Mercurial > hg
view tests/test-merge-types.t @ 29859:a1092e2d70a3
help: internals topic for wire protocol
The Mercurial wire protocol is under-documented. This includes a lack
of source docstrings and comments as well as pages on the official
wiki.
This patch adds the beginnings of "internals" documentation on the
wire protocol.
The documentation should have nearly complete coverage on the
lower-level parts of the protocol, such as the different transport
mechanims, how commands and arguments are sent, capabilities, and,
of course, the commands themselves.
As part of writing this documentation, I discovered a number of
deficiencies in the protocol and bugs in the implementation. I've
started sending patches for some of the issues. I hope to send a lot
more.
This patch starts with the scaffolding for a new internals page.
author | Gregory Szorc <gregory.szorc@gmail.com> |
---|---|
date | Mon, 22 Aug 2016 19:46:39 -0700 |
parents | a7f8939641aa |
children | 940c05b25b07 |
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#require symlink execbit $ tellmeabout() { > if [ -h $1 ]; then > echo $1 is a symlink: > $TESTDIR/readlink.py $1 > elif [ -x $1 ]; then > echo $1 is an executable file with content: > cat $1 > else > echo $1 is a plain file with content: > cat $1 > fi > } $ hg init test1 $ cd test1 $ echo a > a $ hg ci -Aqmadd $ chmod +x a $ hg ci -mexecutable $ hg up -q 0 $ rm a $ ln -s symlink a $ hg ci -msymlink created new head Symlink is local parent, executable is other: $ hg merge --debug searching for copies back to rev 1 resolving manifests branchmerge: True, force: False, partial: False ancestor: c334dc3be0da, local: 521a1e40188f+, remote: 3574f3e69b1c preserving a for resolve of a a: versions differ -> m (premerge) picked tool ':merge' for a (binary False symlink True changedelete False) merging a my a@521a1e40188f+ other a@3574f3e69b1c ancestor a@c334dc3be0da warning: internal :merge cannot merge symlinks for a warning: conflicts while merging a! (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 or 'hg update -C .' to abandon [1] $ tellmeabout a a is a symlink: a -> symlink $ hg resolve a --tool internal:other (no more unresolved files) $ tellmeabout a a is an executable file with content: a $ hg st M a ? a.orig Symlink is other parent, executable is local: $ hg update -C 1 1 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg merge --debug --tool :union searching for copies back to rev 1 resolving manifests branchmerge: True, force: False, partial: False ancestor: c334dc3be0da, local: 3574f3e69b1c+, remote: 521a1e40188f preserving a for resolve of a a: versions differ -> m (premerge) picked tool ':union' for a (binary False symlink True changedelete False) merging a my a@3574f3e69b1c+ other a@521a1e40188f ancestor a@c334dc3be0da warning: internal :union cannot merge symlinks for a warning: conflicts while merging a! (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 or 'hg update -C .' to abandon [1] $ tellmeabout a a is an executable file with content: a $ hg update -C 1 1 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg merge --debug --tool :merge3 searching for copies back to rev 1 resolving manifests branchmerge: True, force: False, partial: False ancestor: c334dc3be0da, local: 3574f3e69b1c+, remote: 521a1e40188f preserving a for resolve of a a: versions differ -> m (premerge) picked tool ':merge3' for a (binary False symlink True changedelete False) merging a my a@3574f3e69b1c+ other a@521a1e40188f ancestor a@c334dc3be0da warning: internal :merge3 cannot merge symlinks for a warning: conflicts while merging a! (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 or 'hg update -C .' to abandon [1] $ tellmeabout a a is an executable file with content: a $ hg update -C 1 1 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg merge --debug --tool :merge-local searching for copies back to rev 1 resolving manifests branchmerge: True, force: False, partial: False ancestor: