* automated/ert-tests.el (ert-test-skip-unless): New test case.

* automated/ert-tests.el (ert-test-skip-unless): New test case.
(ert-test-deftest): Adapt test for changed macro expansion.
(ert-test-run-tests-interactively):
* automated/ert-x-tests.el (ert-test-run-tests-interactively-2):
Add a skipping test.

* automated/file-notify-tests.el (top): Do not require tramp-sh.el.
(file-notify--test-local-enabled): Make it a function.  Check also
for `file-remote-p' of `temporary-file-directory'.
(file-notify--test-remote-enabled-checked): New defvar.
(file-notify--test-remote-enabled): Rewrite.  Do not use Tramp
internal functions.  Cache result.
(file-notify--deftest-remote, file-notify-test00-availability)
(file-notify-test01-add-watch, file-notify-test02-events)
(file-notify-test03-autorevert): Add checks with `skip_unless'.
(file-notify-test-all): Do not check `file-notify--test-local-enabled'.