1 // Copyright 2015 The Chromium Authors
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "net/disk_cache/blockfile/stats.h"
6
7 #include <memory>
8
9 #include "testing/gtest/include/gtest/gtest.h"
10
TEST(DiskCacheStatsTest,Init)11 TEST(DiskCacheStatsTest, Init) {
12 disk_cache::Stats stats;
13 EXPECT_TRUE(stats.Init(nullptr, 0, disk_cache::Addr()));
14 EXPECT_EQ(0, stats.GetCounter(disk_cache::Stats::TRIM_ENTRY));
15 }
16
TEST(DiskCacheStatsTest,InitWithEmptyBuffer)17 TEST(DiskCacheStatsTest, InitWithEmptyBuffer) {
18 disk_cache::Stats stats;
19 int required_len = stats.StorageSize();
20 auto storage = std::make_unique<char[]>(required_len);
21 memset(storage.get(), 0, required_len);
22
23 ASSERT_TRUE(stats.Init(storage.get(), required_len, disk_cache::Addr()));
24 EXPECT_EQ(0, stats.GetCounter(disk_cache::Stats::TRIM_ENTRY));
25 }
26
TEST(DiskCacheStatsTest,FailsInit)27 TEST(DiskCacheStatsTest, FailsInit) {
28 disk_cache::Stats stats;
29 int required_len = stats.StorageSize();
30 auto storage = std::make_unique<char[]>(required_len);
31 memset(storage.get(), 0, required_len);
32
33 // Try a small buffer.
34 EXPECT_LT(200, required_len);
35 disk_cache::Addr addr;
36 EXPECT_FALSE(stats.Init(storage.get(), 200, addr));
37
38 // Try a buffer with garbage.
39 memset(storage.get(), 'a', required_len);
40 EXPECT_FALSE(stats.Init(storage.get(), required_len, addr));
41 }
42
TEST(DiskCacheStatsTest,SaveRestore)43 TEST(DiskCacheStatsTest, SaveRestore) {
44 auto stats = std::make_unique<disk_cache::Stats>();
45
46 disk_cache::Addr addr(5);
47 ASSERT_TRUE(stats->Init(nullptr, 0, addr));
48 stats->SetCounter(disk_cache::Stats::CREATE_ERROR, 11);
49 stats->SetCounter(disk_cache::Stats::DOOM_ENTRY, 13);
50 stats->OnEvent(disk_cache::Stats::MIN_COUNTER);
51 stats->OnEvent(disk_cache::Stats::TRIM_ENTRY);
52 stats->OnEvent(disk_cache::Stats::DOOM_RECENT);
53
54 int required_len = stats->StorageSize();
55 auto storage = std::make_unique<char[]>(required_len);
56 disk_cache::Addr out_addr;
57 int real_len = stats->SerializeStats(storage.get(), required_len, &out_addr);
58 EXPECT_GE(required_len, real_len);
59 EXPECT_EQ(out_addr, addr);
60
61 stats = std::make_unique<disk_cache::Stats>();
62 ASSERT_TRUE(stats->Init(storage.get(), real_len, addr));
63 EXPECT_EQ(1, stats->GetCounter(disk_cache::Stats::MIN_COUNTER));
64 EXPECT_EQ(1, stats->GetCounter(disk_cache::Stats::TRIM_ENTRY));
65 EXPECT_EQ(1, stats->GetCounter(disk_cache::Stats::DOOM_RECENT));
66 EXPECT_EQ(0, stats->GetCounter(disk_cache::Stats::OPEN_HIT));
67 EXPECT_EQ(0, stats->GetCounter(disk_cache::Stats::READ_DATA));
68 EXPECT_EQ(0, stats->GetCounter(disk_cache::Stats::LAST_REPORT_TIMER));
69 EXPECT_EQ(11, stats->GetCounter(disk_cache::Stats::CREATE_ERROR));
70 EXPECT_EQ(13, stats->GetCounter(disk_cache::Stats::DOOM_ENTRY));
71
72 // Now pass the whole buffer. It shoulod not matter that there is unused
73 // space at the end.
74 stats = std::make_unique<disk_cache::Stats>();
75 ASSERT_TRUE(stats->Init(storage.get(), required_len, addr));
76 EXPECT_EQ(1, stats->GetCounter(disk_cache::Stats::MIN_COUNTER));
77 EXPECT_EQ(1, stats->GetCounter(disk_cache::Stats::TRIM_ENTRY));
78 EXPECT_EQ(1, stats->GetCounter(disk_cache::Stats::DOOM_RECENT));
79 EXPECT_EQ(0, stats->GetCounter(disk_cache::Stats::OPEN_HIT));
80 EXPECT_EQ(0, stats->GetCounter(disk_cache::Stats::READ_DATA));
81 EXPECT_EQ(0, stats->GetCounter(disk_cache::Stats::LAST_REPORT_TIMER));
82 EXPECT_EQ(11, stats->GetCounter(disk_cache::Stats::CREATE_ERROR));
83 EXPECT_EQ(13, stats->GetCounter(disk_cache::Stats::DOOM_ENTRY));
84 }
85