tests/test-issue3084.t

largefiles: systematic testing of merges to/from largefiles

427ce5633c1c fixed one problem with update and added a test case for it. The
test coverage was thus insufficient before that.

To make sure we have good test coverage in this area we add systematic testing
of all cases of merges that may or may not change normal files to largefiles or
vice versa.

The tests shows some annoying extra merge prompts in some cases, but these
prompts are hard to avoid and they are now "safe" - they do not leave the
system in a confused inconsistent state.

  $ echo "[extensions]" >> $HGRCPATH
  $ echo "largefiles =" >> $HGRCPATH

Create the repository outside $HOME since largefiles write to
$HOME/.cache/largefiles.

  $ hg init test
  $ cd test
  $ echo "root" > root
  $ hg add root
  $ hg commit -m "Root commit"

  $ echo "large" > foo
  $ hg add --large foo
  $ hg commit -m "Add foo as a largefile"

  $ hg update -r 0
  getting changed largefiles
  0 largefiles updated, 1 removed
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved

  $ echo "normal" > foo
  $ hg add foo
  $ hg commit -m "Add foo as normal file"
  created new head

Normal file in the working copy, keeping the normal version:

  $ echo "n" | hg merge --config ui.interactive=Yes
  foo has been turned into a largefile
  use (l)argefile or keep as (n)ormal file? 0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
  getting changed largefiles
  0 largefiles updated, 0 removed

  $ hg status
  $ cat foo
  normal

Normal file in the working copy, keeping the largefile version:

  $ hg update -q -C
  $ echo "l" | hg merge --config ui.interactive=Yes
  foo has been turned into a largefile
  use (l)argefile or keep as (n)ormal file? 1 files updated, 0 files merged, 1 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
  getting changed largefiles
  1 largefiles updated, 0 removed

  $ hg status
  M foo

  $ hg diff --nodates
  diff -r fa129ab6b5a7 .hglf/foo
  --- /dev/null
  +++ b/.hglf/foo
  @@ -0,0 +1,1 @@
  +7f7097b041ccf68cc5561e9600da4655d21c6d18
  diff -r fa129ab6b5a7 foo
  --- a/foo
  +++ /dev/null
  @@ -1,1 +0,0 @@
  -normal

  $ cat foo
  large

Largefile in the working copy, keeping the normal version:

  $ hg update -q -C -r 1
  $ echo "n" | hg merge --config ui.interactive=Yes
  foo has been turned into a normal file
  keep as (l)argefile or use (n)ormal file? 1 files updated, 0 files merged, 1 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
  getting changed largefiles
  0 largefiles updated, 0 removed

  $ hg status
  M foo

  $ hg diff --nodates
  diff -r ff521236428a .hglf/foo
  --- a/.hglf/foo
  +++ /dev/null
  @@ -1,1 +0,0 @@
  -7f7097b041ccf68cc5561e9600da4655d21c6d18
  diff -r ff521236428a foo
  --- /dev/null
  +++ b/foo
  @@ -0,0 +1,1 @@
  +normal

  $ cat foo
  normal

Largefile in the working copy, keeping the largefile version:

  $ hg update -q -C -r 1
  $ echo "l" | hg merge --config ui.interactive=Yes
  foo has been turned into a normal file
  keep as (l)argefile or use (n)ormal file? 0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
  getting changed largefiles
  1 largefiles updated, 0 removed

  $ hg status

  $ cat foo
  large

Whatever ... commit something so we can invoke merge when updating

  $ hg commit -m '3: Merge'

Updating from largefile to normal - no reason to prompt

  $ hg up -r 2
  getting changed largefiles
  0 largefiles updated, 0 removed
  1 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ cat foo
  normal

(the update above used to leave the working dir in a very weird state - clean it
  $ hg up -qr null
  $ hg up -qr 2
)

Updating from normal to largefile - no reason to prompt

  $ hg up -r 3
  getting changed largefiles
  1 largefiles updated, 0 removed
  1 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ cat foo
  large

  $ cd ..


Systematic testing of merges involving largefiles:

Ancestor: normal  Parent: normal=  Parent: large   result: large
Ancestor: normal  Parent: normal2  Parent: large   result: ?
Ancestor: large   Parent: large=   Parent: normal  result: normal
Ancestor: large   Parent: large2   Parent: normal  result: ?

All cases should try merging both ways.
"=" means same file content.

