view tests/test-gendoc-el.t @ 32980:8dc62c97a665

run-tests: do not prompt changes (-i) if a race condition is detected

The race condition is like:

  1. run-tests.py reads test-a.t as reference output, content A
  2. run-tests.py runs the test (which could be content B, another race
     condition fixed by the next patch, but assume it's content A here)
  3. something changes test-a.t to content C
  4. run-tests.py compares test output (content D) with content A
  5. with "-i", run-tests.py prompts diff(A, D), while the file has content
     C instead of A at this time

This patch detects the above case and tell the user to rerun the test if
they want to apply test changes.

#require docutils gettext

  $ $TESTDIR/check-gendoc el
  checking for parse errors