tests/test-changelog-exec

run-tests: detect when hghave fails to check for a feature and fail test

hghave exitcode != 0 might mean that hghave failed to check for feature
avaibility. Detect those cases, and fail the test, instead of skipping it.

#!/bin/sh
# b51a8138292a introduced a regression where we would mention in the
# changelog executable files added by the second parent of a merge.
# Test that that doesn't happen anymore

"$TESTDIR/hghave" execbit || exit 80

hg init repo
cd repo
echo foo > foo
hg ci -qAm 'add foo' -d '0 0'

echo bar > bar
chmod +x bar
hg ci -qAm 'add bar' -d '0 0'
echo '% manifest of p2:'
hg manifest
echo

hg up -qC 0
echo >> foo
hg ci -m 'change foo' -d '0 0'
echo '% manifest of p1:'
hg manifest

hg merge
hg ci -m 'merge' -d '0 0'

echo '% this should not mention bar:'
hg tip -v

hg debugindex .hg/store/data/bar.i