* feat:Add more sync tests
Signed-off-by: Chen Kai <281165273grape@gmail.com>

* feat:add more sync tests
Signed-off-by: Chen Kai <281165273grape@gmail.com>

* fix:fix failed tests
Signed-off-by: Chen Kai <281165273grape@gmail.com>

* fix:add copyright credit and remove unused code
Signed-off-by: Chen Kai <281165273grape@gmail.com>

* fix:fix copyright format
Signed-off-by: Chen Kai <281165273grape@gmail.com>

* fix code review suggestions
Signed-off-by: Chen Kai <281165273grape@gmail.com>

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Signed-off-by: Chen Kai <281165273grape@gmail.com>