1// Copyright 2014 The Chromium Authors. All rights reserved.
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/spdy/hpack_entry.h"
6
7#include <string>
8
9#include "testing/gtest/include/gtest/gtest.h"
10
11namespace net {
12
13namespace {
14
15using std::string;
16
17class HpackEntryTest : public ::testing::Test {
18 protected:
19  HpackEntryTest()
20      : name_("header-name"),
21        value_("header value"),
22        total_insertions_(0),
23        table_size_(0) {}
24
25  // These builders maintain the same external table invariants that a "real"
26  // table (ie HpackHeaderTable) would.
27  HpackEntry StaticEntry() {
28    return HpackEntry(name_, value_, true, total_insertions_++);
29  }
30  HpackEntry DynamicEntry() {
31    ++table_size_;
32    size_t index = total_insertions_++;
33    return HpackEntry(name_, value_, false, index);
34  }
35  void DropEntry() { --table_size_; }
36
37  size_t IndexOf(const HpackEntry& entry) const {
38    if (entry.IsStatic()) {
39      return 1 + entry.InsertionIndex() + table_size_;
40    } else {
41      return total_insertions_ - entry.InsertionIndex();
42    }
43  }
44
45  size_t Size() {
46    return name_.size() + value_.size() + HpackEntry::kSizeOverhead;
47  }
48
49  string name_, value_;
50
51 private:
52  // Referenced by HpackEntry instances.
53  size_t total_insertions_;
54  size_t table_size_;
55};
56
57TEST_F(HpackEntryTest, StaticConstructor) {
58  HpackEntry entry(StaticEntry());
59
60  EXPECT_EQ(name_, entry.name());
61  EXPECT_EQ(value_, entry.value());
62  EXPECT_TRUE(entry.IsStatic());
63  EXPECT_EQ(1u, IndexOf(entry));
64  EXPECT_EQ(Size(), entry.Size());
65}
66
67TEST_F(HpackEntryTest, DynamicConstructor) {
68  HpackEntry entry(DynamicEntry());
69
70  EXPECT_EQ(name_, entry.name());
71  EXPECT_EQ(value_, entry.value());
72  EXPECT_FALSE(entry.IsStatic());
73  EXPECT_EQ(1u, IndexOf(entry));
74  EXPECT_EQ(Size(), entry.Size());
75}
76
77TEST_F(HpackEntryTest, LookupConstructor) {
78  HpackEntry entry(name_, value_);
79
80  EXPECT_EQ(name_, entry.name());
81  EXPECT_EQ(value_, entry.value());
82  EXPECT_FALSE(entry.IsStatic());
83  EXPECT_EQ(0u, IndexOf(entry));
84  EXPECT_EQ(Size(), entry.Size());
85}
86
87TEST_F(HpackEntryTest, DefaultConstructor) {
88  HpackEntry entry;
89
90  EXPECT_TRUE(entry.name().empty());
91  EXPECT_TRUE(entry.value().empty());
92  EXPECT_EQ(HpackEntry::kSizeOverhead, entry.Size());
93}
94
95TEST_F(HpackEntryTest, IndexUpdate) {
96  HpackEntry static1(StaticEntry());
97  HpackEntry static2(StaticEntry());
98
99  EXPECT_EQ(1u, IndexOf(static1));
100  EXPECT_EQ(2u, IndexOf(static2));
101
102  HpackEntry dynamic1(DynamicEntry());
103  HpackEntry dynamic2(DynamicEntry());
104
105  EXPECT_EQ(1u, IndexOf(dynamic2));
106  EXPECT_EQ(2u, IndexOf(dynamic1));
107  EXPECT_EQ(3u, IndexOf(static1));
108  EXPECT_EQ(4u, IndexOf(static2));
109
110  DropEntry();  // Drops |dynamic1|.
111
112  EXPECT_EQ(1u, IndexOf(dynamic2));
113  EXPECT_EQ(2u, IndexOf(static1));
114  EXPECT_EQ(3u, IndexOf(static2));
115
116  HpackEntry dynamic3(DynamicEntry());
117
118  EXPECT_EQ(1u, IndexOf(dynamic3));
119  EXPECT_EQ(2u, IndexOf(dynamic2));
120  EXPECT_EQ(3u, IndexOf(static1));
121  EXPECT_EQ(4u, IndexOf(static2));
122}
123
124}  // namespace
125
126}  // namespace net
127