager_->GetEntry(url));
EXPECT_EQ(pc1, prerender_manager_->GetEntry(url1));
delete pc1;
}
// Two element prerender test. Ensure that the LRU operates correctly if we
// permit 2 elements to be kept prerendered.
TEST_F(PrerenderManagerTest, TwoElementPrerenderTest) {
prerender_manager_->set_max_elements(2);
GURL url("http://www.google.com/");
DummyPrerenderContents* pc =
new DummyPrerenderContents(prerender_manager_.get(), url);
DummyPrerenderContents* null = NULL;
prerender_manager_->SetNextPrerenderContents(pc);
prerender_manager_->AddPreload(url);
EXPECT_EQ(null, prerender_manager_->next_pc());
EXPECT_TRUE(pc->has_started());
GURL url1("http://news.google.com/");
DummyPrerenderContents* pc1 =
new DummyPrerenderContents(prerender_manager_.get(), url1);
prerender_manager_->SetNextPrerenderContents(pc1);
prerender_manager_->AddPreload(url1);
EXPECT_EQ(null, prerender_manager_->next_pc());
EXPECT_TRUE(pc1->has_started());
GURL url2("http://images.google.com/");
DummyPrerenderContents* pc2 =
new DummyPrerenderContents(prerender_manager_.get(), url2);
prerender_manager_->SetNextPrerenderContents(pc2);
prerender_manager_->AddPreload(url2);
EXPECT_EQ(null, prerender_manager_->next_pc());
EXPECT_TRUE(pc2->has_started());
EXPECT_EQ(null, prerender_manager_->GetEntry(url));
EXPECT_EQ(pc1, prerender_manager_->GetEntry(url1));
EXPECT_EQ(pc2, prerender_manager_->GetEntry(url2));
delete pc1;
delete pc2;
}
|
