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// Copyright (c) 2011 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 "chrome/browser/sync/engine/build_commit_command.h"
#include "chrome/test/sync/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::kFirstPosition,
BuildCommitCommand::kLastPosition);
// 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::kGap,
command_.InterpolatePosition(0x32535ffe3dc97LL, 0x61abcd323122cLL));
EXPECT_EQ(~0x61abcd323122cLL + BuildCommitCommand::kGap,
command_.InterpolatePosition(~0x61abcd323122cLL, ~0x32535ffe3dc97LL));
// Lower limits
EXPECT_EQ(BuildCommitCommand::kFirstPosition + 0x20,
command_.InterpolatePosition(BuildCommitCommand::kFirstPosition,
BuildCommitCommand::kFirstPosition + 0x100));
EXPECT_EQ(BuildCommitCommand::kFirstPosition + 2,
command_.InterpolatePosition(BuildCommitCommand::kFirstPosition + 1,
BuildCommitCommand::kFirstPosition + 2));
EXPECT_EQ(BuildCommitCommand::kFirstPosition + BuildCommitCommand::kGap/8 + 1,
command_.InterpolatePosition(
BuildCommitCommand::kFirstPosition + 1,
BuildCommitCommand::kFirstPosition + 1 + BuildCommitCommand::kGap));
// Extremal cases.
EXPECT_EQ(0,
command_.InterpolatePosition(BuildCommitCommand::kFirstPosition,
BuildCommitCommand::kLastPosition));
EXPECT_EQ(BuildCommitCommand::kFirstPosition + 1 + BuildCommitCommand::kGap,
command_.InterpolatePosition(BuildCommitCommand::kFirstPosition + 1,
BuildCommitCommand::kLastPosition));
EXPECT_EQ(BuildCommitCommand::kFirstPosition + 1 + BuildCommitCommand::kGap,
command_.InterpolatePosition(BuildCommitCommand::kFirstPosition + 1,
BuildCommitCommand::kLastPosition - 1));
EXPECT_EQ(BuildCommitCommand::kLastPosition - 1 - BuildCommitCommand::kGap,
command_.InterpolatePosition(BuildCommitCommand::kFirstPosition,
BuildCommitCommand::kLastPosition - 1));
// Edge cases around zero.
EXPECT_EQ(BuildCommitCommand::kGap,
command_.InterpolatePosition(0, BuildCommitCommand::kLastPosition));
EXPECT_EQ(BuildCommitCommand::kGap + 1,
command_.InterpolatePosition(1, BuildCommitCommand::kLastPosition));
EXPECT_EQ(BuildCommitCommand::kGap - 1,
command_.InterpolatePosition(-1, BuildCommitCommand::kLastPosition));
EXPECT_EQ(-BuildCommitCommand::kGap,
command_.InterpolatePosition(BuildCommitCommand::kFirstPosition, 0));
EXPECT_EQ(-BuildCommitCommand::kGap + 1,
command_.InterpolatePosition(BuildCommitCommand::kFirstPosition, 1));
EXPECT_EQ(-BuildCommitCommand::kGap - 1,
command_.InterpolatePosition(BuildCommitCommand::kFirstPosition, -1));
EXPECT_EQ(BuildCommitCommand::kGap / 8,
command_.InterpolatePosition(0, BuildCommitCommand::kGap));
EXPECT_EQ(BuildCommitCommand::kGap / 4,
command_.InterpolatePosition(0, BuildCommitCommand::kGap*2));
EXPECT_EQ(BuildCommitCommand::kGap,
command_.InterpolatePosition(0, BuildCommitCommand::kGap*2 + 1));
}
} // namespace browser_sync
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