Mercurial > hg > mercurial-crew-with-dirclash
view tests/README @ 2577:fa76c5d609c9
bdiff: improve worst case behavior by 100x.
on 5.8MB (244.000 lines) text file with similar lines, hash before
this change made diff against empty file take 75 seconds. this change
improves performance to 0.6 seconds. result is that clone of smallish
repo (137MB) with some files like this takes 1 minute instead of 10
minutes.
common case of diff is 10% slower now, probably because of worse cache
locality. but diff does not affect overall performance in common case
(less than 1% of runtime is in diff when it is working ok), so this
tradeoff looks good.
author | Vadim Gelfer <vadim.gelfer@gmail.com> |
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date | Fri, 07 Jul 2006 15:02:55 -0700 |
parents | e506c14382fd |
children | 1c66aad252f9 |
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A simple testing framework To run the tests, do: cd tests/ python run-tests.py This finds all scripts in the test directory named test-* and executes them. The scripts can be either shell scripts or Python. Each test is run in a temporary directory that is removed when the test is complete. A test-<x> succeeds if the script returns success and its output matches test-<x>.out. If the new output doesn't match, it is stored in test-<x>.err. There are some tricky points here that you should be aware of when writing tests: - hg commit and hg merge want user interaction for commit use -m "text" for hg merge, set HGMERGE to something noninteractive (like true or merge) - changeset hashes will change based on user and date which make things like hg history output change use commit -m "test" -u test -d "1000000 0" - diff will show the current time use hg diff | sed "s/\(\(---\|+++\) [a-zA-Z0-9_/.-]*\).*/\1/" to strip dates