Mercurial > hg
comparison tests/test-convert-git.t @ 25997:d4e1e947444b stable
convert: fix git copy file content conversions
There was a bug in the git convert code where if you copied a file and modified
the copy source in the same commit, and if the copy dest was alphabetically
earlier than the copy source, the converted version would use the copy dest
contents for both the source and the target.
The root of the bug is that the git diff-tree output is formatted like so:
:<mode> <mode> <oldhash> <newhash> <state> <src> <dest>
:100644 100644 c1ab79a15... 3dfc779ab... C069 oldname newname
:100644 100644 c1ab79a15... 03e2188a6... M oldname
The old code would always take the 'oldname' field as the name of the file being
processed, then it would try to do an extra convert for the newname. This works
for renames because it does a delete for the oldname and a create for the
newname.
For copies though, it ends up associating the copied content (3dfc779ab above)
with the oldname. It only happened when the dest was alphabetically before
because that meant the copy got processed before the modification.
The fix is the treat copy lines as affecting only the newname, and not marking
the oldname as processed.
author | Durham Goode <durham@fb.com> |
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date | Thu, 06 Aug 2015 17:21:46 -0700 |
parents | d9133e89d39d |
children | a7527c5769bb 97208371715a |
comparison
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25996:b12e00a05d57 | 25997:d4e1e947444b |
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319 $ git mv foo foo-renamed | 319 $ git mv foo foo-renamed |
320 since bar is not touched in this commit, this copy will not be detected | 320 since bar is not touched in this commit, this copy will not be detected |
321 $ cp bar bar-copied | 321 $ cp bar bar-copied |
322 $ cp baz baz-copied | 322 $ cp baz baz-copied |
323 $ cp baz baz-copied2 | 323 $ cp baz baz-copied2 |
324 $ cp baz ba-copy | |
324 $ echo baz2 >> baz | 325 $ echo baz2 >> baz |
325 $ git add bar-copied baz-copied baz-copied2 | 326 $ git add bar-copied baz-copied baz-copied2 ba-copy |
326 $ commit -a -m 'rename and copy' | 327 $ commit -a -m 'rename and copy' |
327 $ cd .. | 328 $ cd .. |
328 | 329 |
329 input validation | 330 input validation |
330 $ hg convert --config convert.git.similarity=foo --datesort git-repo2 fullrepo | 331 $ hg convert --config convert.git.similarity=foo --datesort git-repo2 fullrepo |
338 [255] | 339 [255] |
339 | 340 |
340 $ hg -q convert --config convert.git.similarity=100 --datesort git-repo2 fullrepo | 341 $ hg -q convert --config convert.git.similarity=100 --datesort git-repo2 fullrepo |
341 $ hg -R fullrepo status -C --change master | 342 $ hg -R fullrepo status -C --change master |
342 M baz | 343 M baz |
344 A ba-copy | |
345 baz | |
343 A bar-copied | 346 A bar-copied |
344 A baz-copied | 347 A baz-copied |
345 baz | 348 baz |
346 A baz-copied2 | 349 A baz-copied2 |
347 baz | 350 baz |
348 A foo-renamed | 351 A foo-renamed |
349 foo | 352 foo |
350 R foo | 353 R foo |
354 | |
355 Ensure that the modification to the copy source was preserved | |
356 (there was a bug where if the copy dest was alphabetically prior to the copy | |
357 source, the copy source took the contents of the copy dest) | |
358 $ hg cat -r tip fullrepo/baz | |
359 baz | |
360 baz2 | |
351 | 361 |
352 $ cd git-repo2 | 362 $ cd git-repo2 |
353 $ echo bar2 >> bar | 363 $ echo bar2 >> bar |
354 $ commit -a -m 'change bar' | 364 $ commit -a -m 'change bar' |
355 $ cp bar bar-copied2 | 365 $ cp bar bar-copied2 |