git: add test showing `hg commit -i` working on a git repo

Shows `hg commit -i` working on a git repo via the `git`
extension. Adds working directory changes to files `alpha` and
`beta`, then selects only `alpha` changes and commits them.

As of now this would fail for a filename that
includes uppercase characters due to the lack of case folding
support in the extension.

Differential Revision: https://phab.mercurial-scm.org/D9081

tests/test-git-interop.t

@@ -1,277 +1,358
 #require pygit2
 
 Setup:
   $ GIT_AUTHOR_NAME='test'; export GIT_AUTHOR_NAME
   > GIT_AUTHOR_EMAIL='[e-mail]'; export GIT_AUTHOR_EMAIL
   > GIT_AUTHOR_DATE="2007-01-01 00:00:00 +0000"; export GIT_AUTHOR_DATE
   > GIT_COMMITTER_NAME="$GIT_AUTHOR_NAME"; export GIT_COMMITTER_NAME
   > GIT_COMMITTER_EMAIL="$GIT_AUTHOR_EMAIL"; export GIT_COMMITTER_EMAIL
   > GIT_COMMITTER_DATE="$GIT_AUTHOR_DATE"; export GIT_COMMITTER_DATE
   > count=10
   > gitcommit() {
   >    GIT_AUTHOR_DATE="2007-01-01 00:00:$count +0000";
   >    GIT_COMMITTER_DATE="$GIT_AUTHOR_DATE"
   >    git commit "$@" >/dev/null 2>/dev/null || echo "git commit error"
   >    count=`expr $count + 1`
   >  }
 
 
 Test auto-loading extension works:
   $ mkdir nogit
   $ cd nogit
   $ mkdir .hg
   $ echo git >> .hg/requires
   $ hg status
   abort: repository specified git format in .hg/requires but has no .git directory
   [255]
   $ git init
   Initialized empty Git repository in $TESTTMP/nogit/.git/
 This status invocation shows some hg gunk because we didn't use
 `hg init --git`, which fixes up .git/info/exclude for us.
   $ hg status
   ? .hg/cache/git-commits.sqlite
   ? .hg/cache/git-commits.sqlite-shm
   ? .hg/cache/git-commits.sqlite-wal
   ? .hg/requires
   $ cd ..
 
 Now globally enable extension for the rest of the test:
   $ cat <<EOF >> $HGRCPATH
   > [extensions]
   > git=
   > [git]
   > log-index-cache-miss = yes
   > EOF
 
 Make a new repo with git:
   $ mkdir foo
   $ cd foo
   $ git init
   Initialized empty Git repository in $TESTTMP/foo/.git/
 Ignore the .hg directory within git:
   $ echo .hg >> .git/info/exclude
   $ echo alpha > alpha
   $ git add alpha
   $ gitcommit -am 'Add alpha'
   $ echo beta > beta
   $ git add beta
   $ gitcommit -am 'Add beta'
   $ echo gamma > gamma
   $ git status
   On branch master
   Untracked files:
     (use "git add <file>..." to include in what will be committed)
   	gamma
   
   nothing added to commit but untracked files present (use "git add" to track)
 
 Without creating the .hg, hg status fails:
   $ hg status
   abort: no repository found in '$TESTTMP/foo' (.hg not found)!
   [255]
 But if you run hg init --git, it works:
   $ hg init --git
   $ hg id --traceback
   heads mismatch, rebuilding dagcache
   3d9be8deba43 tip master
   $ hg status
   ? gamma
 Log works too:
   $ hg log
   changeset:   1:3d9be8deba43
   bookmark:    master
   tag:         tip
   user:        test <[e-mail]>
   date:        Mon Jan 01 00:00:11 2007 +0000
   summary:     Add beta
   
   changeset:   0:c5864c9d16fb
   user:        test <[e-mail]>
   date:        Mon Jan 01 00:00:10 2007 +0000
   summary:     Add alpha
   
 
 
 and bookmarks:
   $ hg bookmarks
    * master                    1:3d9be8deba43
 
 diff even works transparently in both systems:
   $ echo blah >> alpha
   $ git diff
   diff --git a/alpha b/alpha
   index 4a58007..faed1b7 100644
   --- a/alpha
   +++ b/alpha
   @@ -1* +1,2 @@ (glob)
    alpha
   +blah
   $ hg diff --git
   diff --git a/alpha b/alpha
   --- a/alpha
   +++ b/alpha
   @@ -1,1 +1,2 @@
    alpha
   +blah
 
 Remove a file, it shows as such:
   $ rm alpha
   $ hg status
   ! alpha
   ? gamma
 
 Revert works:
   $ hg revert alpha --traceback
   $ hg status
   ? gamma
   $ git status
   On branch master
   Untracked files:
     (use "git add <file>..." to include in what will be committed)
   	gamma
   
   nothing added to commit but untracked files present (use "git add" to track)
 
