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// 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 "sync/engine/build_commit_command.h"
#include "sync/test/engine/syncer_command_test.h"
namespace browser_sync {
// A test fixture for tests exercising ClearDataCommandTest.
class BuildCommitCommandTest : public SyncerCommandTest {
protected:
BuildCommitCommandTest() {}
BuildCommitCommand command_;
private:
DISALLOW_COPY_AND_ASSIGN(BuildCommitCommandTest);
};
TEST_F(BuildCommitCommandTest, InterpolatePosition) {
EXPECT_LT(BuildCommitCommand::GetFirstPosition(),
BuildCommitCommand::GetLastPosition());
// Dense ranges.
EXPECT_EQ(10, command_.InterpolatePosition(10, 10));
EXPECT_EQ(11, command_.InterpolatePosition(10, 11));
EXPECT_EQ(11, command_.InterpolatePosition(10, 12));
EXPECT_EQ(11, command_.InterpolatePosition(10, 13));
EXPECT_EQ(11, command_.InterpolatePosition(10, 14));
EXPECT_EQ(11, command_.InterpolatePosition(10, 15));
EXPECT_EQ(11, command_.InterpolatePosition(10, 16));
EXPECT_EQ(11, command_.InterpolatePosition(10, 17));
EXPECT_EQ(11, command_.InterpolatePosition(10, 18));
EXPECT_EQ(12, command_.InterpolatePosition(10, 19));
EXPECT_EQ(12, command_.InterpolatePosition(10, 20));
// Sparse ranges.
EXPECT_EQ(0x32535ffe3dc97LL + BuildCommitCommand::GetGap(),
command_.InterpolatePosition(0x32535ffe3dc97LL, 0x61abcd323122cLL));
EXPECT_EQ(~0x61abcd323122cLL + BuildCommitCommand::GetGap(),
command_.InterpolatePosition(~0x61abcd323122cLL, ~0x32535ffe3dc97LL));
// Lower limits
EXPECT_EQ(BuildCommitCommand::GetFirstPosition() + 0x20,
command_.InterpolatePosition(
BuildCommitCommand::GetFirstPosition(),
BuildCommitCommand::GetFirstPosition() + 0x100));
EXPECT_EQ(BuildCommitCommand::GetFirstPosition() + 2,
command_.InterpolatePosition(BuildCommitCommand::GetFirstPosition() + 1,
BuildCommitCommand::GetFirstPosition() + 2));
EXPECT_EQ(BuildCommitCommand::GetFirstPosition() +
BuildCommitCommand::GetGap()/8 + 1,
command_.InterpolatePosition(
BuildCommitCommand::GetFirstPosition() + 1,
BuildCommitCommand::GetFirstPosition() + 1 +
BuildCommitCommand::GetGap()));
// Extremal cases.
EXPECT_EQ(0,
command_.InterpolatePosition(BuildCommitCommand::GetFirstPosition(),
BuildCommitCommand::GetLastPosition()));
EXPECT_EQ(BuildCommitCommand::GetFirstPosition() + 1 +
BuildCommitCommand::GetGap(),
command_.InterpolatePosition(BuildCommitCommand::GetFirstPosition() + 1,
BuildCommitCommand::GetLastPosition()));
EXPECT_EQ(BuildCommitCommand::GetFirstPosition() + 1 +
BuildCommitCommand::GetGap(),
command_.InterpolatePosition(BuildCommitCommand::GetFirstPosition() + 1,
BuildCommitCommand::GetLastPosition() - 1));
EXPECT_EQ(BuildCommitCommand::GetLastPosition() - 1 -
BuildCommitCommand::GetGap(),
command_.InterpolatePosition(BuildCommitCommand::GetFirstPosition(),
BuildCommitCommand::GetLastPosition() - 1));
// Edge cases around zero.
EXPECT_EQ(BuildCommitCommand::GetGap(),
command_.InterpolatePosition(0, BuildCommitCommand::GetLastPosition()));
EXPECT_EQ(BuildCommitCommand::GetGap() + 1,
command_.InterpolatePosition(1, BuildCommitCommand::GetLastPosition()));
EXPECT_EQ(BuildCommitCommand::GetGap() - 1,
command_.InterpolatePosition(-1, BuildCommitCommand::GetLastPosition()));
EXPECT_EQ(-BuildCommitCommand::GetGap(),
command_.InterpolatePosition(BuildCommitCommand::GetFirstPosition(), 0));
EXPECT_EQ(-BuildCommitCommand::GetGap() + 1,
command_.InterpolatePosition(BuildCommitCommand::GetFirstPosition(), 1));
EXPECT_EQ(-BuildCommitCommand::GetGap() - 1,
command_.InterpolatePosition(BuildCommitCommand::GetFirstPosition(), -1));
EXPECT_EQ(BuildCommitCommand::GetGap() / 8,
command_.InterpolatePosition(0, BuildCommitCommand::GetGap()));
EXPECT_EQ(BuildCommitCommand::GetGap() / 4,
command_.InterpolatePosition(0, BuildCommitCommand::GetGap()*2));
EXPECT_EQ(BuildCommitCommand::GetGap(),
command_.InterpolatePosition(0, BuildCommitCommand::GetGap()*2 + 1));
}
} // namespace browser_sync
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