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largefiles: access to specific fields only if largefiles enabled (issue4547)...
largefiles: access to specific fields only if largefiles enabled (issue4547) Even if largefiles extension is enabled in a repository, "repo" object, which isn't "largefiles.reposetup()"-ed, is passed to overridden functions in the cases below unexpectedly, because extensions are enabled for each repositories strictly. (1) clone without -U: (2) pull with -U: (3) pull with --rebase: combination of "enabled@src", "disabled@dst" and "not-required@src" cause this situation. largefiles requirement @src @dst @src result -------- -------- --------------- -------------------- enabled disabled not-required aborted unexpectedly required requirement error (intentional) -------- -------- --------------- -------------------- enabled enabled * success -------- -------- --------------- -------------------- disabled enabled * success (only for "pull") -------- -------- --------------- -------------------- disabled disabled not-required success required requirement error (intentional) -------- -------- --------------- -------------------- (4) update/revert with a subrepo disabling largefiles In these cases, overridden functions cause accessing to largefiles specific fields of not "largefiles.reposetup()"-ed "repo" object, and execution is aborted. - (1), (2), (4) cause accessing to "_lfstatuswriters" in "getstatuswriter()" invoked via "updatelfiles()" - (3) causes accessing to "_lfcommithooks" in "overriderebase()" For safe accessing to these fields, this patch examines whether passed "repo" object is "largefiles.reposetup()"-ed or not before accessing to them. This patch chooses examining existence of newly introduced "_largefilesenabled" instead of "_lfcommithooks" and "_lfstatuswriters" directly, because the former is better name for the generic "largefiles is enabled in this repo" mark than the latter. In the future, all other overridden functions should avoid largefiles specific processing for efficiency, and "_largefilesenabled" is better also for such purpose. BTW, "lfstatus" can't be used for such purpose, because some code paths set it forcibly regardless of existence of it in specified "repo" object.
Matt Mackall - - Load All Authors

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test-casecollision-merge.t
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#require icasefs
################################
test for branch merging
################################
test for rename awareness of case-folding collision check:
(1) colliding file is one renamed from collided file:
this is also case for issue3370.
$ hg init branch_merge_renaming
$ cd branch_merge_renaming
$ echo a > a
$ hg add a
$ echo b > b
$ hg add b
$ hg commit -m '#0'
$ hg tag -l A
$ hg rename a tmp
$ hg rename tmp A
$ hg commit -m '#1'
$ hg tag -l B
$ hg update -q 0
$ touch x
$ hg add x
$ hg commit -m '#2'
created new head
$ hg tag -l C
$ hg merge -q
$ hg status -A
M A
R a
C b
C x
$ hg update -q --clean 1
$ hg merge -q
$ hg status -A
M x
C A
C b
$ hg commit -m '(D)'
$ hg tag -l D
additional test for issue3452:
| this assumes the history below.
|
| (A) -- (C) -- (E) -------
| \ \ \
| \ \ \
| (B) -- (D) -- (F) -- (G)
|
| A: add file 'a'
| B: rename from 'a' to 'A'
| C: add 'x' (or operation other than modification of 'a')
| D: merge C into B
| E: modify 'a'
| F: modify 'A'
| G: merge E into F
|
| issue3452 occurs when (B) is recorded before (C)
$ hg update -q --clean C
$ echo "modify 'a' at (E)" > a
$ echo "modify 'b' at (E)" > b
$ hg commit -m '(E)'
created new head
$ hg tag -l E
$ hg update -q --clean D
$ echo "modify 'A' at (F)" > A
$ hg commit -m '(F)'
$ hg tag -l F
$ hg merge -q --tool internal:other E
$ hg status -A
M A
a
M b
C x
$ cat A
modify 'a' at (E)
test also the case that (B) is recorded after (C), to prevent
regression by changes in the future.
to avoid unexpected (successful) behavior by filelog unification,
target file is not 'a'/'A' but 'b'/'B' in this case.
