tests/test-generaldelta.t

tests: disable revlog compression in test-generaldelta.t (issue6867)

The revlog compression makes a lot of numbers unstable. Since checking revlog
compression is not the goal of this test, we disable the compression to get
stable numbers.

This should avoid wasting more time on this kind of changes in the future.

#require no-reposimplestore

Check whether size of generaldelta revlog is not bigger than its
regular equivalent. Test would fail if generaldelta was naive
implementation of parentdelta: third manifest revision would be fully
inserted due to big distance from its paren revision (zero).

(We disable the revlog compression to avoid the annoying instability in the chunk size that depends on the compressors implementation)

  $ cat << EOF >> $HGRCPATH
  > [format]
  > sparse-revlog = no
  > revlog-compression = none
  > EOF

  $ hg init repo --config format.generaldelta=no --config format.usegeneraldelta=no
  $ cd repo
  $ echo foo > foo
  $ echo bar > bar
  $ echo baz > baz
  $ hg commit -q -Am boo
  $ hg clone --pull . ../gdrepo -q --config format.generaldelta=yes
  $ for r in 1 2 3; do
  >   echo $r > foo
  >   hg commit -q -m $r
  >   hg up -q -r 0
  >   hg pull . -q -r $r -R ../gdrepo
  > done

  $ cd ..
  >>> import os
  >>> regsize = os.stat("repo/.hg/store/00manifest.i").st_size
  >>> gdsize = os.stat("gdrepo/.hg/store/00manifest.i").st_size
  >>> if regsize < gdsize:
  ...     print('generaldata increased size of manifest')

Verify rev reordering doesnt create invalid bundles (issue4462)
This requires a commit tree that when pulled will reorder manifest revs such
that the second manifest to create a file rev will be ordered before the first
manifest to create that file rev. We also need to do a partial pull to ensure
reordering happens. At the end we verify the linkrev points at the earliest
commit.

  $ hg init server --config format.generaldelta=True
  $ cd server
  $ touch a
  $ hg commit -Aqm a
  $ echo x > x
  $ echo y > y
  $ hg commit -Aqm xy
  $ hg up -q '.^'
  $ echo x > x
  $ echo z > z
  $ hg commit -Aqm xz
  $ hg up -q 1
  $ echo b > b
  $ hg commit -Aqm b
  $ hg merge -q 2
  $ hg commit -Aqm merge
  $ echo c > c
  $ hg commit -Aqm c
  $ hg log -G -T '{rev} {shortest(node)} {desc}'
  @  5 ebb8 c
  |
  o    4 baf7 merge
  |\
  | o  3 a129 b
  | |
  o |  2 958c xz
  | |
  | o  1 f00c xy
  |/
  o  0 3903 a
  
  $ cd ..
  $ hg init client --config format.generaldelta=false --config format.usegeneraldelta=false
  $ cd client
  $ hg pull -q ../server -r 4
  $ hg debugdeltachain x
      rev      p1      p2  chain# chainlen     prev   delta
        0      -1      -1       1        1       -1    base

  $ cd ..

Test "usegeneraldelta" config
(repo are general delta, but incoming bundle are not re-deltafied)

delta coming from the server base delta server are not recompressed.
(also include the aggressive version for comparison)

  $ hg clone repo --pull --config format.usegeneraldelta=1 usegd
  requesting all changes
  adding changesets
  adding manifests
  adding file changes
  added 4 changesets with 6 changes to 3 files (+2 heads)
  new changesets 0ea3fcf9d01d:bba78d330d9c
  updating to branch default
  3 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg clone repo --pull --config format.generaldelta=1 full
  requesting all changes
  adding changesets
  adding manifests
  adding file changes
  added 4 changesets with 6 changes to 3 files (+2 heads)
  new changesets 0ea3fcf9d01d:bba78d330d9c
  updating to branch default
  3 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg -R repo debugdeltachain -m
      rev      p1      p2  chain# chainlen     prev   delta
        0      -1      -1       1        1       -1    base
        1       0      -1       1        2        0    prev
        2       0      -1       1        3        1    prev
        3       0      -1       2        1       -1    base
  $ hg -R usegd debugdeltachain -m
      rev      p1      p2  chain# chainlen     prev   delta
        0      -1      -1       1        1       -1    base
        1       0      -1       1        2        0      p1
        2       0      -1       1        3        1    prev
        3       0      -1       1        2        0      p1
  $ hg -R full debugdeltachain -m
      rev      p1      p2  chain# chainlen     prev   delta
        0      -1      -1       1        1       -1    base
        1       0      -1       1        2        0      p1
        2       0      -1       1        2        0      p1
        3       0      -1       1        2        0      p1

