Mercurial > hg
annotate tests/test-push-checkheads-pruned-B7.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> |
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date | Tue, 02 Jul 2019 12:55:51 -0400 |
parents | 4441705b7111 |
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rev | line source |
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1 ==================================== |
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2 Testing head checking code: Case B-7 |
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3 ==================================== |
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4 |
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5 Mercurial checks for the introduction of new heads on push. Evolution comes |
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6 into play to detect if existing branches on the server are being replaced by |
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7 some of the new one we push. |
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8 |
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9 This case is part of a series of tests checking this behavior. |
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10 |
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11 Category B: simple case involving pruned changesets |
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12 TestCase 7: single changesets, pruned then superseeded (on an existing changeset) |
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13 |
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14 .. old-state: |
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15 .. |
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16 .. * 1 changeset branch |
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17 .. |
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18 .. new-state: |
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19 .. |
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20 .. * old branch is rewritten onto the common set, |
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21 .. * the new version is then pruned. |
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22 .. |
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23 .. expected-result: |
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24 .. |
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25 .. * push allowed |
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26 .. |
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27 .. graph-summary: |
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28 .. |
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29 .. A ø⇠⊗ A' |
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30 .. B ◔ | | |
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31 .. \|/ |
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32 .. ● |
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33 |
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34 $ . $TESTDIR/testlib/push-checkheads-util.sh |
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35 |
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36 Test setup |
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37 ---------- |
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38 |
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39 $ mkdir B7 |
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40 $ cd B7 |
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41 $ setuprepos |
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42 creating basic server and client repo |
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43 updating to branch default |
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44 2 files updated, 0 files merged, 0 files removed, 0 files unresolved |
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45 $ cd client |
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46 $ hg up 0 |
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47 0 files updated, 0 files merged, 1 files removed, 0 files unresolved |
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48 $ mkcommit B0 |
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49 created new head |
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50 $ mkcommit A1 |
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51 $ hg up 'desc(B0)' |
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52 0 files updated, 0 files merged, 1 files removed, 0 files unresolved |
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53 $ hg debugobsolete `getid "desc(A0)"` `getid "desc(A1)"` |
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54 obsoleted 1 changesets |
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55 $ hg debugobsolete --record-parents `getid "desc(A1)"` |
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56 obsoleted 1 changesets |
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57 $ hg log -G --hidden |
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58 x ba93660aff8d (draft): A1 |
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59 | |
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60 @ 74ff5441d343 (draft): B0 |
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61 | |
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62 | x 8aaa48160adc (draft): A0 |
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63 |/ |
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64 o 1e4be0697311 (public): root |
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65 |
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66 |
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67 Actual testing |
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68 -------------- |
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69 |
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70 $ hg push |
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71 pushing to $TESTTMP/B7/server |
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72 searching for changes |
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73 adding changesets |
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74 adding manifests |
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75 adding file changes |
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76 added 1 changesets with 1 changes to 1 files (+1 heads) |
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77 2 new obsolescence markers |
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78 obsoleted 1 changesets |
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79 |
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80 $ cd ../.. |