Mercurial > hg
view tests/test-sparse-profiles.t @ 42619:20d0e59be79b
tests: show the files fields of changelogs for many merges
I don't think there's coverage for many of the subtle cases, and I
found it hard to understand what the code is doing by reading it. The
test takes 40s to run on a laptop, or 9s with --chg.
I have yet to find a description of what the files field is supposed
to be for merges. I thought it could be one of:
1. the files added/modified/removed relative to p1 (wouldn't seem
useful, but `hg diff -c -r mergerev` has this behavior)
2. the files with filelog nodes not in either parent (i.e., what is
needed to create a bundle out of a commit)
3. the files added/removed/modified files by merge itself [1]
It's clearly not 1, because file contents merges are symmetric. It's
clearly not 2 because removed files and exec bit changes are
listed. It's also not 3 but I think it's intended to be 3 and the
differences are bugs.
Assuming 3, the test shows that, for merges, the list of files both
overapproximates and underapproximates. All the cases involve file
changes not in the filelog but in the manifest (existence of file
at revision, exec bit and file vs symlink).
I didn't look at all underapproximations, but they looked minor. The
two overapproximations are problematic though because they both cause
potentially long lists of files when merging cleanly.
[1] even what it means for the merge commit itself to change a file is
not completely trivial. A file in the merge being the same as in one
of the parent is too lax as it would consider that merges change
nothing when they revert all the changes done on one side. The
criteria used in the test and in the next commit for "merge didn't
touch a file" is:
- the parents and the merge all have the same file
- or, one parent didn't touch the file and the other parent contains
the same file as the merge
Differential Revision: https://phab.mercurial-scm.org/D6612
author | Valentin Gatien-Baron <valentin.gatienbaron@gmail.com> |
---|---|
date | Tue, 02 Jul 2019 12:55:51 -0400 |
parents | 9db856446298 |
children | 5c2a4f37eace |
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test sparse $ hg init myrepo $ cd myrepo $ cat > .hg/hgrc <<EOF > [extensions] > sparse= > purge= > strip= > rebase= > EOF Config file without [section] is rejected $ cat > bad.sparse <<EOF > *.html > EOF $ hg debugsparse --import-rules bad.sparse abort: sparse config entry outside of section: *.html (add an [include] or [exclude] line to declare the entry type) [255] $ rm bad.sparse $ echo a > index.html $ echo x > data.py $ echo z > readme.txt $ cat > webpage.sparse <<EOF > # frontend sparse profile > [include] > *.html > EOF $ cat > backend.sparse <<EOF > # backend sparse profile > [include] > *.py > EOF $ hg ci -Aqm 'initial' $ hg debugsparse --include '*.sparse' Verify enabling a single profile works $ hg debugsparse --enable-profile webpage.sparse $ ls backend.sparse index.html webpage.sparse Verify enabling two profiles works $ hg debugsparse --enable-profile backend.sparse $ ls backend.sparse data.py index.html webpage.sparse Verify disabling a profile works $ hg debugsparse --disable-profile webpage.sparse $ ls backend.sparse data.py webpage.sparse Verify that a profile is updated across multiple commits $ cat > webpage.sparse <<EOF > # frontend sparse profile > [include] > *.html > EOF $ cat > backend.sparse <<EOF > # backend sparse profile > [include] > *.py > *.txt > EOF $ echo foo >> data.py $ hg ci -m 'edit profile' $ ls backend.sparse data.py readme.txt webpage.sparse $ hg up -q 0 $ ls backend.sparse data.py webpage.sparse $ hg up -q 1 $ ls backend.sparse data.py readme.txt webpage.sparse Introduce a conflicting .hgsparse change $ hg up -q 0 $ cat > backend.sparse <<EOF > # Different backend sparse profile > [include] > *.html > EOF $ echo bar >> data.py $ hg ci -qAm "edit profile other" $ ls backend.sparse index.html webpage.sparse Verify conflicting merge pulls in the conflicting changes $ hg merge 1 temporarily included 2 file(s) in the sparse checkout for merging merging backend.sparse merging data.py warning: conflicts while merging backend.sparse! (edit, then use 'hg resolve --mark') warning: conflicts while merging data.py! (edit, then use 'hg resolve --mark') 0 files updated, 0 files merged, 0 files removed, 2 files unresolved use 'hg resolve' to retry unresolved file merges or 'hg merge --abort' to abandon [1] $ rm *.orig $ ls backend.sparse data.py index.html webpage.sparse Verify resolving the merge removes the temporarily unioned files $ cat > backend.sparse <<EOF > # backend sparse profile > [include] > *.html > *.txt > EOF $ hg resolve -m backend.sparse $ cat > data.py <<EOF > x > foo > bar > EOF $ hg resolve -m data.py (no more unresolved files) $ hg ci -qAm "merge profiles" $ ls backend.sparse index.html readme.txt webpage.sparse $ hg cat -r . data.py x foo bar Verify stripping refreshes dirstate $ hg strip -q -r . $ ls backend.sparse index.html webpage.sparse Verify rebase conflicts pulls in the conflicting changes $ hg up -q 1 $ ls backend.sparse data.py readme.txt webpage.sparse $ hg rebase -d 2 rebasing 1:a2b1de640a62 "edit profile" temporarily included 2 file(s) in the sparse checkout for merging merging backend.sparse merging data.py warning: conflicts while merging backend.sparse! (edit, then use 'hg resolve --mark') warning: conflicts while merging data.py! (edit, then use 'hg resolve --mark') unresolved conflicts (see hg resolve, then hg rebase --continue) [1] $ rm *.orig $ ls backend.sparse data.py index.html webpage.sparse Verify resolving conflict removes the temporary files $ cat > backend.sparse <<EOF > [include] > *.html > *.txt > EOF $ hg resolve -m backend.sparse $ cat > data.py <<EOF > x > foo > bar > EOF $ hg resolve -m data.py (no more unresolved files) continue: hg rebase --continue $ hg rebase -q --continue $ ls backend.sparse index.html readme.txt webpage.sparse $ hg cat -r . data.py x foo bar Test checking out a commit that does not contain the sparse profile. The warning message can be suppressed by setting missingwarning = false in [sparse] section of your config: $ hg debugsparse --reset $ hg rm *.sparse $ hg commit -m "delete profiles" $ hg up -q ".^" $ hg debugsparse --enable-profile backend.sparse $ ls index.html readme.txt $ hg up tip | grep warning warning: sparse profile 'backend.sparse' not found in rev bfcb76de99cc - ignoring it [1] $ ls data.py index.html readme.txt $ hg debugsparse --disable-profile backend.sparse | grep warning warning: sparse profile 'backend.sparse' not found in rev bfcb76de99cc - ignoring it [1] $ cat >> .hg/hgrc <<EOF > [sparse] > missingwarning = false > EOF $ hg debugsparse --enable-profile backend.sparse $ cd .. #if unix-permissions Test file permissions changing across a sparse profile change $ hg init sparseperm $ cd sparseperm $ cat > .hg/hgrc <<EOF > [extensions] > sparse= > EOF $ touch a b $ cat > .hgsparse <<EOF > [include] > a > EOF $ hg commit -Aqm 'initial' $ chmod a+x b $ hg commit -qm 'make executable' $ cat >> .hgsparse <<EOF > b > EOF $ hg commit -qm 'update profile' $ hg up -q 0 $ hg debugsparse --enable-profile .hgsparse $ hg up -q 2 $ ls -l b -rwxr-xr-x* b (glob) #endif