c334dc3be0da, local: 3574f3e69b1c+, remote: 521a1e40188f preserving a for resolve of a a: versions differ -> m (premerge) picked tool ':merge-local' for a (binary False symlink True changedelete False) merging a my a@3574f3e69b1c+ other a@521a1e40188f ancestor a@c334dc3be0da warning: internal :merge-local cannot merge symlinks for a 0 files updated, 0 files merged, 0 files removed, 1 files unresolved use 'hg resolve' to retry unresolved file merges or 'hg update -C .' to abandon [1] $ tellmeabout a a is an executable file with content: a $ hg update -C 1 1 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg merge --debug --tool :merge-other searching for copies back to rev 1 resolving manifests branchmerge: True, force: False, partial: False ancestor: c334dc3be0da, local: 3574f3e69b1c+, remote: 521a1e40188f preserving a for resolve of a a: versions differ -> m (premerge) picked tool ':merge-other' for a (binary False symlink True changedelete False) merging a my a@3574f3e69b1c+ other a@521a1e40188f ancestor a@c334dc3be0da warning: internal :merge-other cannot merge symlinks for a 0 files updated, 0 files merged, 0 files removed, 1 files unresolved use 'hg resolve' to retry unresolved file merges or 'hg update -C .' to abandon [1] $ tellmeabout a a is an executable file with content: a Update to link without local change should get us a symlink (issue3316): $ hg up -C 0 1 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg up 1 files updated, 0 files merged, 0 files removed, 0 files unresolved 1 other heads for branch "default" $ hg st ? a.orig Update to link with local change should cause a merge prompt (issue3200): $ hg up -Cq 0 $ echo data > a $ HGMERGE= hg up -y --debug searching for copies back to rev 2 resolving manifests branchmerge: False, force: False, partial: False ancestor: c334dc3be0da, local: c334dc3be0da+, remote: 521a1e40188f preserving a for resolve of a a: versions differ -> m (premerge) (couldn't find merge tool hgmerge|tool hgmerge can't handle symlinks) (re) picked tool ':prompt' for a (binary False symlink True changedelete False) no tool found to merge a keep (l)ocal [working copy], take (o)ther [destination], or leave (u)nresolved? u 0 files updated, 0 files merged, 0 files removed, 1 files unresolved use 'hg resolve' to retry unresolved file merges 1 other heads for branch "default" [1] $ hg diff --git diff --git a/a b/a old mode 120000 new mode 100644 --- a/a +++ b/a @@ -1,1 +1,1 @@ -symlink \ No newline at end of file +data Test only 'l' change - happens rarely, except when recovering from situations where that was what happened. $ hg init test2 $ cd test2 $ printf base > f $ hg ci -Aqm0 $ echo file > f $ echo content >> f $ hg ci -qm1 $ hg up -qr0 $ rm f $ ln -s base f $ hg ci -qm2 $ hg merge merging f warning: internal :merge cannot merge symlinks for f warning: conflicts while merging f! (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 or 'hg update -C .' to abandon [1] $ tellmeabout f f is a symlink: f -> base $ hg up -Cqr1 $ hg merge merging f warning: internal :merge cannot merge symlinks for f warning: conflicts while merging f! (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 or 'hg update -C .' to abandon [1] $ tellmeabout f f is a plain file with content: file content $ cd .. Test removed 'x' flag merged with change to symlink $ hg init test3 $ cd test3 $ echo f > f $ chmod +x f $ hg ci -Aqm0 $ chmod -x f $ hg ci -qm1 $ hg up -qr0 $ rm f $ ln -s dangling f $ hg ci -qm2 $ hg merge merging f warning: internal :merge cannot merge symlinks for f warning: conflicts while merging f! (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 or 'hg update -C .' to abandon [1] $ tellmeabout f f is a symlink: f -> dangling $ hg up -Cqr1 $ hg merge merging f warning: internal :merge cannot merge symlinks for f warning: conflicts while merging f! (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 or 'hg update -C .' to abandon [1] $ tellmeabout f f is a plain file with