upstream/mercurial-mirror Files · tests/test-lfconvert.t

posix: always seek to EOF when opening a file in append mode...

posix: always seek to EOF when opening a file in append mode Python 3 already does this, so skip it there. Consider the program: #include <stdio.h> int main() { FILE *f = fopen("narf", "w"); fprintf(f, "narf\n"); fclose(f); f = fopen("narf", "a"); printf("%ld\n", ftell(f)); fprintf(f, "troz\n"); printf("%ld\n", ftell(f)); return 0; } on macOS, FreeBSD, and Linux with glibc, this program prints 5 10 but on musl libc (Alpine Linux and probably others) this prints 0 10 By my reading of https://pubs.opengroup.org/onlinepubs/009695399/functions/fopen.html this is technically correct, specifically: > Opening a file with append mode (a as the first character in the > mode argument) shall cause all subsequent writes to the file to be > forced to the then current end-of-file, regardless of intervening > calls to fseek(). in other words, the file position doesn't really matter in append-mode files, and we can't depend on it being at all meaningful unless we perform a seek() before tell() after open(..., 'a'). Experimentally after a .write() we can do a .tell() and it'll always be reasonable, but I'm unclear from reading the specification if that's a smart thing to rely on. This matches what we do on Windows and what Python 3 does for free, so let's just be consistent. Thanks to Yuya for the idea.

Kyle Lippincott - - Load All Authors

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        $ USERCACHE="$TESTTMP/cache"; export USERCACHE

        $ mkdir "${USERCACHE}"

        $ cat >> $HGRCPATH <<EOF

        > [extensions]

        > largefiles =

        > share =

        > strip =

        > convert =

        > [largefiles]

        > minsize = 0.5

        > patterns = **.other

        >     **.dat

        > usercache=${USERCACHE}

        > EOF

      "lfconvert" works

        $ hg init bigfile-repo

        $ cd bigfile-repo

        $ cat >> .hg/hgrc <<EOF

        > [extensions]

        > largefiles = !

        > EOF

        $ mkdir sub

        $ dd if=/dev/zero bs=1k count=256 > large 2> /dev/null

        $ dd if=/dev/zero bs=1k count=256 > large2 2> /dev/null

        $ echo normal > normal1

        $ echo alsonormal > sub/normal2

        $ dd if=/dev/zero bs=1k count=10 > sub/maybelarge.dat 2> /dev/null

        $ hg addremove

        adding large

        adding large2

        adding normal1

        adding sub/maybelarge.dat

        adding sub/normal2

        $ hg commit -m"add large, normal1" large normal1

        $ hg commit -m"add sub/*" sub

      Test tag parsing

        $ cat >> .hgtags <<EOF

        > IncorrectlyFormattedTag!

        > invalidhash sometag

        > 0123456789abcdef anothertag

        > EOF

        $ hg add .hgtags

        $ hg commit -m"add large2" large2 .hgtags

      Test link+rename largefile codepath

        $ [ -d .hg/largefiles ] && echo fail || echo pass

        pass

        $ cd ..

        $ hg lfconvert --size 0.2 bigfile-repo largefiles-repo

        initializing destination largefiles-repo

        skipping incorrectly formatted tag IncorrectlyFormattedTag!

        skipping incorrectly formatted id invalidhash

        no mapping for id 0123456789abcdef

      #if symlink

        $ hg --cwd bigfile-repo rename large2 large3

        $ ln -sf large bigfile-repo/large3

        $ hg --cwd bigfile-repo commit -m"make large2 a symlink" large2 large3

        $ hg lfconvert --size 0.2 bigfile-repo largefiles-repo-symlink

        initializing destination largefiles-repo-symlink

        skipping incorrectly formatted tag IncorrectlyFormattedTag!

        skipping incorrectly formatted id invalidhash

        no mapping for id 0123456789abcdef

        abort: renamed/copied largefile large3 becomes symlink

        [255]

      #endif

        $ cd bigfile-repo

        $ hg strip --no-backup 2

        0 files updated, 0 files merged, 2 files removed, 0 files unresolved

        $ cd ..

        $ rm -rf largefiles-repo largefiles-repo-symlink

        $ hg lfconvert --size 0.2 bigfile-repo largefiles-repo

        initializing destination largefiles-repo

      "lfconvert" converts content correctly

        $ cd largefiles-repo

        $ hg up

        getting changed largefiles

        2 largefiles updated, 0 removed

        4 files updated, 0 files merged, 0 files removed, 0 files unresolved

        $ hg locate

        .hglf/large

        .hglf/sub/maybelarge.dat

        normal1

        sub/normal2

        $ cat normal1

        normal

        $ cat sub/normal2

        alsonormal

        $ md5sum.py large sub/maybelarge.dat

        ec87a838931d4d5d2e94a04644788a55  large

        1276481102f218c981e0324180bafd9f  sub/maybelarge.dat

      "lfconvert" adds 'largefiles' to .hg/requires.