Test revlog.optimize-delta-parent-choice

  $ hg init --config format.generaldelta=1 aggressive
  $ cd aggressive
  $ cat << EOF >> .hg/hgrc
  > [format]
  > generaldelta = 1
  > EOF
  $ touch a b c d e
  $ hg commit -Aqm side1
  $ hg up -q null
  $ touch x y
  $ hg commit -Aqm side2

- Verify non-aggressive merge uses p1 (commit 1) as delta parent
  $ hg merge -q 0
  $ hg commit -q -m merge --config storage.revlog.optimize-delta-parent-choice=no
  $ hg debugdeltachain -m
      rev      p1      p2  chain# chainlen     prev   delta
        0      -1      -1       1        1       -1    base
        1      -1      -1       2        1       -1    base
        2       1       0       2        2        1      p1

  $ hg strip -q -r . --config extensions.strip=

- Verify aggressive merge uses p2 (commit 0) as delta parent
  $ hg up -q -C 1
  $ hg merge -q 0
  $ hg commit -q -m merge --config storage.revlog.optimize-delta-parent-choice=yes
  $ hg debugdeltachain -m
      rev      p1      p2  chain# chainlen     prev   delta
        0      -1      -1       1        1       -1    base
        1      -1      -1       2        1       -1    base
        2       1       0       1        2        0      p2

Test that strip bundle use bundle2
  $ hg --config extensions.strip= strip .
  0 files updated, 0 files merged, 5 files removed, 0 files unresolved
  saved backup bundle to $TESTTMP/aggressive/.hg/strip-backup/1c5d4dc9a8b8-6c68e60c-backup.hg
  $ hg debugbundle .hg/strip-backup/*
  Stream params: {Compression: BZ}
  changegroup -- {nbchanges: 1, version: 03} (mandatory: True)
      1c5d4dc9a8b8d6e1750966d343e94db665e7a1e9
  cache:rev-branch-cache -- {} (mandatory: False)
  phase-heads -- {} (mandatory: True)
      1c5d4dc9a8b8d6e1750966d343e94db665e7a1e9 draft

  $ cd ..

