Make HPACK static table static and immutable.

net/spdy/hpack_static_table_test.cc

+// 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_static_table.h"
+
+#include <vector>
+
+#include "net/base/net_export.h"
+#include "net/spdy/hpack_constants.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace net {
+
+namespace test {
+
+namespace {
+
+class HpackStaticTableTest : public ::testing::Test {
+ protected:
+  HpackStaticTableTest() : table_() {}
+
+  HpackStaticTable table_;
+};
+
+// Check that an initialized instance has the right number of entries.
+TEST_F(HpackStaticTableTest, Initialize) {
+  EXPECT_FALSE(table_.IsInitialized());
+  std::vector<HpackStaticEntry> static_table = HpackStaticTableVector();
+  table_.Initialize(&static_table[0], static_table.size());
+  EXPECT_TRUE(table_.IsInitialized());
+
+  HpackHeaderTable::EntryTable static_entries = table_.GetStaticEntries();
+  EXPECT_EQ(static_table.size(), static_entries.size());
+
+  HpackHeaderTable::OrderedEntrySet static_index = table_.GetStaticIndex();
+  EXPECT_EQ(static_table.size(), static_index.size());
+}
+
+// Test that ObtainHpackStaticTable returns the same instance every time.
+TEST_F(HpackStaticTableTest, IsSingleton) {
+  const HpackStaticTable* static_table_one = &ObtainHpackStaticTable();
+  const HpackStaticTable* static_table_two = &ObtainHpackStaticTable();
+  EXPECT_EQ(static_table_one, static_table_two);
+}
+
+}  // namespace
+
+}  // namespace test
+
+}  // namespace net