        $ cat .hg/requires

        dotencode

        fncache

        generaldelta

        largefiles

        revlogv1

        sparserevlog

        store

        testonly-simplestore (reposimplestore !)

      "lfconvert" includes a newline at the end of the standin files.

        $ cat .hglf/large .hglf/sub/maybelarge.dat

        2e000fa7e85759c7f4c254d4d9c33ef481e459a7

        34e163be8e43c5631d8b92e9c43ab0bf0fa62b9c

        $ cd ..

      add some changesets to rename/remove/merge

        $ cd bigfile-repo

        $ hg mv -q sub stuff

        $ hg commit -m"rename sub/ to stuff/"

        $ hg update -q 1

        $ echo blah >> normal3

        $ echo blah >> sub/normal2

        $ echo blah >> sub/maybelarge.dat

        $ md5sum.py sub/maybelarge.dat

        1dd0b99ff80e19cff409702a1d3f5e15  sub/maybelarge.dat

        $ hg commit -A -m"add normal3, modify sub/*"

        adding normal3

        created new head

        $ hg rm large normal3

        $ hg commit -q -m"remove large, normal3"

        $ hg merge

        tool internal:merge (for pattern stuff/maybelarge.dat) can't handle binary

        no tool found to merge stuff/maybelarge.dat

        keep (l)ocal [working copy], take (o)ther [merge rev], or leave (u)nresolved for stuff/maybelarge.dat? u

        merging sub/normal2 and stuff/normal2 to stuff/normal2

        0 files updated, 1 files merged, 0 files removed, 1 files unresolved

        use 'hg resolve' to retry unresolved file merges or 'hg merge --abort' to abandon

        [1]

        $ hg cat -r . sub/maybelarge.dat > stuff/maybelarge.dat

        $ hg resolve -m stuff/maybelarge.dat

        (no more unresolved files)

        $ hg commit -m"merge"

        $ hg log -G --template "{rev}:{node|short}  {desc|firstline}\n"

        @    5:4884f215abda  merge

        |\

        | o  4:7285f817b77e  remove large, normal3

        | |

        | o  3:67e3892e3534  add normal3, modify sub/*

        | |

        o |  2:c96c8beb5d56  rename sub/ to stuff/

        |/

        o  1:020c65d24e11  add sub/*

        |

        o  0:117b8328f97a  add large, normal1

        $ cd ..

      lfconvert with rename, merge, and remove

        $ rm -rf largefiles-repo

        $ hg lfconvert --size 0.2 bigfile-repo largefiles-repo

        initializing destination largefiles-repo

        $ cd largefiles-repo

        $ hg log -G --template "{rev}:{node|short}  {desc|firstline}\n"

        o    5:8e05f5f2b77e  merge

        |\

        | o  4:a5a02de7a8e4  remove large, normal3

        | |

        | o  3:55759520c76f  add normal3, modify sub/*

        | |

        o |  2:261ad3f3f037  rename sub/ to stuff/

        |/

        o  1:334e5237836d  add sub/*

        |

        o  0:d4892ec57ce2  add large, normal1

        $ hg locate -r 2

        .hglf/large

        .hglf/stuff/maybelarge.dat

        normal1

        stuff/normal2

        $ hg locate -r 3

        .hglf/large

        .hglf/sub/maybelarge.dat

        normal1

        normal3

        sub/normal2

        $ hg locate -r 4

        .hglf/sub/maybelarge.dat

        normal1

        sub/normal2

        $ hg locate -r 5

        .hglf/stuff/maybelarge.dat

        normal1

        stuff/normal2

        $ hg update

        getting changed largefiles

        1 largefiles updated, 0 removed

        3 files updated, 0 files merged, 0 files removed, 0 files unresolved

        $ cat stuff/normal2

        alsonormal

        blah

        $ md5sum.py stuff/maybelarge.dat

        1dd0b99ff80e19cff409702a1d3f5e15  stuff/maybelarge.dat

        $ cat .hglf/stuff/maybelarge.dat

        76236b6a2c6102826c61af4297dd738fb3b1de38

        $ cd ..

