upstream/mercurial-mirror Files · tests/test-strip-branch-cache.t

branchcache: explicitly track inheritence "state"...

branchcache: explicitly track inheritence "state" We move from a binary "dirty" flag to a three value "state": "clean", "inherited", "dirty". The "inherited" means that the branch cache is not only "clean", but it is a duplicate of its parent filter. If a branch cache is "inherited", we can non only skip writing its value on disk, but it is a good idea to delete any stale value on disk, as those will just waste time (and possibly induce bug) in the future. We only do this in the update related to transaction or explicit cache update (e.g `hg debugupdatecache`). Deleting the file when we simply detected a stall cache during a read only operation seems more dangerous. We rename `copy` to `inherit_for` to clarify we associate a stronger semantic to the operation.

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        marmoute
    
branchcache: stop writing more branchcache file on disk than needed...

              r52385
            
      This test cover a bug that no longer exist.

        Arseniy Alekseyev
    
branchmap: add a test that shows bad interaction with strip...

              r49962
            
      Define helpers.

        $ hg_log () { hg log -G -T "{rev}:{node|short}"; }

        $ commit () { echo "foo - ${2:-$1}" > $1; hg commit -Aqm "Edited $1"; }

        $ strip() { hg --config extensions.strip= strip -q -r "$1" ; }

      Setup hg repo.

        $ hg init repo

        $ cd repo

        $ touch x; hg add x; hg commit -m "initial"

        $ hg clone -q . ../clone

        $ commit a

        $ cd ../clone

        $ commit b

        $ hg pull -q ../repo

        marmoute
    
branchcache: stop writing more branchcache file on disk than needed...

              r52385
            
        $ ls -1 .hg/cache/branch?*

        .hg/cache/branch2-base

        .hg/cache/branch2-served

        $ cat .hg/cache/branch?-served

        Arseniy Alekseyev
    
branchmap: add a test that shows bad interaction with strip...

              r49962
            
        222ae9789a75703f9836e44de7db179cbfd420ee 2

        a3498d6e39376d2456425dd8c692367bdbf00fa2 o default

        222ae9789a75703f9836e44de7db179cbfd420ee o default

        $ hg_log

        o  2:222ae9789a75

        |

        | @  1:a3498d6e3937

        |/

        o  0:7ab0a3bd758a

        $ strip '1:'

        marmoute
    
branchcache: stop writing more branchcache file on disk than needed...

              r52385
            
      After the strip the "served" cache is now identical to the "base" one, and the

      older one have been actively deleted.

        Arseniy Alekseyev
    
branchmap: add a test that shows bad interaction with strip...

              r49962
            
        marmoute
    
branchcache: stop writing more branchcache file on disk than needed...

              r52385
            
        $ ls -1 .hg/cache/branch?*

        .hg/cache/branch2-base

        marmoute
    
branchcache: explicitly track inheritence "state"...

              r52386
            
        $ cat .hg/cache/branch?-base

        7ab0a3bd758a58b9f79557ce708533e627776cce 0

        7ab0a3bd758a58b9f79557ce708533e627776cce o default

        Arseniy Alekseyev
    
branchmap: add a test that shows bad interaction with strip...

              r49962
            
        marmoute
    
branchcache: stop writing more branchcache file on disk than needed...

              r52385
            
      We do a new commit and we get a new valid branchmap for the served version

        Arseniy Alekseyev
    
branchmap: add a test that shows bad interaction with strip...

              r49962
            
        marmoute
    
branchcache: stop writing more branchcache file on disk than needed...

              r52385
            
        $ commit c

        $ ls -1 .hg/cache/branch?*

        .hg/cache/branch2-base

        .hg/cache/branch2-served

        $ cat .hg/cache/branch?-served

        a1602b357cfca067600406eb19060c7128804d72 1

        a1602b357cfca067600406eb19060c7128804d72 o default

        Arseniy Alekseyev
    
branchmap: add a test that shows bad interaction with strip...

              r49962
            
      On pull we end up with the same tip, and so wrongly reuse the invalid cache and crash.

        marmoute
    
branchcache: stop writing more branchcache file on disk than needed...

              r52385
            
        $ hg pull ../repo --quiet

        $ hg heads -T '{rev} {node} {branch}\n'

        2 222ae9789a75703f9836e44de7db179cbfd420ee default

        1 a1602b357cfca067600406eb19060c7128804d72 default

        $ ls -1 .hg/cache/branch?*

        .hg/cache/branch2-base

        .hg/cache/branch2-served

        $ cat .hg/cache/branch?-served

        222ae9789a75703f9836e44de7db179cbfd420ee 2

        a1602b357cfca067600406eb19060c7128804d72 o default

        222ae9789a75703f9836e44de7db179cbfd420ee o default

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marmoute branchcache: stop writing more branchcache file on disk than needed...	r52385	This test cover a bug that no longer exist.

