Revert 148055 - Move CachedRanges out and add support for checksum.

base/metrics/bucket_ranges_unittest.cc

-// Copyright (c) 2012 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/metrics/bucket_ranges.h"
-
-#include "testing/gtest/include/gtest/gtest.h"
-
-namespace base {
-namespace {
-
-TEST(BucketRangesTest, NormalSetup) {
-  BucketRanges ranges(5);
-  ASSERT_EQ(5u, ranges.size());
-
-  for (int i = 0; i < 5; i++) {
-    EXPECT_EQ(0, ranges.range(i));
-  }
-  EXPECT_EQ(0u, ranges.checksum());
-
-  ranges.set_range(3, 100);
-  EXPECT_EQ(100, ranges.range(3));
-}
-
-TEST(BucketRangesTest, Equals) {
-  // Compare empty ranges.
-  BucketRanges ranges1(3);
-  BucketRanges ranges2(3);
-  BucketRanges ranges3(5);
-
-  EXPECT_TRUE(ranges1.Equals(&ranges2));
-  EXPECT_FALSE(ranges1.Equals(&ranges3));
-  EXPECT_FALSE(ranges2.Equals(&ranges3));
-
-  // Compare full filled ranges.
-  ranges1.set_range(0, 0);
-  ranges1.set_range(1, 1);
-  ranges1.set_range(2, 2);
-  ranges1.set_checksum(100);
-  ranges2.set_range(0, 0);
-  ranges2.set_range(1, 1);
-  ranges2.set_range(2, 2);
-  ranges2.set_checksum(100);
-
-  EXPECT_TRUE(ranges1.Equals(&ranges2));
-
-  // Checksum does not match.
-  ranges1.set_checksum(99);
-  EXPECT_FALSE(ranges1.Equals(&ranges2));
-  ranges1.set_checksum(100);
-
-  // Range does not match.
-  ranges1.set_range(1, 3);
-  EXPECT_FALSE(ranges1.Equals(&ranges2));
-}
-
-TEST(BucketRangesTest, Checksum) {
-  BucketRanges ranges(3);
-  ranges.set_range(0, 0);
-  ranges.set_range(1, 1);
-  ranges.set_range(2, 2);
-
-  ranges.ResetChecksum();
-  EXPECT_EQ(289217253u, ranges.checksum());
-
-  ranges.set_range(2, 3);
-  EXPECT_FALSE(ranges.HasValidChecksum());
-
-  ranges.ResetChecksum();
-  EXPECT_EQ(2843835776u, ranges.checksum());
-  EXPECT_TRUE(ranges.HasValidChecksum());
-}
-
-}  // namespace
-}  // namespace base