content: f Test removed 'x' flag merged with content change - both ways $ hg up -Cqr0 $ echo change > f $ hg ci -qm3 $ hg merge -r1 1 files updated, 0 files merged, 0 files removed, 0 files unresolved (branch merge, don't forget to commit) $ tellmeabout f f is a plain file with content: change $ hg up -qCr1 $ hg merge -r3 1 files updated, 0 files merged, 0 files removed, 0 files unresolved (branch merge, don't forget to commit) $ tellmeabout f f is a plain file with content: change $ cd .. Test merge with no common ancestor: a: just different b: x vs -, different (cannot calculate x, cannot ask merge tool) c: x vs -, same (cannot calculate x, merge tool is no good) d: x vs l, different e: x vs l, same f: - vs l, different g: - vs l, same h: l vs l, different (where same means the filelog entry is shared and there thus is an ancestor!) $ hg init test4 $ cd test4 $ echo 0 > 0 $ hg ci -Aqm0 $ echo 1 > a $ echo 1 > b $ chmod +x b $ echo x > c $ chmod +x c $ echo 1 > d $ chmod +x d $ printf x > e $ chmod +x e $ echo 1 > f $ printf x > g $ ln -s 1 h $ hg ci -qAm1 $ hg up -qr0 $ echo 2 > a $ echo 2 > b $ echo x > c $ ln -s 2 d $ ln -s x e $ ln -s 2 f $ ln -s x g $ ln -s 2 h $ hg ci -Aqm2 $ hg merge merging a warning: cannot merge flags for b merging b warning: cannot merge flags for c merging d warning: internal :merge cannot merge symlinks for d warning: conflicts while merging d! (edit, then use 'hg resolve --mark') merging f warning: internal :merge cannot merge symlinks for f warning: conflicts while merging f! (edit, then use 'hg resolve --mark') merging h warning: internal :merge cannot merge symlinks for h warning: conflicts while merging h! (edit, then use 'hg resolve --mark') warning: conflicts while merging a! (edit, then use 'hg resolve --mark') warning: conflicts while merging b! (edit, then use 'hg resolve --mark') 3 files updated, 0 files merged, 0 files removed, 5 files unresolved use 'hg resolve' to retry unresolved file merges or 'hg update -C .' to abandon [1] $ hg resolve -l U a U b U d U f U h $ tellmeabout a a is a plain file with content: <<<<<<< local: 0139c5610547 - test: 2 2 ======= 1 >>>>>>> other: 97e29675e796 - test: 1 $ tellmeabout b b is a plain file with content: <<<<<<< local: 0139c5610547 - test: 2 2 ======= 1 >>>>>>> other: 97e29675e796 - test: 1 $ tellmeabout c c is a plain file with content: x $ tellmeabout d d is a symlink: d -> 2 $ tellmeabout e e is a symlink: e -> x $ tellmeabout f f is a symlink: f -> 2 $ tellmeabout g g is a symlink: g -> x $ tellmeabout h h is a symlink: h -> 2 $ hg up -Cqr1 $ hg merge merging a warning: cannot merge flags for b merging b warning: cannot merge flags for c merging d warning: internal :merge cannot merge symlinks for d warning: conflicts while merging d! (edit, then use 'hg resolve --mark') merging f warning: internal :merge cannot merge symlinks for f warning: conflicts while merging f! (edit, then use 'hg resolve --mark') merging h warning: internal :merge cannot merge symlinks for h warning: conflicts while merging h! (edit, then use 'hg resolve --mark') warning: conflicts while merging a! (edit, then use 'hg resolve --mark') warning: conflicts while merging b! (edit, then use 'hg resolve --mark') 3 files updated, 0 files merged, 0 files removed, 5 files unresolved use 'hg resolve' to retry unresolved file merges or 'hg update -C .' to abandon [1] $ tellmeabout a a is a plain file with content: <<<<<<< local: 97e29675e796 - test: 1 1 ======= 2 >>>>>>> other: 0139c5610547 - test: 2 $ tellmeabout b b is an executable file with content: <<<<<<< local: 97e29675e796 - test: 1 1 ======= 2 >>>>>>> other: 0139c5610547 - test: 2 $ tellmeabout c c is an executable file with content: x $ tellmeabout d d is an executable file with content: 1 $ tellmeabout e e is an executable file with content: x (no-eol) $ tellmeabout f f is a plain file with content: 1 $ tellmeabout g g is a plain file with content: x (no-eol) $ tellmeabout h h is a symlink: h -> 1 $ cd ..