test maxdeltachainspan

  $ hg init source-repo
  $ cd source-repo
  $ hg debugbuilddag --new-file '.+5:brancha$.+11:branchb$.+30:branchc<brancha+2<branchb+2'
# add an empty revision somewhere
  $ hg up tip
  14 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg rm .
  removing nf10
  removing nf11
  removing nf12
  removing nf13
  removing nf14
  removing nf15
  removing nf16
  removing nf17
  removing nf51
  removing nf52
  removing nf6
  removing nf7
  removing nf8
  removing nf9
  $ hg commit -m 'empty all'
  $ hg revert --all --rev 'p1(.)'
  adding nf10
  adding nf11
  adding nf12
  adding nf13
  adding nf14
  adding nf15
  adding nf16
  adding nf17
  adding nf51
  adding nf52
  adding nf6
  adding nf7
  adding nf8
  adding nf9
  $ hg commit -m 'restore all'
  $ hg up null
  0 files updated, 0 files merged, 14 files removed, 0 files unresolved
  $ 
  $ cd ..
  $ hg -R source-repo debugdeltachain -m --all-info
      rev      p1      p2  chain# chainlen     prev   delta       size    rawsize  chainsize     ratio   lindist extradist extraratio
        0      -1      -1       1        1       -1    base         46         45         46   1.02222        46         0    0.00000
        1       0      -1       1        2        0      p1         57         90        103   1.14444       103         0    0.00000
        2       1      -1       1        3        1      p1         57        135        160   1.18519       160         0    0.00000
        3       2      -1       1        4        2      p1         57        180        217   1.20556       217         0    0.00000
        4       3      -1       1        5        3      p1         57        225        274   1.21778       274         0    0.00000
        5       4      -1       1        6        4      p1         57        270        331   1.22593       331         0    0.00000
        6      -1      -1       2        1       -1    base         46         45         46   1.02222        46         0    0.00000
        7       6      -1       2        2        6      p1         57         90        103   1.14444       103         0    0.00000
        8       7      -1       2        3        7      p1         57        135        160   1.18519       160         0    0.00000
        9       8      -1       2        4        8      p1         57        180        217   1.20556       217         0    0.00000
       10       9      -1       2        5        9      p1         58        226        275   1.21681       275         0    0.00000
       11      10      -1       2        6       10      p1         58        272        333   1.22426       333         0    0.00000
       12      11      -1       2        7       11      p1         58        318        391   1.22956       391         0    0.00000
       13      12      -1       2        8       12      p1         58        364        449   1.23352       449         0    0.00000
       14      13      -1       2        9       13      p1         58        410        507   1.23659       507         0    0.00000
       15      14      -1       2       10       14      p1         58        456        565   1.23904       565         0    0.00000
       16      15      -1       2       11       15      p1         58        502        623   1.24104       623         0    0.00000
       17      16      -1       2       12       16      p1         58        548        681   1.24270       681         0    0.00000
       18      -1      -1       3        1       -1    base         47         46         47   1.02174        47         0    0.00000
       19      18      -1       3        2       18      p1         58         92        105   1.14130       105         0    0.00000
       20      19      -1       3        3       19      p1         58        138        163   1.18116       163         0    0.00000
       21      20      -1       3        4       20      p1         58        184        221   1.20109       221         0    0.00000
       22      21      -1       3        5       21      p1         58        230        279   1.21304       279         0    0.00000
       23      22      -1       3        6       22      p1         58        276        337   1.22101       337         0    0.00000
       24      23      -1       3        7       23      p1         58        322        395   1.22671       395         0    0.00000
       25      24      -1       3        8       24      p1         58        368        453   1.23098       453         0    0.00000
       26      25      -1       3        9       25      p1         58        414        511   1.23430       511         0    0.00000
       27      26      -1       3       10       26      p1         58        460        569   1.23696       569         0    0.00000
       28      27      -1       3       11       27      p1         58        506        627   1.23913       627         0    0.00000
       29      28      -1       3       12       28      p1         58        552        685   1.24094       685         0    0.00000
       30      29      -1       3       13       29      p1         58        598        743   1.24247       743         0    0.00000
       31      30      -1       3       14       30      p1         58        644        801   1.24379       801         0    0.00000
       32      31      -1       3       15       31      p1         58        690        859   1.24493       859         0    0.00000
       33      32      -1       3       16       32      p1         58        736        917   1.24592       917         0    0.00000
       34      33      -1       3       17       33      p1         58        782        975   1.24680       975         0    0.00000
       35      34      -1       3       18       34      p1         58        828       1033   1.24758      1033         0    0.00000
       36      35      -1       3       19       35      p1         58        874       1091   1.24828      1091         0    0.00000
       37      36      -1       3       20       36      p1         58        920       1149   1.24891      1149         0    0.00000
