ert--print-backtrace has been removed in latest Emacs

[qhuyduong]

ert--print-backtrace has been removed with this commit

emacs-mirror/emacs@e09120d

So ert-runner can't work with latest Emacs. Please help to fix.

Thanks

[phst]

It looks like this should now use backtrace-to-string.

[anquegi]

Until, it will we updated we can use a workaround in test-helper.el, for emacs major-version bigger than 26:

(when (> emacs-major-version 26)
(defalias 'ert--print-backtrace 'backtrace-to-string))

bad tests:

learn/emacs/neural-networks-and-chaos took 2s
➜ cask exec ert-runner

Test addition-test backtrace:


Test addition-test condition:

    (ert-test-failed
     ((should
       (=
	(+ 2 1)
	4))
      :form
      (= 3 4)
      :value nil))

F

Ran 1 test in 0.084 seconds
1 unexpected results:
   FAILED  addition-test

Corrected tests:

➜ cask exec ert-runner

.

Ran 1 test in 0.000 seconds

[cireu]

How about now? It's not an important issue but really annoying and confusing.

[seagle0128]

Any update?