Prepare test repo:

  $ hg init merges
  $ cd merges
  $ touch f1
  $ hg ci -Aqm "0-root"

ancestor is "normal":
  $ echo normal > f
  $ hg ci -Aqm "1-normal-ancestor"
  $ touch f2
  $ hg ci -Aqm "2-normal-unchanged"
  $ hg tag -l "normal="
  $ echo normal2 > f
  $ hg ci -m "3-normal2"
  $ hg tag -l "normal2"
  $ hg up -qr 1
  $ hg rm f
  $ echo large > f
  $ hg add --large f
  $ hg ci -qm "4-normal-to-large"
  $ hg tag -l "large"

  $ hg up -qr null

ancestor is "large":
  $ echo large > f
  $ hg add --large f
  $ hg ci -qm "5-large-ancestor"
  $ touch f2
  $ hg ci -Aqm "6-large-unchanged"
  $ hg tag -l "large="
  $ echo large2 > f
  $ hg ci -m "7-large2"
  $ hg tag -l "large2"
  $ hg up -qr 5
  $ hg rm f
  $ echo normal > f
  $ hg ci -qAm "8-large-to-normal"
  $ hg tag -l "normal"

Ancestor: normal  Parent: normal=  Parent: large   result: large

  $ hg up -Cqr normal=
  $ hg merge -r large
  1 files updated, 0 files merged, 1 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
  getting changed largefiles
  1 largefiles updated, 0 removed
  $ cat f
  large

swap

  $ hg up -Cqr large
  $ hg merge -r normal=
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
  getting changed largefiles
  0 largefiles updated, 0 removed
  $ cat f
  large

Ancestor: normal  Parent: normal2  Parent: large   result: ?
(annoying extra prompt ... but it do not do any serious harm)

  $ hg up -Cqr normal2
  $ hg merge -r large
  local changed f which remote deleted
  use (c)hanged version or (d)elete? c
  f has been turned into a largefile
  use (l)argefile or keep as (n)ormal file? l
  1 files updated, 0 files merged, 1 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
  getting changed largefiles
  1 largefiles updated, 0 removed
  $ cat f
  large

  $ hg up -Cqr normal2
  $ ( echo c; echo n ) | hg merge -r large --config ui.interactive=Yes
  local changed f which remote deleted
  use (c)hanged version or (d)elete? f has been turned into a largefile
  use (l)argefile or keep as (n)ormal file? 0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
  getting changed largefiles
  0 largefiles updated, 0 removed
  $ cat f
  normal2

  $ hg up -Cqr normal2
  $ echo d | hg merge -r large --config ui.interactive=Yes
  local changed f which remote deleted
  use (c)hanged version or (d)elete? 1 files updated, 0 files merged, 1 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
  getting changed largefiles
  1 largefiles updated, 0 removed
  $ cat f
  large

swap

  $ hg up -Cqr large
  $ hg merge -r normal2
  remote changed f which local deleted
  use (c)hanged version or leave (d)eleted? c
  f has been turned into a normal file
  keep as (l)argefile or use (n)ormal file? l
  1 files updated, 0 files merged, 1 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
  getting changed largefiles
  1 largefiles updated, 0 removed
  $ cat f
  large

  $ hg up -Cqr large
  $ ( echo c; echo n ) | hg merge -r normal2 --config ui.interactive=Yes
  remote changed f which local deleted
  use (c)hanged version or leave (d)eleted? f has been turned into a normal file
  keep as (l)argefile or use (n)ormal file? 2 files updated, 0 files merged, 1 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
  getting changed largefiles
  0 largefiles updated, 0 removed
  $ cat f
  normal2

  $ hg up -Cqr large
  $ echo d | hg merge -r normal2 --config ui.interactive=Yes
  remote changed f which local deleted
  use (c)hanged version or leave (d)eleted? 1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
  getting changed largefiles
  0 largefiles updated, 0 removed
  $ cat f
  large

Ancestor: large   Parent: large=   Parent: normal  result: normal

  $ hg up -Cqr large=
  $ hg merge -r normal
  1 files updated, 0 files merged, 1 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
  getting changed largefiles
  0 largefiles updated, 0 removed
  $ cat f
  normal

swap

  $ hg up -Cqr normal
  $ hg merge -r large=
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
  $ cat f
  normal

Ancestor: large   Parent: large2   Parent: normal  result: ?
(annoying extra prompt ... but it do not do any serious harm)

  $ hg up -Cqr large2
  $ hg merge -r normal
  local changed .hglf/f which remote deleted
  use (c)hanged version or (d)elete? c
  f has been turned into a normal file
  keep as (l)argefile or use (n)ormal file? l
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
  getting changed largefiles
  1 largefiles updated, 0 removed
  $ cat f
  large2

  $ hg up -Cqr large2
  $ echo d | hg merge -r normal --config ui.interactive=Yes
  local changed .hglf/f which remote deleted
  use (c)hanged version or (d)elete? 1 files updated, 0 files merged, 1 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
  getting changed largefiles
  0 largefiles updated, 0 removed
  $ cat f
  normal

swap

  $ hg up -Cqr normal
  $ hg merge -r large2
  remote changed .hglf/f which local deleted
  use (c)hanged version or leave (d)eleted? c
  f has been turned into a largefile
  use (l)argefile or keep as (n)ormal file? l
  2 files updated, 0 files merged, 1 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
  getting changed largefiles
  1 largefiles updated, 0 removed
  $ cat f
  large2

  $ hg up -Cqr normal
  $ echo d | hg merge -r large2 --config ui.interactive=Yes
  remote changed .hglf/f which local deleted
  use (c)hanged version or leave (d)eleted? 1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
  $ cat f
  normal

  $ cd ..