update test cases

- fix advanced test not to split chars

Signed-off-by: Hiroshi Miura <miurahr@linux.com>
limit not to copy whole object

Signed-off-by: Hiroshi Miura <miurahr@linux.com>
test: update expected result

Signed-off-by: Hiroshi Miura <miurahr@linux.com>
change flag to be as same as original Kakasi

Signed-off-by: Hiroshi Miura <miurahr@linux.com>