      "lfconvert" error cases

        $ hg lfconvert http://localhost/foo foo

        abort: http://localhost/foo is not a local Mercurial repo

        [255]

        $ hg lfconvert foo ssh://localhost/foo

        abort: ssh://localhost/foo is not a local Mercurial repo

        [255]

        $ hg lfconvert nosuchrepo foo

        abort: repository nosuchrepo not found!

        [255]

        $ hg share -q -U bigfile-repo shared

        $ printf 'bogus' > shared/.hg/sharedpath

        $ hg lfconvert shared foo

        abort: .hg/sharedpath points to nonexistent directory $TESTTMP/bogus!

        [255]

        $ hg lfconvert bigfile-repo largefiles-repo

        initializing destination largefiles-repo

        abort: repository largefiles-repo already exists!

        [255]

      add another largefile to the new largefiles repo

        $ cd largefiles-repo

        $ dd if=/dev/zero bs=1k count=1k > anotherlarge 2> /dev/null

        $ hg add --lfsize=1 anotherlarge

        $ hg commit -m "add anotherlarge (should be a largefile)"

        $ cat .hglf/anotherlarge

        3b71f43ff30f4b15b5cd85dd9e95ebc7e84eb5a3

        $ hg tag mytag

        $ cd ..

      round-trip: converting back to a normal (non-largefiles) repo with

      "lfconvert --to-normal" should give the same as ../bigfile-repo.  The

      convert extension is disabled to show config items can be loaded without it.

        $ cd largefiles-repo

        $ hg --config extensions.convert=! lfconvert --to-normal . ../normal-repo

        initializing destination ../normal-repo

        0 additional largefiles cached

        scanning source...

        sorting...

        converting...

        7 add large, normal1

        6 add sub/*

        5 rename sub/ to stuff/

        4 add normal3, modify sub/*

        3 remove large, normal3

        2 merge

        1 add anotherlarge (should be a largefile)

        0 Added tag mytag for changeset abacddda7028

        $ cd ../normal-repo

        $ cat >> .hg/hgrc <<EOF

        > [extensions]

        > largefiles = !

        > EOF

        $ hg log -G --template "{rev}:{node|short}  {desc|firstline}\n"

        o  7:b5fedc110b9d  Added tag mytag for changeset 867ab992ecf4

        |

        o  6:867ab992ecf4  add anotherlarge (should be a largefile)

        |

        o    5:4884f215abda  merge

        |\

        | o  4:7285f817b77e  remove large, normal3

        | |

        | o  3:67e3892e3534  add normal3, modify sub/*

        | |

        o |  2:c96c8beb5d56  rename sub/ to stuff/

        |/

        o  1:020c65d24e11  add sub/*

        |

        o  0:117b8328f97a  add large, normal1

        $ hg update

        5 files updated, 0 files merged, 0 files removed, 0 files unresolved

        $ hg locate

        .hgtags

        anotherlarge

        normal1

        stuff/maybelarge.dat

        stuff/normal2

        $ [ -d .hg/largefiles ] && echo fail || echo pass

        pass

        $ cd ..

      Clearing the usercache ensures that commitctx doesn't try to cache largefiles

      from the working dir on a convert.

        $ rm "${USERCACHE}"/*

        $ hg convert largefiles-repo

        assuming destination largefiles-repo-hg

        initializing destination largefiles-repo-hg repository

        scanning source...

        sorting...

        converting...

        7 add large, normal1

        6 add sub/*

        5 rename sub/ to stuff/

        4 add normal3, modify sub/*

        3 remove large, normal3

        2 merge

        1 add anotherlarge (should be a largefile)

        0 Added tag mytag for changeset abacddda7028

        $ hg -R largefiles-repo-hg log -G --template "{rev}:{node|short}  {desc|firstline}\n"

        o  7:2f08f66459b7  Added tag mytag for changeset 17126745edfd

        |

        o  6:17126745edfd  add anotherlarge (should be a largefile)

        |

        o    5:9cc5aa7204f0  merge

        |\

        | o  4:a5a02de7a8e4  remove large, normal3

        | |

        | o  3:55759520c76f  add normal3, modify sub/*

        | |

        o |  2:261ad3f3f037  rename sub/ to stuff/

        |/

        o  1:334e5237836d  add sub/*

        |

        o  0:d4892ec57ce2  add large, normal1

      Verify will fail (for now) if the usercache is purged before converting, since

      largefiles are not cached in the converted repo's local store by the conversion

      process.

