diff tests/test-touch.t @ 5978:bf48247af25a stable

tests: demonstrate that touch can lose files (issue6416)

This commit also includes a test of how copies are handled in the
touched merge commit.

--- a/tests/test-touch.t	Tue Jul 13 16:19:29 2021 -0400
+++ b/tests/test-touch.t	Mon Oct 05 09:02:21 2020 -0700
@@ -212,6 +212,115 @@
 
   $ cd ..
 
+Check that touching a merge commit doesn't lose file changes (issue 6416)
+
+  $ hg init issue-6416
+  $ cd issue-6416
+  $ echo base > base
+  $ hg ci -Aqm base
+  $ echo left1 > left1
+  $ hg ci -Aqm left1
+  $ echo left2 > left2
+  $ hg ci -Aqm left2
+  $ hg up 0 -q
+  $ echo right1 > right1
+  $ hg ci -Aqm right1
+  $ echo right2 > right2
+  $ hg ci -Aqm right2
+  $ hg up 2 -q
+  $ hg merge 4 -q
+  $ hg ci -m merge
+  $ hg touch tip
+  $ hg glog --hidden
+  @    6: merge
+  |\
+  +---x  5: merge
+  | |/
+  | o  4: right2
+  | |
+  | o  3: right1
+  | |
+  o |  2: left2
+  | |
+  o |  1: left1
+  |/
+  o  0: base
+  
+  $ hg glog --hidden --rev 'min(desc("merge"))' --rev 'max(desc("merge"))'
+  @    6: merge
+  |\
+  ~ ~
+  x    5: merge
+  |\
+  ~ ~
+  $ hg status --hidden --change 'min(desc("merge"))'
+  A right1
+  A right2
+BROKEN: should be the same as "5"
+  $ hg status --hidden --change 'max(desc("merge"))'
+  A right2
+BROKEN: There should be no difference
+  $ hg status --hidden --rev 'min(desc("merge"))' --rev 'max(desc("merge"))'
+  R right1
+  $ cd ..
+
+Check that touching a merge commit doesn't lose copies
+
+  $ hg init merge-copies
+  $ cd merge-copies
+  $ echo base > base
+  $ hg ci -Aqm base
+  $ echo left > left
+  $ hg cp base copy-on-left
+  $ hg ci -Aqm left
+  $ hg up 0 -q
+  $ echo right > right
+  $ hg cp base copy-on-right
+  $ hg ci -Aqm right
+  $ hg up 1 -q
+  $ hg merge 2 -q
+  $ hg cp left merge-copy-left
+  $ hg cp right merge-copy-right
+  $ hg ci -m merge
+  $ hg touch tip
+  $ hg glog --hidden
+  @    4: merge
+  |\
+  +---x  3: merge
+  | |/
+  | o  2: right
+  | |
+  o |  1: left
+  |/
+  o  0: base
+  
+  $ hg glog --hidden --rev 'min(desc("merge"))' --rev 'max(desc("merge"))'
+  @    4: merge
+  |\
+  ~ ~
+  x    3: merge
+  |\
+  ~ ~
+  $ hg debugpathcopies 'min(desc("base"))' 'min(desc("merge"))'
+  base -> copy-on-left
+  base -> copy-on-right
+  $ hg debugpathcopies 'min(desc("base"))' 'max(desc("merge"))'
+  base -> copy-on-left
+  base -> copy-on-right
+  $ hg debugpathcopies 'min(desc("left"))' 'min(desc("merge"))'
+  base -> copy-on-right
+  left -> merge-copy-left
+  $ hg debugpathcopies 'min(desc("left"))' 'max(desc("merge"))'
+  base -> copy-on-right
+  left -> merge-copy-left
+  $ hg debugpathcopies 'min(desc("right"))' 'min(desc("merge"))'
+  base -> copy-on-left
+  right -> merge-copy-right (missing-correct-output !)
+  $ hg debugpathcopies 'min(desc("right"))' 'max(desc("merge"))'
+  base -> copy-on-left
+  right -> merge-copy-right (missing-correct-output !)
+  $ cd ..
+
 Make sure touch doesn't fail to warn about divergence (issue6107)
 
   $ hg init touchdiv