       38      37      -1       3       21       37      p1         58        966       1207   1.24948      1207         0    0.00000
       39      38      -1       3       22       38      p1         58       1012       1265   1.25000      1265         0    0.00000
       40      39      -1       3       23       39      p1         58       1058       1323   1.25047      1323         0    0.00000
       41      40      -1       3       24       40      p1         58       1104       1381   1.25091      1381         0    0.00000
       42      41      -1       3       25       41      p1         58       1150       1439   1.25130      1439         0    0.00000
       43      42      -1       3       26       42      p1         58       1196       1497   1.25167      1497         0    0.00000
       44      43      -1       3       27       43      p1         58       1242       1555   1.25201      1555         0    0.00000
       45      44      -1       3       28       44      p1         58       1288       1613   1.25233      1613         0    0.00000
       46      45      -1       3       29       45      p1         58       1334       1671   1.25262      1671         0    0.00000
       47      46      -1       3       30       46      p1         58       1380       1729   1.25290      1729         0    0.00000
       48      47      -1       3       31       47      p1         58       1426       1787   1.25316      1787         0    0.00000
       49       5      -1       4        1       -1    base        317        316        317   1.00316       317         0    0.00000
       50      49      -1       4        2       49      p1         58        362        375   1.03591       375         0    0.00000
       51      17      -1       5        1       -1    base        595        594        595   1.00168       595         0    0.00000
       52      51      -1       5        2       51      p1         58        640        653   1.02031       653         0    0.00000
       53      52      -1       6        1       -1    base          0          0          0   0.00000         0         0    0.00000
       54      53      -1       7        1       -1    base        641        640        641   1.00156       641         0    0.00000
  $ hg clone --pull source-repo --config experimental.maxdeltachainspan=2900 relax-chain --config format.generaldelta=yes
  requesting all changes
  adding changesets
  adding manifests
  adding file changes
  added 55 changesets with 53 changes to 53 files (+2 heads)
  new changesets 61246295ee1e:c930ac4a5b32
  updating to branch default
  14 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg -R relax-chain debugdeltachain -m --all-info
      rev      p1      p2  chain# chainlen     prev   delta       size    rawsize  chainsize     ratio   lindist extradist extraratio
        0      -1      -1       1        1       -1    base         46         45         46   1.02222        46         0    0.00000
        1       0      -1       1        2        0      p1         57         90        103   1.14444       103         0    0.00000
        2       1      -1       1        3        1      p1         57        135        160   1.18519       160         0    0.00000
        3       2      -1       1        4        2      p1         57        180        217   1.20556       217         0    0.00000
        4       3      -1       1        5        3      p1         57        225        274   1.21778       274         0    0.00000
        5       4      -1       1        6        4      p1         57        270        331   1.22593       331         0    0.00000
        6      -1      -1       2        1       -1    base         46         45         46   1.02222        46         0    0.00000
        7       6      -1       2        2        6      p1         57         90        103   1.14444       103         0    0.00000
        8       7      -1       2        3        7      p1         57        135        160   1.18519       160         0    0.00000
        9       8      -1       2        4        8      p1         57        180        217   1.20556       217         0    0.00000
       10       9      -1       2        5        9      p1         58        226        275   1.21681       275         0    0.00000
       11      10      -1       2        6       10      p1         58        272        333   1.22426       333         0    0.00000
       12      11      -1       2        7       11      p1         58        318        391   1.22956       391         0    0.00000
       13      12      -1       2        8       12      p1         58        364        449   1.23352       449         0    0.00000
       14      13      -1       2        9       13      p1         58        410        507   1.23659       507         0    0.00000
       15      14      -1       2       10       14      p1         58        456        565   1.23904       565         0    0.00000
       16      15      -1       2       11       15      p1         58        502        623   1.24104       623         0    0.00000
       17      16      -1       2       12       16      p1         58        548        681   1.24270       681         0    0.00000
       18      -1      -1       3        1       -1    base         47         46         47   1.02174        47         0    0.00000
       19      18      -1       3        2       18      p1         58         92        105   1.14130       105         0    0.00000
       20      19      -1       3        3       19      p1         58        138        163   1.18116       163         0    0.00000
       21      20      -1       3        4       20      p1         58        184        221   1.20109       221         0    0.00000
       22      21      -1       3        5       21      p1         58        230        279   1.21304       279         0    0.00000
       23      22      -1       3        6       22      p1         58        276        337   1.22101       337         0    0.00000
