===============================

Test the "tracked hint" feature

===============================

The tracked hint feature provide a file that get updated when the set of tracked

files get updated.

basic setup

  $ cat << EOF >> $HGRCPATH

  > [format]

  > use-dirstate-tracked-hint=yes

  > EOF

  $ hg init tracked-hint-test

  $ cd tracked-hint-test

  $ hg debugbuilddag '.+10' -n

  $ hg log -G -T '{rev} {desc} {files}\n'

  o  10 r10 nf10

  |

  o  9 r9 nf9

  |

  o  8 r8 nf8

  |

  o  7 r7 nf7

  |

  o  6 r6 nf6

  |

  o  5 r5 nf5

  |

  o  4 r4 nf4

  |

  o  3 r3 nf3

  |

  o  2 r2 nf2

  |

  o  1 r1 nf1

  |

  o  0 r0 nf0

  $ hg up tip

  11 files updated, 0 files merged, 0 files removed, 0 files unresolved

  $ hg files

  nf0

  nf1

  nf10

  nf2

  nf3

  nf4

  nf5

  nf6

  nf7

  nf8

  nf9

key-file exists

-----------

The tracked hint file should exist

  $ ls -1 .hg/dirstate*

  .hg/dirstate

  .hg/dirstate-tracked-hint

key-file stay the same if the tracked set is unchanged

------------------------------------------------------

(copy its content for later comparison)

  $ cp .hg/dirstate-tracked-hint ../key-bck

  $ echo foo >> nf0

  $ sleep 1

  $ hg status

  M nf0

  $ diff --brief .hg/dirstate-tracked-hint ../key-bck

  $ hg revert -C nf0

  $ sleep 1

  $ hg status

  $ diff --brief .hg/dirstate-tracked-hint ../key-bck

key-file change if the tracked set is changed manually

------------------------------------------------------

adding a file to tracking

  $ cp .hg/dirstate-tracked-hint ../key-bck

  $ echo x > x

  $ hg add x

  $ diff --brief .hg/dirstate-tracked-hint ../key-bck

  Files .hg/dirstate-tracked-hint and ../key-bck differ

  [1]

remove a file from tracking

(forget)

  $ cp .hg/dirstate-tracked-hint ../key-bck

  $ hg forget x

  $ diff --brief .hg/dirstate-tracked-hint ../key-bck

  Files .hg/dirstate-tracked-hint and ../key-bck differ

  [1]

(remove)

  $ cp .hg/dirstate-tracked-hint ../key-bck

  $ hg remove nf1

  $ diff --brief .hg/dirstate-tracked-hint ../key-bck

  Files .hg/dirstate-tracked-hint and ../key-bck differ

  [1]

key-file changes on revert (when applicable)

--------------------------------------------

  $ cp .hg/dirstate-tracked-hint ../key-bck

  $ hg status

  R nf1

  ? x

  $ hg revert --all

  undeleting nf1

  $ hg status

  ? x

  $ diff --brief .hg/dirstate-tracked-hint ../key-bck

  Files .hg/dirstate-tracked-hint and ../key-bck differ

  [1]

`hg update` does affect the key-file (when needed)

--------------------------------------------------

update changing the tracked set

(removing)

  $ cp .hg/dirstate-tracked-hint ../key-bck

  $ hg status --rev . --rev '.#generations[-1]'

  R nf10

  $ hg up '.#generations[-1]'

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

  $ diff --brief .hg/dirstate-tracked-hint ../key-bck

  Files .hg/dirstate-tracked-hint and ../key-bck differ

  [1]

(adding)

  $ cp .hg/dirstate-tracked-hint ../key-bck

  $ hg status --rev . --rev '.#generations[1]'

  A nf10

  $ hg up '.#generations[1]'

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

  $ diff --brief .hg/dirstate-tracked-hint ../key-bck

  Files .hg/dirstate-tracked-hint and ../key-bck differ

  [1]

update not affecting the tracked set

  $ echo foo >> nf0

  $ hg commit -m foo

  $ cp .hg/dirstate-tracked-hint ../key-bck

  $ hg status --rev . --rev '.#generations[-1]'

  M nf0

  $ hg up '.#generations[-1]'

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

  $ diff --brief .hg/dirstate-tracked-hint ../key-bck

Test upgrade and downgrade

==========================

  $ test -f .hg/dirstate-tracked-hint

  $ hg debugrequires | grep 'tracked'

  dirstate-tracked-key-v1

downgrade

  $ hg debugupgraderepo --config format.use-dirstate-tracked-hint=no --run --quiet

  upgrade will perform the following actions:

  requirements

     preserved: * (glob)

     removed: dirstate-tracked-key-v1

  no revlogs to process

  $ test -f .hg/dirstate-tracked-hint

  [1]

  $ hg debugrequires | grep 'tracked'

  [1]

upgrade

  $ hg debugupgraderepo --config format.use-dirstate-tracked-hint=yes --run --quiet

  upgrade will perform the following actions:

  requirements

     preserved: * (glob)

     added: dirstate-tracked-key-v1

  no revlogs to process

  $ test -f .hg/dirstate-tracked-hint

  $ hg debugrequires | grep 'tracked'

  dirstate-tracked-key-v1

  $ cd ..

Test automatic upgrade and downgrade

------------------------------------

create an initial repository

  $ hg init auto-upgrade \

  > --config format.use-dirstate-tracked-hint=no

  $ hg debugbuilddag -R auto-upgrade --new-file .+5

  $ hg -R auto-upgrade update

  6 files updated, 0 files merged, 0 files removed, 0 files unresolved

  $ hg debugformat -R auto-upgrade | grep tracked

  tracked-hint:        no

upgrade it to dirstate-tracked-hint automatically

  $ hg status -R auto-upgrade \

  > --config format.use-dirstate-tracked-hint.automatic-upgrade-of-mismatching-repositories=yes \

  > --config format.use-dirstate-tracked-hint=yes

  automatically upgrading repository to the `tracked-hint` feature

  (see `hg help config.format.use-dirstate-tracked-hint` for details)

  $ hg debugformat -R auto-upgrade | grep tracked

  tracked-hint:       yes

rhg supports this feature

  $ hg status -R auto-upgrade \

  > --config format.use-dirstate-tracked-hint=yes --config rhg.on-unsupported=abort

downgrade it from dirstate-tracked-hint automatically

  $ hg status -R auto-upgrade \

  > --config format.use-dirstate-tracked-hint.automatic-upgrade-of-mismatching-repositories=yes \

  > --config format.use-dirstate-tracked-hint=no

  automatically downgrading repository from the `tracked-hint` feature

  (see `hg help config.format.use-dirstate-tracked-hint` for details)

  $ hg debugformat -R auto-upgrade | grep tracked

  tracked-hint:        no