tests/test-issue619.t
author Pierre-Yves David <pierre-yves.david@octobus.net>
Thu, 07 Mar 2024 10:55:22 +0100
changeset 51531 f85f23f1479b
parent 49621 55c6ebd11cb9
permissions -rw-r--r--
branchcache: skip entries that are topological heads in the on disk file In the majority of cases, topological heads are also branch heads. We have efficient way to get the topological heads and efficient way to retrieve their branch information. So there is little value in putting them in the branch cache file explicitly. On the contrary, writing them explicitly tend to create very large cache file that are inefficient to read and update. So the branch cache v3 format is no longer including them. This changeset focus on the format aspect and have no focus on the performance aspect. We will cover that later.
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https://bz.mercurial-scm.org/619
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  $ hg init repo
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  $ cd repo
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  $ echo a > a
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  $ hg ci -Ama
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  adding a
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  $ echo b > b
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  $ hg branch b
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  marked working directory as branch b
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  (branches are permanent and global, did you want a bookmark?)
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  $ hg ci -Amb
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  adding b
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  $ hg co -C 0
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  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
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Fast-forward:
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  $ hg merge b
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  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
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  (branch merge, don't forget to commit)
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  $ hg ci -Ammerge
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Bogus fast-forward should fail:
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  $ hg merge b
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  abort: merging with a working directory ancestor has no effect
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  [255]
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Even with strange revset (issue4465)
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  $ hg merge ::.
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  abort: merging with a working directory ancestor has no effect
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  [255]
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