        $ cd largefiles-repo-hg

        $ cat >> .hg/hgrc <<EOF

        > [experimental]

        > evolution.createmarkers=True

        > EOF

        $ hg debugobsolete `hg log -r tip -T "{node}"`

        obsoleted 1 changesets

        $ cd ..

        $ hg -R largefiles-repo-hg verify --large --lfa

        checking changesets

        checking manifests

        crosschecking files in changesets and manifests

        checking files

        checked 8 changesets with 13 changes to 9 files

        searching 7 changesets for largefiles

        changeset 0:d4892ec57ce2: large references missing $TESTTMP/largefiles-repo-hg/.hg/largefiles/2e000fa7e85759c7f4c254d4d9c33ef481e459a7

        changeset 1:334e5237836d: sub/maybelarge.dat references missing $TESTTMP/largefiles-repo-hg/.hg/largefiles/34e163be8e43c5631d8b92e9c43ab0bf0fa62b9c

        changeset 2:261ad3f3f037: stuff/maybelarge.dat references missing $TESTTMP/largefiles-repo-hg/.hg/largefiles/34e163be8e43c5631d8b92e9c43ab0bf0fa62b9c

        changeset 3:55759520c76f: sub/maybelarge.dat references missing $TESTTMP/largefiles-repo-hg/.hg/largefiles/76236b6a2c6102826c61af4297dd738fb3b1de38

        changeset 5:9cc5aa7204f0: stuff/maybelarge.dat references missing $TESTTMP/largefiles-repo-hg/.hg/largefiles/76236b6a2c6102826c61af4297dd738fb3b1de38

        changeset 6:17126745edfd: anotherlarge references missing $TESTTMP/largefiles-repo-hg/.hg/largefiles/3b71f43ff30f4b15b5cd85dd9e95ebc7e84eb5a3

        verified existence of 6 revisions of 4 largefiles

        [1]

        $ hg -R largefiles-repo-hg showconfig paths

        [1]

      Avoid a traceback if a largefile isn't available (issue3519)

      Ensure the largefile can be cached in the source if necessary

        $ hg clone -U largefiles-repo issue3519

        $ rm -f "${USERCACHE}"/*

        $ hg -R issue3519 branch -q mybranch

        $ hg -R issue3519 ci -m 'change branch name only'

        $ hg lfconvert --to-normal issue3519 normalized3519

        initializing destination normalized3519

        4 additional largefiles cached

        scanning source...

        sorting...

        converting...

        8 add large, normal1

        7 add sub/*

        6 rename sub/ to stuff/

        5 add normal3, modify sub/*

        4 remove large, normal3

        3 merge

        2 add anotherlarge (should be a largefile)

        1 Added tag mytag for changeset abacddda7028

        0 change branch name only

      Ensure empty commits aren't lost in the conversion

        $ hg -R normalized3519 log -r tip -T '{desc}\n'

        change branch name only

      Ensure the abort message is useful if a largefile is entirely unavailable

        $ rm -rf normalized3519

        $ rm "${USERCACHE}"/*

        $ rm issue3519/.hg/largefiles/*

        $ rm largefiles-repo/.hg/largefiles/*

        $ hg lfconvert --to-normal issue3519 normalized3519

        initializing destination normalized3519

        anotherlarge: largefile 3b71f43ff30f4b15b5cd85dd9e95ebc7e84eb5a3 not available from file:/*/$TESTTMP/largefiles-repo (glob)

        stuff/maybelarge.dat: largefile 76236b6a2c6102826c61af4297dd738fb3b1de38 not available from file:/*/$TESTTMP/largefiles-repo (glob)

        stuff/maybelarge.dat: largefile 76236b6a2c6102826c61af4297dd738fb3b1de38 not available from file:/*/$TESTTMP/largefiles-repo (glob)

        sub/maybelarge.dat: largefile 76236b6a2c6102826c61af4297dd738fb3b1de38 not available from file:/*/$TESTTMP/largefiles-repo (glob)

        large: largefile 2e000fa7e85759c7f4c254d4d9c33ef481e459a7 not available from file:/*/$TESTTMP/largefiles-repo (glob)

        sub/maybelarge.dat: largefile 76236b6a2c6102826c61af4297dd738fb3b1de38 not available from file:/*/$TESTTMP/largefiles-repo (glob)

        large: largefile 2e000fa7e85759c7f4c254d4d9c33ef481e459a7 not available from file:/*/$TESTTMP/largefiles-repo (glob)

        stuff/maybelarge.dat: largefile 34e163be8e43c5631d8b92e9c43ab0bf0fa62b9c not available from file:/*/$TESTTMP/largefiles-repo (glob)

        large: largefile 2e000fa7e85759c7f4c254d4d9c33ef481e459a7 not available from file:/*/$TESTTMP/largefiles-repo (glob)

        sub/maybelarge.dat: largefile 34e163be8e43c5631d8b92e9c43ab0bf0fa62b9c not available from file:/*/$TESTTMP/largefiles-repo (glob)

        large: largefile 2e000fa7e85759c7f4c254d4d9c33ef481e459a7 not available from file:/*/$TESTTMP/largefiles-repo (glob)

