Mercurial > hg
view tests/test-push-checkheads-superceed-A4.t @ 48038:52018f8ef020 stable
persistent-nodemap: introduce a test to highlight possible race
Weakness in the current file caching of the changelog means that a writer can
end up using an outdated docket. This might result in "committed"
persistent-nodemap data from a previous writer to be overwritten by a later
writer. This break the strong "append only" assumption of the persistent nodemap
and can result in confused reader.
The race windows are quite narrow. See the test documentation for details.
The issues is fixed in the next changeset.
Differential Revision: https://phab.mercurial-scm.org/D11481
author | Pierre-Yves David <pierre-yves.david@octobus.net> |
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date | Tue, 21 Sep 2021 21:18:50 +0200 |
parents | 34a46d48d24e |
children | 5996640fc6fe |
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==================================== Testing head checking code: Case A-4 ==================================== Mercurial checks for the introduction of new heads on push. Evolution comes into play to detect if existing branches on the server are being replaced by some of the new one we push. This case is part of a series of tests checking this behavior. Category A: simple case involving a branch being superceeded by another. TestCase 4: New changeset as children of the successor .. old-state: .. .. * 1-changeset branch .. .. new-state: .. .. * 2-changeset branch, first is a successor, but head is new .. .. expected-result: .. .. * push allowed .. .. graph-summary: .. .. ◔ B .. | .. A ø⇠◔ A' .. |/ .. ● $ . $TESTDIR/testlib/push-checkheads-util.sh Test setup ---------- $ mkdir A4 $ cd A4 $ setuprepos creating basic server and client repo updating to branch default 2 files updated, 0 files merged, 0 files removed, 0 files unresolved $ cd client $ hg up 0 0 files updated, 0 files merged, 1 files removed, 0 files unresolved $ mkcommit A1 created new head $ hg debugobsolete `getid "desc(A0)" ` `getid "desc(A1)"` 1 new obsolescence markers obsoleted 1 changesets $ mkcommit B0 $ hg log -G --hidden @ f40ded968333 (draft): B0 | o f6082bc4ffef (draft): A1 | | x 8aaa48160adc (draft): A0 |/ o 1e4be0697311 (public): root Actual testing -------------- $ hg push pushing to $TESTTMP/A4/server searching for changes adding changesets adding manifests adding file changes added 2 changesets with 2 changes to 2 files (+1 heads) 1 new obsolescence markers obsoleted 1 changesets $ cd ../../