test_expect_success 't7900-subtree' '
(
chks="sub1
sub2
sub3
sub4" &&
chks_sub=$(cat <<TXT | sed "s,^,sub dir/,"
$chks
TXT
) &&
chkms="main-sub1
main-sub2
main-sub3
main-sub4" &&
chkms_sub=$(cat <<TXT | sed "s,^,sub dir/,"
$chkms
TXT
) &&
subfiles=$(git ls-files) &&
check_equal "$subfiles" "$chkms
$chks"
)
'