        0 additional largefiles cached

        11 largefiles failed to download

        abort: all largefiles must be present locally

        [255]

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				$ USERCACHE="$TESTTMP/cache"; export USERCACHE
				$ mkdir "${USERCACHE}"
				$ cat >> $HGRCPATH <<EOF
				> [extensions]
				> largefiles =
				> share =
				> strip =
				> convert =
				> [largefiles]
				> minsize = 0.5
				> patterns = **.other
				> **.dat
				> usercache=${USERCACHE}
				> EOF

				"lfconvert" works
				$ hg init bigfile-repo
				$ cd bigfile-repo
				$ cat >> .hg/hgrc <<EOF
				> [extensions]
				> largefiles = !
				> EOF
				$ mkdir sub
				$ dd if=/dev/zero bs=1k count=256 > large 2> /dev/null
				$ dd if=/dev/zero bs=1k count=256 > large2 2> /dev/null
				$ echo normal > normal1
				$ echo alsonormal > sub/normal2
				$ dd if=/dev/zero bs=1k count=10 > sub/maybelarge.dat 2> /dev/null
				$ hg addremove
				adding large
				adding large2
				adding normal1
				adding sub/maybelarge.dat
				adding sub/normal2
				$ hg commit -m"add large, normal1" large normal1
				$ hg commit -m"add sub/*" sub

				Test tag parsing
				$ cat >> .hgtags <<EOF
				> IncorrectlyFormattedTag!
				> invalidhash sometag
				> 0123456789abcdef anothertag
				> EOF
				$ hg add .hgtags
				$ hg commit -m"add large2" large2 .hgtags

				Test link+rename largefile codepath
				$ [ -d .hg/largefiles ] && echo fail \|\| echo pass
				pass
				$ cd ..
				$ hg lfconvert --size 0.2 bigfile-repo largefiles-repo
				initializing destination largefiles-repo
				skipping incorrectly formatted tag IncorrectlyFormattedTag!
				skipping incorrectly formatted id invalidhash
				no mapping for id 0123456789abcdef
				#if symlink
				$ hg --cwd bigfile-repo rename large2 large3
				$ ln -sf large bigfile-repo/large3
				$ hg --cwd bigfile-repo commit -m"make large2 a symlink" large2 large3
				$ hg lfconvert --size 0.2 bigfile-repo largefiles-repo-symlink
				initializing destination largefiles-repo-symlink
				skipping incorrectly formatted tag IncorrectlyFormattedTag!
				skipping incorrectly formatted id invalidhash
				no mapping for id 0123456789abcdef
				abort: renamed/copied largefile large3 becomes symlink
				[255]
				#endif
				$ cd bigfile-repo
				$ hg strip --no-backup 2
				0 files updated, 0 files merged, 2 files removed, 0 files unresolved
				$ cd ..
				$ rm -rf largefiles-repo largefiles-repo-symlink

				$ hg lfconvert --size 0.2 bigfile-repo largefiles-repo
				initializing destination largefiles-repo

				"lfconvert" converts content correctly
				$ cd largefiles-repo
				$ hg up
				getting changed largefiles
				2 largefiles updated, 0 removed
				4 files updated, 0 files merged, 0 files removed, 0 files unresolved
				$ hg locate
				.hglf/large
				.hglf/sub/maybelarge.dat
				normal1
				sub/normal2
				$ cat normal1
				normal
				$ cat sub/normal2
				alsonormal
				$ md5sum.py large sub/maybelarge.dat
				ec87a838931d4d5d2e94a04644788a55 large
				1276481102f218c981e0324180bafd9f sub/maybelarge.dat

				"lfconvert" adds 'largefiles' to .hg/requires.
				$ cat .hg/requires
				dotencode
				fncache
				generaldelta
				largefiles
				revlogv1
				sparserevlog
				store
				testonly-simplestore (reposimplestore !)