$ hg update -q --clean A
$ hg rename b tmp
$ hg rename tmp B
$ hg commit -m '(B1)'
created new head
$ hg tag -l B1
$ hg merge -q C
$ hg status -A
M x
C B
C a
$ hg commit -m '(D1)'
$ hg tag -l D1
$ echo "modify 'B' at (F1)" > B
$ hg commit -m '(F1)'
$ hg tag -l F1
$ hg merge -q --tool internal:other E
$ hg status -A
M B
b
M a
C x
$ cat B
modify 'b' at (E)
$ cd ..
(2) colliding file is not related to collided file
$ hg init branch_merge_collding
$ cd branch_merge_collding
$ echo a > a
$ hg add a
$ hg commit -m '#0'
$ hg remove a
$ hg commit -m '#1'
$ echo A > A
$ hg add A
$ hg commit -m '#2'
$ hg update --clean 0
1 files updated, 0 files merged, 1 files removed, 0 files unresolved
$ echo x > x
$ hg add x
$ hg commit -m '#3'
created new head
$ echo 'modified at #4' > a
$ hg commit -m '#4'
$ hg merge
abort: case-folding collision between a and A
[255]
$ hg parents --template '{rev}\n'
4
$ hg status -A
C a
C x
$ cat a
modified at #4
$ hg update --clean 2
1 files updated, 0 files merged, 2 files removed, 0 files unresolved
$ hg merge
abort: case-folding collision between a and A
[255]
$ hg parents --template '{rev}\n'
2
$ hg status -A
C A
$ cat A
A
test for deletion awareness of case-folding collision check (issue3648):
revision '#3' doesn't change 'a', so 'a' should be recognized as
safely removed in merging between #2 and #3.
$ hg update --clean 3
2 files updated, 0 files merged, 1 files removed, 0 files unresolved
$ hg merge 2
1 files updated, 0 files merged, 1 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ hg status -A
M A
R a
C x
$ hg update --clean 2
1 files updated, 0 files merged, 1 files removed, 0 files unresolved
$ hg merge 3
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ hg status -A
M x
C A
$ cd ..
################################
test for linear updates
################################
test for rename awareness of case-folding collision check:
(1) colliding file is one renamed from collided file
$ hg init linearupdate_renameaware_1
$ cd linearupdate_renameaware_1
$ echo a > a
$ hg add a
$ hg commit -m '#0'
$ hg rename a tmp
$ hg rename tmp A
$ hg commit -m '#1'
$ hg update 0
1 files updated, 0 files merged, 1 files removed, 0 files unresolved
$ echo 'this is added line' >> a
$ hg update 1
merging a and A to A
0 files updated, 1 files merged, 0 files removed, 0 files unresolved
$ hg status -A
M A
$ cat A
a
this is added line
$ cd ..
(2) colliding file is not related to collided file
$ hg init linearupdate_renameaware_2
$ cd linearupdate_renameaware_2
$ echo a > a
$ hg add a
$ hg commit -m '#0'
$ hg remove a
$ hg commit -m '#1'
$ echo A > A
$ hg add A
$ hg commit -m '#2'
$ hg update 0
1 files updated, 0 files merged, 1 files removed, 0 files unresolved
$ hg parents --template '{rev}\n'
0
$ hg status -A
C a
$ cat A
a
$ hg up -qC 2
$ hg update --check 0
1 files updated, 0 files merged, 1 files removed, 0 files unresolved
$ hg parents --template '{rev}\n'
0
$ hg status -A
C a
$ cat a
a
$ hg update --clean 2
1 files updated, 0 files merged, 1 files removed, 0 files unresolved
$ hg parents --template '{rev}\n'
2
$ hg status -A
C A
$ cat A
A
$ cd ..
(3) colliding file is not related to collided file: added in working dir
$ hg init linearupdate_renameaware_3
$ cd linearupdate_renameaware_3
$ echo a > a
$ hg add a
$ hg commit -m '#0'
$ hg rename a b
$ hg commit -m '#1'
$ hg update 0
1 files updated, 0 files merged, 1 files removed, 0 files unresolved
$ echo B > B
$ hg add B
$ hg status
A B
$ hg update
abort: case-folding collision between b and B
[255]
$ hg update --check
abort: uncommitted changes
[255]
$ hg update --clean
1 files updated, 0 files merged, 1 files removed, 0 files unresolved
$ hg parents --template '{rev}\n'
1
$ hg status -A
C b
$ cat b
a
$ cd ..