       24      23      -1       3        7       23      p1         58        322        395   1.22671       395         0    0.00000
       25      24      -1       3        8       24      p1         58        368        453   1.23098       453         0    0.00000
       26      25      -1       3        9       25      p1         58        414        511   1.23430       511         0    0.00000
       27      26      -1       3       10       26      p1         58        460        569   1.23696       569         0    0.00000
       28      27      -1       3       11       27      p1         58        506        627   1.23913       627         0    0.00000
       29      28      -1       3       12       28      p1         58        552        685   1.24094       685         0    0.00000
       30      29      -1       3       13       29      p1         58        598        743   1.24247       743         0    0.00000
       31      30      -1       3       14       30      p1         58        644        801   1.24379       801         0    0.00000
       32      31      -1       3       15       31      p1         58        690        859   1.24493       859         0    0.00000
       33      32      -1       3       16       32      p1         58        736        917   1.24592       917         0    0.00000
       34      33      -1       3       17       33      p1         58        782        975   1.24680       975         0    0.00000
       35      34      -1       3       18       34      p1         58        828       1033   1.24758      1033         0    0.00000
       36      35      -1       3       19       35      p1         58        874       1091   1.24828      1091         0    0.00000
       37      36      -1       3       20       36      p1         58        920       1149   1.24891      1149         0    0.00000
       38      37      -1       3       21       37      p1         58        966       1207   1.24948      1207         0    0.00000
       39      38      -1       3       22       38      p1         58       1012       1265   1.25000      1265         0    0.00000
       40      39      -1       3       23       39      p1         58       1058       1323   1.25047      1323         0    0.00000
       41      40      -1       3       24       40      p1         58       1104       1381   1.25091      1381         0    0.00000
       42      41      -1       3       25       41      p1         58       1150       1439   1.25130      1439         0    0.00000
       43      42      -1       3       26       42      p1         58       1196       1497   1.25167      1497         0    0.00000
       44      43      -1       3       27       43      p1         58       1242       1555   1.25201      1555         0    0.00000
       45      44      -1       3       28       44      p1         58       1288       1613   1.25233      1613         0    0.00000
       46      45      -1       3       29       45      p1         58       1334       1671   1.25262      1671         0    0.00000
       47      46      -1       3       30       46      p1         58       1380       1729   1.25290      1729         0    0.00000
       48      47      -1       3       31       47      p1         58       1426       1787   1.25316      1787         0    0.00000
       49       5      -1       1        7        5      p1         58        316        389   1.23101      2857      2468    6.34447
       50      49      -1       4        1       -1    base        363        362        363   1.00276       363         0    0.00000
       51      17      -1       5        1       -1    base        595        594        595   1.00168       595         0    0.00000
       52      51      -1       5        2       51      p1         58        640        653   1.02031       653         0    0.00000
       53      52      -1       6        1       -1    base          0          0          0   0.00000         0         0    0.00000
       54      53      -1       7        1       -1    base        641        640        641   1.00156       641         0    0.00000
  $ hg clone --pull source-repo --config experimental.maxdeltachainspan=0 noconst-chain --config format.usegeneraldelta=yes --config storage.revlog.reuse-external-delta-parent=no
  requesting all changes
  adding changesets
  adding manifests
  adding file changes
  added 55 changesets with 53 changes to 53 files (+2 heads)
  new changesets 61246295ee1e:c930ac4a5b32
  updating to branch default
  14 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg -R noconst-chain debugdeltachain -m --all-info
      rev      p1      p2  chain# chainlen     prev   delta       size    rawsize  chainsize     ratio   lindist extradist extraratio
        0      -1      -1       1        1       -1    base         46         45         46   1.02222        46         0    0.00000
        1       0      -1       1        2        0      p1         57         90        103   1.14444       103         0    0.00000
        2       1      -1       1        3        1      p1         57        135        160   1.18519       160         0    0.00000
        3       2      -1       1        4        2      p1         57        180        217   1.20556       217         0    0.00000
        4       3      -1       1        5        3      p1         57        225        274   1.21778       274         0    0.00000
        5       4      -1       1        6        4      p1         57        270        331   1.22593       331         0    0.00000
        6      -1      -1       2        1       -1    base         46         45         46   1.02222        46         0    0.00000
        7       6      -1       2        2        6      p1         57         90        103   1.14444       103         0    0.00000
        8       7      -1       2        3        7      p1         57        135        160   1.18519       160         0    0.00000
