# find where everything lives

curdir=$(pwd)
helper=$(atf_get_srcdir)/h_nullmnt

# common test body
#    $1 = directory of file to monitor
#    $2 = directory of file to update/modify

nullmnt_common()
{    
	mkdir ${curdir}/lower_dir
	mkdir ${curdir}/upper_dir
	mount -t null ${curdir}/lower_dir ${curdir}/upper_dir
	rm -f ${curdir}/lower_dir/afile
	touch ${curdir}/lower_dir/afile

	atf_check -e ignore -o ignore -s exit:0		\
		${helper} ${curdir}/${1}/afile ${curdir}/${2}/afile
}

nullmnt_common_cleanup()
{
	curdir=$(pwd)
	umount ${curdir}/upper_dir
	rm -rf ${curdir}/lower_dir ${curdir}/upper_dir
}

atf_test_case nullmnt_upper_lower cleanup
nullmnt_upper_lower_head()
{
	atf_set "descr" "ensure upper fs events seen on lower fs"
}
nullmnt_upper_lower_body()
{
	nullmnt_common lower_dir upper_dir
} 
nullmnt_upper_lower_cleanup()
{
	nullmnt_common_cleanup
}

atf_test_case nullmnt_upper_upper cleanup
nullmnt_upper_upper_head()
{
	atf_set "descr" "ensure upper fs events seen on upper fs"
}
nullmnt_upper_upper_body()
{
	nullmnt_common upper_dir upper_dir
} 
nullmnt_upper_upper_cleanup()
{
	nullmnt_common_cleanup
}
atf_test_case nullmnt_lower_upper cleanup
nullmnt_lower_upper_head()
{
	atf_set "descr" "ensure lower fs events seen on upper fs"
}
nullmnt_lower_upper_body()
{
	nullmnt_common upper_dir lower_dir
} 
nullmnt_lower_upper_cleanup()
{
	nullmnt_common_cleanup
}

atf_test_case nullmnt_lower_lower cleanup
nullmnt_lower_lower_head()
{
	atf_set "descr" "ensure lower fs events seen on lower fs"
}
nullmnt_lower_lower_body()
{
	nullmnt_common lower_dir lower_dir
} 
nullmnt_lower_lower_cleanup()
{
	nullmnt_common_cleanup
}

atf_init_test_cases()
{
	atf_add_test_case nullmnt_upper_upper
	atf_add_test_case nullmnt_upper_lower
	atf_add_test_case nullmnt_lower_upper
	atf_add_test_case nullmnt_lower_lower
}