				"lfconvert" includes a newline at the end of the standin files.
				$ cat .hglf/large .hglf/sub/maybelarge.dat
				2e000fa7e85759c7f4c254d4d9c33ef481e459a7
				34e163be8e43c5631d8b92e9c43ab0bf0fa62b9c
				$ cd ..

				add some changesets to rename/remove/merge
				$ cd bigfile-repo
				$ hg mv -q sub stuff
				$ hg commit -m"rename sub/ to stuff/"
				$ hg update -q 1
				$ echo blah >> normal3
				$ echo blah >> sub/normal2
				$ echo blah >> sub/maybelarge.dat
				$ md5sum.py sub/maybelarge.dat
				1dd0b99ff80e19cff409702a1d3f5e15 sub/maybelarge.dat
				$ hg commit -A -m"add normal3, modify sub/*"
				adding normal3
				created new head
				$ hg rm large normal3
				$ hg commit -q -m"remove large, normal3"
				$ hg merge
				tool internal:merge (for pattern stuff/maybelarge.dat) can't handle binary
				no tool found to merge stuff/maybelarge.dat
				keep (l)ocal [working copy], take (o)ther [merge rev], or leave (u)nresolved for stuff/maybelarge.dat? u
				merging sub/normal2 and stuff/normal2 to stuff/normal2
				0 files updated, 1 files merged, 0 files removed, 1 files unresolved
				use 'hg resolve' to retry unresolved file merges or 'hg merge --abort' to abandon
				[1]
				$ hg cat -r . sub/maybelarge.dat > stuff/maybelarge.dat
				$ hg resolve -m stuff/maybelarge.dat
				(no more unresolved files)
				$ hg commit -m"merge"
				$ hg log -G --template "{rev}:{node\|short} {desc\|firstline}\n"
				@ 5:4884f215abda merge
				\|\
				\| o 4:7285f817b77e remove large, normal3
				\| \|
				\| o 3:67e3892e3534 add normal3, modify sub/*
				\| \|
				o \| 2:c96c8beb5d56 rename sub/ to stuff/
				\|/
				o 1:020c65d24e11 add sub/*
				\|
				o 0:117b8328f97a add large, normal1

				$ cd ..

				lfconvert with rename, merge, and remove
				$ rm -rf largefiles-repo
				$ hg lfconvert --size 0.2 bigfile-repo largefiles-repo
				initializing destination largefiles-repo
				$ cd largefiles-repo
				$ hg log -G --template "{rev}:{node\|short} {desc\|firstline}\n"
				o 5:8e05f5f2b77e merge
				\|\
				\| o 4:a5a02de7a8e4 remove large, normal3
				\| \|
				\| o 3:55759520c76f add normal3, modify sub/*
				\| \|
				o \| 2:261ad3f3f037 rename sub/ to stuff/
				\|/
				o 1:334e5237836d add sub/*
				\|
				o 0:d4892ec57ce2 add large, normal1

				$ hg locate -r 2
				.hglf/large
				.hglf/stuff/maybelarge.dat
				normal1
				stuff/normal2
				$ hg locate -r 3
				.hglf/large
				.hglf/sub/maybelarge.dat
				normal1
				normal3
				sub/normal2
				$ hg locate -r 4
				.hglf/sub/maybelarge.dat
				normal1
				sub/normal2
				$ hg locate -r 5
				.hglf/stuff/maybelarge.dat
				normal1
				stuff/normal2
				$ hg update
				getting changed largefiles
				1 largefiles updated, 0 removed
				3 files updated, 0 files merged, 0 files removed, 0 files unresolved
				$ cat stuff/normal2
				alsonormal
				blah
				$ md5sum.py stuff/maybelarge.dat
				1dd0b99ff80e19cff409702a1d3f5e15 stuff/maybelarge.dat
				$ cat .hglf/stuff/maybelarge.dat
				76236b6a2c6102826c61af4297dd738fb3b1de38
				$ cd ..

				"lfconvert" error cases
				$ hg lfconvert http://localhost/foo foo
				abort: http://localhost/foo is not a local Mercurial repo
				[255]
				$ hg lfconvert foo ssh://localhost/foo
				abort: ssh://localhost/foo is not a local Mercurial repo
				[255]
				$ hg lfconvert nosuchrepo foo
				abort: repository nosuchrepo not found!
				[255]
				$ hg share -q -U bigfile-repo shared
				$ printf 'bogus' > shared/.hg/sharedpath
				$ hg lfconvert shared foo
				abort: .hg/sharedpath points to nonexistent directory $TESTTMP/bogus!
				[255]
				$ hg lfconvert bigfile-repo largefiles-repo
				initializing destination largefiles-repo
				abort: repository largefiles-repo already exists!
				[255]

				add another largefile to the new largefiles repo
				$ cd largefiles-repo
				$ dd if=/dev/zero bs=1k count=1k > anotherlarge 2> /dev/null
				$ hg add --lfsize=1 anotherlarge
				$ hg commit -m "add anotherlarge (should be a largefile)"
				$ cat .hglf/anotherlarge
				3b71f43ff30f4b15b5cd85dd9e95ebc7e84eb5a3
				$ hg tag mytag
				$ cd ..

