Mercurial > hg
view tests/test-update-names.t @ 48671:f1ed5c304f45
encoding: fix trim() to be O(n) instead of O(n^2)
`encoding.trim()` iterated over the possible lengths smaller than the
input and created a slice for each. It then calculated the column
width of the result, which is of course O(n), so the overall algorithm
was O(n). This patch rewrites it to iterate over the unicode
characters, keeping track of the length so far. Also, the old
algorithm started from the end of the string, which made it much worse
when the input is large and the limit is small (such as the typical 72
we pass to it).
You can time it by running something like this:
```
time python3 -c 'from mercurial.utils import stringutil; print(stringutil.ellipsis(b"0123456789" * 1000, 5))'
```
That drops from 4.05 s to 83 ms with this patch (and most of that is
of course startup time).
Differential Revision: https://phab.mercurial-scm.org/D12089
author | Martin von Zweigbergk <martinvonz@google.com> |
---|---|
date | Wed, 26 Jan 2022 10:11:01 -0800 |
parents | c8514f858788 |
children |
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Test update logic when there are renames or weird same-name cases between dirs and files Update with local changes across a file rename $ hg init r1 && cd r1 $ echo a > a $ hg add a $ hg ci -m a $ hg mv a b $ hg ci -m rename $ echo b > b $ hg ci -m change $ hg up -q 0 $ echo c > a $ hg up merging a and b to b warning: conflicts while merging b! (edit, then use 'hg resolve --mark') 0 files updated, 0 files merged, 0 files removed, 1 files unresolved use 'hg resolve' to retry unresolved file merges [1] Test update when local untracked directory exists with the same name as a tracked file in a commit we are updating to $ hg init r2 && cd r2 $ echo root > root && hg ci -Am root # rev 0 adding root $ echo text > name && hg ci -Am "name is a file" # rev 1 adding name $ hg up 0 0 files updated, 0 files merged, 1 files removed, 0 files unresolved $ mkdir name $ hg up 1 1 files updated, 0 files merged, 0 files removed, 0 files unresolved Test update when local untracked directory exists with some files in it and has the same name a tracked file in a commit we are updating to. In future this should be updated to give an friendlier error message, but now we should just make sure that this does not erase untracked data $ hg up 0 0 files updated, 0 files merged, 1 files removed, 0 files unresolved $ mkdir name $ echo text > name/file $ hg st ? name/file $ hg up 1 abort: Unlinking directory not permitted: *$TESTTMP/r1/r2/name* (glob) (windows !) abort: Directory not empty: '?\$TESTTMP/r1/r2/name'? (re) (no-windows !) [255] $ cat name/file text $ cd .. #if symlink Test update when two commits have symlinks that point to different folders $ hg init r3 && cd r3 $ echo root > root && hg ci -Am root adding root $ mkdir folder1 && mkdir folder2 $ ln -s folder1 folder $ hg ci -Am "symlink to folder1" adding folder $ rm folder $ ln -s folder2 folder $ hg ci -Am "symlink to folder2" $ hg up 1 1 files updated, 0 files merged, 0 files removed, 0 files unresolved $ cd .. #endif #if rmcwd Test that warning is printed if cwd is deleted during update $ hg init r4 && cd r4 $ mkdir dir $ cd dir $ echo a > a $ echo b > b $ hg add a b $ hg ci -m "file and dir" $ hg up -q null current directory was removed (consider changing to repo root: $TESTTMP/r1/r4) #endif