upstream/mercurial-mirror Files · tests/test-repo-compengines.t

windows: add win32com.shell to demandimport ignore list...

windows: add win32com.shell to demandimport ignore list Module 'appdirs' tries to import win32com.shell (and catch ImportError as an indication of failure) to check whether some further functionality should be implemented one or another way [1]. Of course, demandimport lets it down, so if we want appdirs to work we have to add it to demandimport's ignore list. The reason we want appdirs to work is becuase it is used by setuptools [2] to determine egg cache location. Only fairly recent versions of setuptools depend on this so people don't see this often. [1] https://github.com/ActiveState/appdirs/blob/master/appdirs.py#L560 [2] https://github.com/pypa/setuptools/blob/aae0a928119d2a178882c32bded02270e30d0273/pkg_resources/__init__.py#L1369

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      A new repository uses zlib storage, which doesn't need a requirement

        $ hg init default

        $ cd default

        $ cat .hg/requires

        dotencode

        fncache

        generaldelta

        revlogv1

        store

        $ touch foo

        $ hg -q commit -A -m 'initial commit with a lot of repeated repeated repeated text to trigger compression'

        $ hg debugrevlog -c | grep 0x78

            0x78 (x)  :   1 (100.00%)

            0x78 (x)  : 110 (100.00%)

        $ cd ..

      Unknown compression engine to format.compression aborts

        $ hg --config experimental.format.compression=unknown init unknown

        abort: compression engine unknown defined by experimental.format.compression not available

        (run "hg debuginstall" to list available compression engines)

        [255]

      A requirement specifying an unknown compression engine results in bail

        $ hg init unknownrequirement

        $ cd unknownrequirement

        $ echo exp-compression-unknown >> .hg/requires

        $ hg log

        abort: repository requires features unknown to this Mercurial: exp-compression-unknown!

        (see https://mercurial-scm.org/wiki/MissingRequirement for more information)

        [255]

        $ cd ..

      #if zstd

        $ hg --config experimental.format.compression=zstd init zstd

        $ cd zstd

        $ cat .hg/requires

        dotencode

        exp-compression-zstd

        fncache

        generaldelta

        revlogv1

        store

        $ touch foo

        $ hg -q commit -A -m 'initial commit with a lot of repeated repeated repeated text'

        $ hg debugrevlog -c | grep 0x28

            0x28      :  1 (100.00%)

            0x28      : 98 (100.00%)

        $ cd ..

      Specifying a new format.compression on an existing repo won't introduce data

      with that engine or a requirement

        $ cd default

        $ touch bar

        $ hg --config experimental.format.compression=zstd -q commit -A -m 'add bar with a lot of repeated repeated repeated text'

        $ cat .hg/requires

        dotencode

        fncache

        generaldelta

        revlogv1

        store

        $ hg debugrevlog -c | grep 0x78

            0x78 (x)  :   2 (100.00%)

            0x78 (x)  : 199 (100.00%)

      #endif

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				A new repository uses zlib storage, which doesn't need a requirement

				$ hg init default
				$ cd default
				$ cat .hg/requires
				dotencode
				fncache
				generaldelta
				revlogv1
				store

				$ touch foo
				$ hg -q commit -A -m 'initial commit with a lot of repeated repeated repeated text to trigger compression'
				$ hg debugrevlog -c \| grep 0x78
				0x78 (x) : 1 (100.00%)
				0x78 (x) : 110 (100.00%)

				$ cd ..

				Unknown compression engine to format.compression aborts

				$ hg --config experimental.format.compression=unknown init unknown
				abort: compression engine unknown defined by experimental.format.compression not available
				(run "hg debuginstall" to list available compression engines)
				[255]

				A requirement specifying an unknown compression engine results in bail

				$ hg init unknownrequirement
				$ cd unknownrequirement
				$ echo exp-compression-unknown >> .hg/requires
				$ hg log
				abort: repository requires features unknown to this Mercurial: exp-compression-unknown!
				(see https://mercurial-scm.org/wiki/MissingRequirement for more information)
				[255]

				$ cd ..

				#if zstd

				$ hg --config experimental.format.compression=zstd init zstd
				$ cd zstd
				$ cat .hg/requires
				dotencode
				exp-compression-zstd
				fncache
				generaldelta
				revlogv1
				store

				$ touch foo
				$ hg -q commit -A -m 'initial commit with a lot of repeated repeated repeated text'

				$ hg debugrevlog -c \| grep 0x28
				0x28 : 1 (100.00%)
				0x28 : 98 (100.00%)

				$ cd ..

				Specifying a new format.compression on an existing repo won't introduce data
				with that engine or a requirement

				$ cd default
				$ touch bar
				$ hg --config experimental.format.compression=zstd -q commit -A -m 'add bar with a lot of repeated repeated repeated text'

				$ cat .hg/requires
				dotencode
				fncache
				generaldelta
				revlogv1
				store

				$ hg debugrevlog -c \| grep 0x78
				0x78 (x) : 2 (100.00%)
				0x78 (x) : 199 (100.00%)

				#endif