				round-trip: converting back to a normal (non-largefiles) repo with
				"lfconvert --to-normal" should give the same as ../bigfile-repo. The
				convert extension is disabled to show config items can be loaded without it.
				$ cd largefiles-repo
				$ hg --config extensions.convert=! lfconvert --to-normal . ../normal-repo
				initializing destination ../normal-repo
				0 additional largefiles cached
				scanning source...
				sorting...
				converting...
				7 add large, normal1
				6 add sub/*
				5 rename sub/ to stuff/
				4 add normal3, modify sub/*
				3 remove large, normal3
				2 merge
				1 add anotherlarge (should be a largefile)
				0 Added tag mytag for changeset abacddda7028
				$ cd ../normal-repo
				$ cat >> .hg/hgrc <<EOF
				> [extensions]
				> largefiles = !
				> EOF

				$ hg log -G --template "{rev}:{node\|short} {desc\|firstline}\n"
				o 7:b5fedc110b9d Added tag mytag for changeset 867ab992ecf4
				\|
				o 6:867ab992ecf4 add anotherlarge (should be a largefile)
				\|
				o 5:4884f215abda merge
				\|\
				\| o 4:7285f817b77e remove large, normal3
				\| \|
				\| o 3:67e3892e3534 add normal3, modify sub/*
				\| \|
				o \| 2:c96c8beb5d56 rename sub/ to stuff/
				\|/
				o 1:020c65d24e11 add sub/*
				\|
				o 0:117b8328f97a add large, normal1

				$ hg update
				5 files updated, 0 files merged, 0 files removed, 0 files unresolved
				$ hg locate
				.hgtags
				anotherlarge
				normal1
				stuff/maybelarge.dat
				stuff/normal2
				$ [ -d .hg/largefiles ] && echo fail \|\| echo pass
				pass

				$ cd ..

				Clearing the usercache ensures that commitctx doesn't try to cache largefiles
				from the working dir on a convert.
				$ rm "${USERCACHE}"/*
				$ hg convert largefiles-repo
				assuming destination largefiles-repo-hg
				initializing destination largefiles-repo-hg repository
				scanning source...
				sorting...
				converting...
				7 add large, normal1
				6 add sub/*
				5 rename sub/ to stuff/
				4 add normal3, modify sub/*
				3 remove large, normal3
				2 merge
				1 add anotherlarge (should be a largefile)
				0 Added tag mytag for changeset abacddda7028

				$ hg -R largefiles-repo-hg log -G --template "{rev}:{node\|short} {desc\|firstline}\n"
				o 7:2f08f66459b7 Added tag mytag for changeset 17126745edfd
				\|
				o 6:17126745edfd add anotherlarge (should be a largefile)
				\|
				o 5:9cc5aa7204f0 merge
				\|\
				\| o 4:a5a02de7a8e4 remove large, normal3
				\| \|
				\| o 3:55759520c76f add normal3, modify sub/*
				\| \|
				o \| 2:261ad3f3f037 rename sub/ to stuff/
				\|/
				o 1:334e5237836d add sub/*
				\|
				o 0:d4892ec57ce2 add large, normal1

				Verify will fail (for now) if the usercache is purged before converting, since
				largefiles are not cached in the converted repo's local store by the conversion
				process.
				$ cd largefiles-repo-hg
				$ cat >> .hg/hgrc <<EOF
				> [experimental]
				> evolution.createmarkers=True
				> EOF
				$ hg debugobsolete `hg log -r tip -T "{node}"`
				obsoleted 1 changesets
				$ cd ..