        9       8      -1       2        4        8      p1         57        180        217   1.20556       217         0    0.00000
       10       9      -1       2        5        9      p1         58        226        275   1.21681       275         0    0.00000
       11      10      -1       2        6       10      p1         58        272        333   1.22426       333         0    0.00000
       12      11      -1       2        7       11      p1         58        318        391   1.22956       391         0    0.00000
       13      12      -1       2        8       12      p1         58        364        449   1.23352       449         0    0.00000
       14      13      -1       2        9       13      p1         58        410        507   1.23659       507         0    0.00000
       15      14      -1       2       10       14      p1         58        456        565   1.23904       565         0    0.00000
       16      15      -1       2       11       15      p1         58        502        623   1.24104       623         0    0.00000
       17      16      -1       2       12       16      p1         58        548        681   1.24270       681         0    0.00000
       18      -1      -1       3        1       -1    base         47         46         47   1.02174        47         0    0.00000
       19      18      -1       3        2       18      p1         58         92        105   1.14130       105         0    0.00000
       20      19      -1       3        3       19      p1         58        138        163   1.18116       163         0    0.00000
       21      20      -1       3        4       20      p1         58        184        221   1.20109       221         0    0.00000
       22      21      -1       3        5       21      p1         58        230        279   1.21304       279         0    0.00000
       23      22      -1       3        6       22      p1         58        276        337   1.22101       337         0    0.00000
       24      23      -1       3        7       23      p1         58        322        395   1.22671       395         0    0.00000
       25      24      -1       3        8       24      p1         58        368        453   1.23098       453         0    0.00000
       26      25      -1       3        9       25      p1         58        414        511   1.23430       511         0    0.00000
       27      26      -1       3       10       26      p1         58        460        569   1.23696       569         0    0.00000
       28      27      -1       3       11       27      p1         58        506        627   1.23913       627         0    0.00000
       29      28      -1       3       12       28      p1         58        552        685   1.24094       685         0    0.00000
       30      29      -1       3       13       29      p1         58        598        743   1.24247       743         0    0.00000
       31      30      -1       3       14       30      p1         58        644        801   1.24379       801         0    0.00000
       32      31      -1       3       15       31      p1         58        690        859   1.24493       859         0    0.00000
       33      32      -1       3       16       32      p1         58        736        917   1.24592       917         0    0.00000
       34      33      -1       3       17       33      p1         58        782        975   1.24680       975         0    0.00000
       35      34      -1       3       18       34      p1         58        828       1033   1.24758      1033         0    0.00000
       36      35      -1       3       19       35      p1         58        874       1091   1.24828      1091         0    0.00000
       37      36      -1       3       20       36      p1         58        920       1149   1.24891      1149         0    0.00000
       38      37      -1       3       21       37      p1         58        966       1207   1.24948      1207         0    0.00000
       39      38      -1       3       22       38      p1         58       1012       1265   1.25000      1265         0    0.00000
       40      39      -1       3       23       39      p1         58       1058       1323   1.25047      1323         0    0.00000
       41      40      -1       3       24       40      p1         58       1104       1381   1.25091      1381         0    0.00000
       42      41      -1       3       25       41      p1         58       1150       1439   1.25130      1439         0    0.00000
       43      42      -1       3       26       42      p1         58       1196       1497   1.25167      1497         0    0.00000
       44      43      -1       3       27       43      p1         58       1242       1555   1.25201      1555         0    0.00000
       45      44      -1       3       28       44      p1         58       1288       1613   1.25233      1613         0    0.00000
       46      45      -1       3       29       45      p1         58       1334       1671   1.25262      1671         0    0.00000
       47      46      -1       3       30       46      p1         58       1380       1729   1.25290      1729         0    0.00000
       48      47      -1       3       31       47      p1         58       1426       1787   1.25316      1787         0    0.00000
       49       5      -1       1        7        5      p1         58        316        389   1.23101      2857      2468    6.34447
       50      49      -1       1        8       49      p1         58        362        447   1.23481      2915      2468    5.52125
       51      17      -1       2       13       17      p1         58        594        739   1.24411      2642      1903    2.57510
       52      51      -1       2       14       51      p1         58        640        797   1.24531      2700      1903    2.38770
       53      52      -1       4        1       -1    base          0          0          0   0.00000         0         0    0.00000
       54      53      -1       5        1       -1    base        641        640        641   1.00156       641         0    0.00000