sync/engine/build_commit_command_unittest.cc

   1 // Copyright (c) 2012 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 "sync/engine/build_commit_command.h"
   6 #include "sync/test/engine/syncer_command_test.h"
   7
   8 namespace syncer {
   9
  10 // A test fixture for tests exercising ClearDataCommandTest.
  11 class BuildCommitCommandTest : public SyncerCommandTest {
  12  protected:
  13   BuildCommitCommandTest()
  14     : batch_commit_set_(ModelSafeRoutingInfo()),
  15       command_(batch_commit_set_, &commit_message_) {
  16   }
  17
  18  private:
  19   sessions::OrderedCommitSet batch_commit_set_;
  20   ClientToServerMessage commit_message_;
  21
  22  protected:
  23   BuildCommitCommand command_;
  24
  25  private:
  26   DISALLOW_COPY_AND_ASSIGN(BuildCommitCommandTest);
  27 };
  28
  29 TEST_F(BuildCommitCommandTest, InterpolatePosition) {
  30   EXPECT_LT(BuildCommitCommand::GetFirstPosition(),
  31             BuildCommitCommand::GetLastPosition());
  32
  33   // Dense ranges.
  34   EXPECT_EQ(10, command_.InterpolatePosition(10, 10));
  35   EXPECT_EQ(11, command_.InterpolatePosition(10, 11));
  36   EXPECT_EQ(11, command_.InterpolatePosition(10, 12));
  37   EXPECT_EQ(11, command_.InterpolatePosition(10, 13));
  38   EXPECT_EQ(11, command_.InterpolatePosition(10, 14));
  39   EXPECT_EQ(11, command_.InterpolatePosition(10, 15));
  40   EXPECT_EQ(11, command_.InterpolatePosition(10, 16));
  41   EXPECT_EQ(11, command_.InterpolatePosition(10, 17));
  42   EXPECT_EQ(11, command_.InterpolatePosition(10, 18));
  43   EXPECT_EQ(12, command_.InterpolatePosition(10, 19));
  44   EXPECT_EQ(12, command_.InterpolatePosition(10, 20));
  45
  46   // Sparse ranges.
  47   EXPECT_EQ(0x32535ffe3dc97LL + BuildCommitCommand::GetGap(),
  48       command_.InterpolatePosition(0x32535ffe3dc97LL, 0x61abcd323122cLL));
  49   EXPECT_EQ(~0x61abcd323122cLL + BuildCommitCommand::GetGap(),
  50       command_.InterpolatePosition(~0x61abcd323122cLL, ~0x32535ffe3dc97LL));
  51
  52   // Lower limits
  53   EXPECT_EQ(BuildCommitCommand::GetFirstPosition() + 0x20,
  54       command_.InterpolatePosition(
  55           BuildCommitCommand::GetFirstPosition(),
  56           BuildCommitCommand::GetFirstPosition() + 0x100));
  57   EXPECT_EQ(BuildCommitCommand::GetFirstPosition() + 2,
  58       command_.InterpolatePosition(BuildCommitCommand::GetFirstPosition() + 1,
  59                                    BuildCommitCommand::GetFirstPosition() + 2));
  60   EXPECT_EQ(BuildCommitCommand::GetFirstPosition() +
  61             BuildCommitCommand::GetGap()/8 + 1,
  62       command_.InterpolatePosition(
  63           BuildCommitCommand::GetFirstPosition() + 1,
  64           BuildCommitCommand::GetFirstPosition() + 1 +
  65           BuildCommitCommand::GetGap()));
  66
  67   // Extremal cases.
  68   EXPECT_EQ(0,
  69       command_.InterpolatePosition(BuildCommitCommand::GetFirstPosition(),
  70                                    BuildCommitCommand::GetLastPosition()));
  71   EXPECT_EQ(BuildCommitCommand::GetFirstPosition() + 1 +
  72             BuildCommitCommand::GetGap(),
  73       command_.InterpolatePosition(BuildCommitCommand::GetFirstPosition() + 1,
  74                                    BuildCommitCommand::GetLastPosition()));
  75   EXPECT_EQ(BuildCommitCommand::GetFirstPosition() + 1 +
  76             BuildCommitCommand::GetGap(),
  77       command_.InterpolatePosition(BuildCommitCommand::GetFirstPosition() + 1,
  78                                    BuildCommitCommand::GetLastPosition() - 1));
  79   EXPECT_EQ(BuildCommitCommand::GetLastPosition() - 1 -
  80             BuildCommitCommand::GetGap(),
  81       command_.InterpolatePosition(BuildCommitCommand::GetFirstPosition(),
  82                                    BuildCommitCommand::GetLastPosition() - 1));
  83
  84   // Edge cases around zero.
  85   EXPECT_EQ(BuildCommitCommand::GetGap(),
  86       command_.InterpolatePosition(0, BuildCommitCommand::GetLastPosition()));
  87   EXPECT_EQ(BuildCommitCommand::GetGap() + 1,
  88       command_.InterpolatePosition(1, BuildCommitCommand::GetLastPosition()));
  89   EXPECT_EQ(BuildCommitCommand::GetGap() - 1,
  90       command_.InterpolatePosition(-1, BuildCommitCommand::GetLastPosition()));
  91   EXPECT_EQ(-BuildCommitCommand::GetGap(),
  92       command_.InterpolatePosition(BuildCommitCommand::GetFirstPosition(), 0));
  93   EXPECT_EQ(-BuildCommitCommand::GetGap() + 1,
  94       command_.InterpolatePosition(BuildCommitCommand::GetFirstPosition(), 1));
  95   EXPECT_EQ(-BuildCommitCommand::GetGap() - 1,
  96       command_.InterpolatePosition(BuildCommitCommand::GetFirstPosition(), -1));
  97   EXPECT_EQ(BuildCommitCommand::GetGap() / 8,
  98       command_.InterpolatePosition(0, BuildCommitCommand::GetGap()));
  99   EXPECT_EQ(BuildCommitCommand::GetGap() / 4,
 100       command_.InterpolatePosition(0, BuildCommitCommand::GetGap()*2));
 101   EXPECT_EQ(BuildCommitCommand::GetGap(),
 102       command_.InterpolatePosition(0, BuildCommitCommand::GetGap()*2 + 1));
 103 }
 104
 105 }  // namespace syncer