view tests/test-rollback @ 9851:9e7b2c49d25d

Make it possible to debug failed hook imports via use of --traceback

Prior to this change, if a Python hook module failed to load (e.g. due
to an import error or path problem), it was impossible to figure out
why the error occurred, because the ImportErrors that got raised were
caught but never displayed.

If run with --traceback or ui.traceback=True, hg now prints tracebacks
of both of the ImportError instances that get raised before it bails.

#!/bin/sh

mkdir t
cd t
hg init
echo a > a
hg add a
hg commit -m "test" -d "1000000 0"
hg verify
hg parents
hg status
hg rollback
hg verify
hg parents
hg status

echo % Test issue 902
hg commit -m "test"
hg branch test
hg rollback
hg branch

echo % Test rollback of hg before issue 902 was fixed
hg commit -m "test"
hg branch test
rm .hg/undo.branch
hg rollback
hg branch