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// Copyright 2014 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 "net/spdy/hpack_entry.h"
#include <string>
#include "testing/gtest/include/gtest/gtest.h"
namespace net {
namespace {
using std::string;
class HpackEntryTest : public ::testing::Test {
protected:
HpackEntryTest()
: name_("header-name"),
value_("header value"),
total_insertions_(0),
table_size_(0) {}
// These builders maintain the same external table invariants that a "real"
// table (ie HpackHeaderTable) would.
HpackEntry StaticEntry() {
return HpackEntry(name_, value_, true, total_insertions_++);
}
HpackEntry DynamicEntry() {
++table_size_;
size_t index = total_insertions_++;
return HpackEntry(name_, value_, false, index);
}
void DropEntry() { --table_size_; }
size_t IndexOf(const HpackEntry& entry) const {
if (entry.IsStatic()) {
return 1 + entry.InsertionIndex() + table_size_;
} else {
return total_insertions_ - entry.InsertionIndex();
}
}
size_t Size() {
return name_.size() + value_.size() + HpackEntry::kSizeOverhead;
}
string name_, value_;
private:
// Referenced by HpackEntry instances.
size_t total_insertions_;
size_t table_size_;
};
TEST_F(HpackEntryTest, StaticConstructor) {
HpackEntry entry(StaticEntry());
EXPECT_EQ(name_, entry.name());
EXPECT_EQ(value_, entry.value());
EXPECT_TRUE(entry.IsStatic());
EXPECT_EQ(1u, IndexOf(entry));
EXPECT_EQ(Size(), entry.Size());
}
TEST_F(HpackEntryTest, DynamicConstructor) {
HpackEntry entry(DynamicEntry());
EXPECT_EQ(name_, entry.name());
EXPECT_EQ(value_, entry.value());
EXPECT_FALSE(entry.IsStatic());
EXPECT_EQ(1u, IndexOf(entry));
EXPECT_EQ(Size(), entry.Size());
}
TEST_F(HpackEntryTest, LookupConstructor) {
HpackEntry entry(name_, value_);
EXPECT_EQ(name_, entry.name());
EXPECT_EQ(value_, entry.value());
EXPECT_FALSE(entry.IsStatic());
EXPECT_EQ(0u, IndexOf(entry));
EXPECT_EQ(Size(), entry.Size());
}
TEST_F(HpackEntryTest, DefaultConstructor) {
HpackEntry entry;
EXPECT_TRUE(entry.name().empty());
EXPECT_TRUE(entry.value().empty());
EXPECT_EQ(HpackEntry::kSizeOverhead, entry.Size());
}
TEST_F(HpackEntryTest, IndexUpdate) {
HpackEntry static1(StaticEntry());
HpackEntry static2(StaticEntry());
EXPECT_EQ(1u, IndexOf(static1));
EXPECT_EQ(2u, IndexOf(static2));
HpackEntry dynamic1(DynamicEntry());
HpackEntry dynamic2(DynamicEntry());
EXPECT_EQ(1u, IndexOf(dynamic2));
EXPECT_EQ(2u, IndexOf(dynamic1));
EXPECT_EQ(3u, IndexOf(static1));
EXPECT_EQ(4u, IndexOf(static2));
DropEntry(); // Drops |dynamic1|.
EXPECT_EQ(1u, IndexOf(dynamic2));
EXPECT_EQ(2u, IndexOf(static1));
EXPECT_EQ(3u, IndexOf(static2));
HpackEntry dynamic3(DynamicEntry());
EXPECT_EQ(1u, IndexOf(dynamic3));
EXPECT_EQ(2u, IndexOf(dynamic2));
EXPECT_EQ(3u, IndexOf(static1));
EXPECT_EQ(4u, IndexOf(static2));
}
} // namespace
} // namespace net
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