				$ hg -R largefiles-repo-hg verify --large --lfa
				checking changesets
				checking manifests
				crosschecking files in changesets and manifests
				checking files
				checked 8 changesets with 13 changes to 9 files
				searching 7 changesets for largefiles
				changeset 0:d4892ec57ce2: large references missing $TESTTMP/largefiles-repo-hg/.hg/largefiles/2e000fa7e85759c7f4c254d4d9c33ef481e459a7
				changeset 1:334e5237836d: sub/maybelarge.dat references missing $TESTTMP/largefiles-repo-hg/.hg/largefiles/34e163be8e43c5631d8b92e9c43ab0bf0fa62b9c
				changeset 2:261ad3f3f037: stuff/maybelarge.dat references missing $TESTTMP/largefiles-repo-hg/.hg/largefiles/34e163be8e43c5631d8b92e9c43ab0bf0fa62b9c
				changeset 3:55759520c76f: sub/maybelarge.dat references missing $TESTTMP/largefiles-repo-hg/.hg/largefiles/76236b6a2c6102826c61af4297dd738fb3b1de38
				changeset 5:9cc5aa7204f0: stuff/maybelarge.dat references missing $TESTTMP/largefiles-repo-hg/.hg/largefiles/76236b6a2c6102826c61af4297dd738fb3b1de38
				changeset 6:17126745edfd: anotherlarge references missing $TESTTMP/largefiles-repo-hg/.hg/largefiles/3b71f43ff30f4b15b5cd85dd9e95ebc7e84eb5a3
				verified existence of 6 revisions of 4 largefiles
				[1]
				$ hg -R largefiles-repo-hg showconfig paths
				[1]


				Avoid a traceback if a largefile isn't available (issue3519)

				Ensure the largefile can be cached in the source if necessary
				$ hg clone -U largefiles-repo issue3519
				$ rm -f "${USERCACHE}"/*
				$ hg -R issue3519 branch -q mybranch
				$ hg -R issue3519 ci -m 'change branch name only'
				$ hg lfconvert --to-normal issue3519 normalized3519
				initializing destination normalized3519
				4 additional largefiles cached
				scanning source...
				sorting...
				converting...
				8 add large, normal1
				7 add sub/*
				6 rename sub/ to stuff/
				5 add normal3, modify sub/*
				4 remove large, normal3
				3 merge
				2 add anotherlarge (should be a largefile)
				1 Added tag mytag for changeset abacddda7028
				0 change branch name only

				Ensure empty commits aren't lost in the conversion
				$ hg -R normalized3519 log -r tip -T '{desc}\n'
				change branch name only

				Ensure the abort message is useful if a largefile is entirely unavailable
				$ rm -rf normalized3519
				$ rm "${USERCACHE}"/*
				$ rm issue3519/.hg/largefiles/*
				$ rm largefiles-repo/.hg/largefiles/*
				$ hg lfconvert --to-normal issue3519 normalized3519
				initializing destination normalized3519
				anotherlarge: largefile 3b71f43ff30f4b15b5cd85dd9e95ebc7e84eb5a3 not available from file:/*/$TESTTMP/largefiles-repo (glob)
				stuff/maybelarge.dat: largefile 76236b6a2c6102826c61af4297dd738fb3b1de38 not available from file:/*/$TESTTMP/largefiles-repo (glob)
				stuff/maybelarge.dat: largefile 76236b6a2c6102826c61af4297dd738fb3b1de38 not available from file:/*/$TESTTMP/largefiles-repo (glob)
				sub/maybelarge.dat: largefile 76236b6a2c6102826c61af4297dd738fb3b1de38 not available from file:/*/$TESTTMP/largefiles-repo (glob)
				large: largefile 2e000fa7e85759c7f4c254d4d9c33ef481e459a7 not available from file:/*/$TESTTMP/largefiles-repo (glob)
				sub/maybelarge.dat: largefile 76236b6a2c6102826c61af4297dd738fb3b1de38 not available from file:/*/$TESTTMP/largefiles-repo (glob)
				large: largefile 2e000fa7e85759c7f4c254d4d9c33ef481e459a7 not available from file:/*/$TESTTMP/largefiles-repo (glob)
				stuff/maybelarge.dat: largefile 34e163be8e43c5631d8b92e9c43ab0bf0fa62b9c not available from file:/*/$TESTTMP/largefiles-repo (glob)
				large: largefile 2e000fa7e85759c7f4c254d4d9c33ef481e459a7 not available from file:/*/$TESTTMP/largefiles-repo (glob)
				sub/maybelarge.dat: largefile 34e163be8e43c5631d8b92e9c43ab0bf0fa62b9c not available from file:/*/$TESTTMP/largefiles-repo (glob)
				large: largefile 2e000fa7e85759c7f4c254d4d9c33ef481e459a7 not available from file:/*/$TESTTMP/largefiles-repo (glob)
				0 additional largefiles cached
				11 largefiles failed to download
				abort: all largefiles must be present locally
				[255]