Hello Nicolas,
While recently working on few Org tag fixes in org.el, I was running make test, and saw 1 test related to the recently added org-num-mode fail.
The failure can be quickly recreated with:
make test BTEST_RE=test-org-num
=====
Test test-org-num/format-function condition:
(ert-test-failed
((should
(equal '...
(org-test-with-temp-text "* H1
** H2" ... ...)))
:form
(equal
("foo" "foo")
(#("1.1 " 0 4 ...)
#("1 " 0 2 ...)))
:value nil :explanation
(list-elt 0
(arrays-of-different-length 3 4 "foo"
#("1.1 " 0 4 ...)
first-mismatch-at 0))))
FAILED 1/4 test-org-num/format-function (0.002472 sec)
passed 2/4 test-org-num/max-level (0.000511 sec)
passed 3/4 test-org-num/skip-numbering (0.003965 sec)
passed 4/4 test-org-num/update (0.038399 sec)
Ran 4 tests, 3 results as expected, 1 unexpected (2019-01-07 08:32:35-0500, 0.184330 sec)
1 unexpected results:
FAILED test-org-num/format-function
=====