Arseniy Alekseyev branchmap: add a test that shows bad interaction with strip...	r49962	Define helpers.

		$ hg_log () { hg log -G -T "{rev}:{node\|short}"; }
		$ commit () { echo "foo - ${2:-$1}" > $1; hg commit -Aqm "Edited $1"; }
		$ strip() { hg --config extensions.strip= strip -q -r "$1" ; }

		Setup hg repo.

		$ hg init repo
		$ cd repo
		$ touch x; hg add x; hg commit -m "initial"
		$ hg clone -q . ../clone
		$ commit a

		$ cd ../clone

		$ commit b

		$ hg pull -q ../repo

marmoute branchcache: stop writing more branchcache file on disk than needed...	r52385	$ ls -1 .hg/cache/branch?*
		.hg/cache/branch2-base
		.hg/cache/branch2-served
		$ cat .hg/cache/branch?-served
Arseniy Alekseyev branchmap: add a test that shows bad interaction with strip...	r49962	222ae9789a75703f9836e44de7db179cbfd420ee 2
		a3498d6e39376d2456425dd8c692367bdbf00fa2 o default
		222ae9789a75703f9836e44de7db179cbfd420ee o default

		$ hg_log
		o 2:222ae9789a75
		\|
		\| @ 1:a3498d6e3937
		\|/
		o 0:7ab0a3bd758a


		$ strip '1:'

marmoute branchcache: stop writing more branchcache file on disk than needed...	r52385	After the strip the "served" cache is now identical to the "base" one, and the
		older one have been actively deleted.
Arseniy Alekseyev branchmap: add a test that shows bad interaction with strip...	r49962
marmoute branchcache: stop writing more branchcache file on disk than needed...	r52385	$ ls -1 .hg/cache/branch?*
		.hg/cache/branch2-base
marmoute branchcache: explicitly track inheritence "state"...	r52386	$ cat .hg/cache/branch?-base
		7ab0a3bd758a58b9f79557ce708533e627776cce 0
		7ab0a3bd758a58b9f79557ce708533e627776cce o default
Arseniy Alekseyev branchmap: add a test that shows bad interaction with strip...	r49962
marmoute branchcache: stop writing more branchcache file on disk than needed...	r52385	We do a new commit and we get a new valid branchmap for the served version
Arseniy Alekseyev branchmap: add a test that shows bad interaction with strip...	r49962
marmoute branchcache: stop writing more branchcache file on disk than needed...	r52385	$ commit c
		$ ls -1 .hg/cache/branch?*
		.hg/cache/branch2-base
		.hg/cache/branch2-served
		$ cat .hg/cache/branch?-served
		a1602b357cfca067600406eb19060c7128804d72 1
		a1602b357cfca067600406eb19060c7128804d72 o default

Arseniy Alekseyev branchmap: add a test that shows bad interaction with strip...	r49962
		On pull we end up with the same tip, and so wrongly reuse the invalid cache and crash.

marmoute branchcache: stop writing more branchcache file on disk than needed...	r52385	$ hg pull ../repo --quiet
		$ hg heads -T '{rev} {node} {branch}\n'
		2 222ae9789a75703f9836e44de7db179cbfd420ee default
		1 a1602b357cfca067600406eb19060c7128804d72 default
		$ ls -1 .hg/cache/branch?*
		.hg/cache/branch2-base
		.hg/cache/branch2-served
		$ cat .hg/cache/branch?-served
		222ae9789a75703f9836e44de7db179cbfd420ee 2
		a1602b357cfca067600406eb19060c7128804d72 o default
		222ae9789a75703f9836e44de7db179cbfd420ee o default