 Add shows sanely in both:
   $ hg add gamma
   $ hg status
   A gamma
   $ hg files
   alpha
   beta
   gamma
   $ git ls-files
   alpha
   beta
   gamma
   $ git status
   On branch master
   Changes to be committed:
     (use "git restore --staged <file>..." to unstage)
   	new file:   gamma
   
 
 forget does what it should as well:
   $ hg forget gamma
   $ hg status
   ? gamma
   $ git status
   On branch master
   Untracked files:
     (use "git add <file>..." to include in what will be committed)
   	gamma
   
   nothing added to commit but untracked files present (use "git add" to track)
 
 clean up untracked file
   $ rm gamma
 
 hg log FILE
 
   $ echo a >> alpha
   $ hg ci -m 'more alpha' --traceback --date '1583522787 18000'
   $ echo b >> beta
   $ hg ci -m 'more beta'
   heads mismatch, rebuilding dagcache
   $ echo a >> alpha
   $ hg ci -m 'even more alpha'
   heads mismatch, rebuilding dagcache
   $ hg log -G alpha
   heads mismatch, rebuilding dagcache
   @  changeset:   4:6626247b7dc8
   :  bookmark:    master
   :  tag:         tip
   :  user:        test <test>
   :  date:        Thu Jan 01 00:00:00 1970 +0000
   :  summary:     even more alpha
   :
   o  changeset:   2:a1983dd7fb19
   :  user:        test <test>
   :  date:        Fri Mar 06 14:26:27 2020 -0500
   :  summary:     more alpha
   :
   o  changeset:   0:c5864c9d16fb
      user:        test <[e-mail]>
      date:        Mon Jan 01 00:00:10 2007 +0000
      summary:     Add alpha
   
   $ hg log -G beta
   o  changeset:   3:d8ee22687733
   :  user:        test <test>
   :  date:        Thu Jan 01 00:00:00 1970 +0000
   :  summary:     more beta
   :
   o  changeset:   1:3d9be8deba43
   |  user:        test <[e-mail]>
   ~  date:        Mon Jan 01 00:00:11 2007 +0000
      summary:     Add beta
   
 
   $ hg log -r "children(3d9be8deba43)" -T"{node|short} {children}\n"
   a1983dd7fb19 3:d8ee22687733
 
 hg annotate
 
   $ hg annotate alpha
   0: alpha
   2: a
   4: a
   $ hg annotate beta
   1: beta
   3: b
 
 
 Files in subdirectories. TODO: case-folding support, make this `A`
 instead of `a`.
 
   $ mkdir a
   $ echo "This is file mu." > a/mu
   $ hg ci -A -m 'Introduce file a/mu'
   adding a/mu
 
 Both hg and git agree a/mu is part of the repo
 
   $ git ls-files
   a/mu
   alpha
   beta
   $ hg files
   a/mu
   alpha
   beta
 
 hg and git status both clean
 
   $ git status
   On branch master
   nothing to commit, working tree clean
   $ hg status
   heads mismatch, rebuilding dagcache
 
 
 node|shortest works correctly
   $ hg log -T '{node}\n' | sort
   3d9be8deba43482be2c81a4cb4be1f10d85fa8bc
   6626247b7dc8f231b183b8a4761c89139baca2ad
   a1983dd7fb19cbd83ad5a1c2fc8bf3d775dea12f
   ae1ab744f95bfd5b07cf573baef98a778058537b
   c5864c9d16fb3431fe2c175ff84dc6accdbb2c18
   d8ee22687733a1991813560b15128cd9734f4b48
   $ hg log -r ae1ab744f95bfd5b07cf573baef98a778058537b --template "{shortest(node,1)}\n"
   ae
 
 This coveres changelog.findmissing()
   $ hg merge --preview 3d9be8deba43
 
 This covers manifest.diff()
   $ hg diff -c 3d9be8deba43
   diff -r c5864c9d16fb -r 3d9be8deba43 beta
   --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
   +++ b/beta	Mon Jan 01 00:00:11 2007 +0000
   @@ -0,0 +1,1 @@
   +beta
 
 
+Interactive commit should work as expected
+
+  $ echo bar >> alpha
+  $ echo bar >> beta
+  $ hg commit -m "test interactive commit" -i --config ui.interactive=true --config ui.interface=text << EOF
+  > y
+  > y
+  > n
+  > EOF
+  diff --git a/alpha b/alpha
+  1 hunks, 1 lines changed
+  examine changes to 'alpha'?
+  (enter ? for help) [Ynesfdaq?] y
+  
+  @@ -1,3 +1,4 @@
+   alpha
+   a
+   a
+  +bar
+  record change 1/2 to 'alpha'?
+  (enter ? for help) [Ynesfdaq?] y
+  
+  diff --git a/beta b/beta
+  1 hunks, 1 lines changed
+  examine changes to 'beta'?
+  (enter ? for help) [Ynesfdaq?] n
+  
+Status should be consistent for both systems
+
+  $ hg status
+  heads mismatch, rebuilding dagcache
+  M beta
+  $ git status
+  On branch master
+  Changes not staged for commit:
+    (use "git add <file>..." to update what will be committed)
+    (use "git checkout -- <file>..." to discard changes in working directory)
+  
+  	modified:   beta
+  
+  no changes added to commit (use "git add" and/or "git commit -a")
+
+Contents of each commit should be the same
+
+  $ hg ex -r .
+  # HG changeset patch
+  # User test <test>
+  # Date 0 0
+  #      Thu Jan 01 00:00:00 1970 +0000
+  # Node ID 80adc61cf57e99f6a412d83fee6239d1556cefcf
+  # Parent  ae1ab744f95bfd5b07cf573baef98a778058537b
+  test interactive commit
+  
+  diff -r ae1ab744f95b -r 80adc61cf57e alpha
+  --- a/alpha	Thu Jan 01 00:00:00 1970 +0000
+  +++ b/alpha	Thu Jan 01 00:00:00 1970 +0000
+  @@ -1,3 +1,4 @@
+   alpha
+   a
+   a
+  +bar
+  $ git show
+  commit 80adc61cf57e99f6a412d83fee6239d1556cefcf
+  Author: test <test>
+  Date:   Thu Jan 1 00:00:00 1970 +0000
+  
+      test interactive commit
+  
+  diff --git a/alpha b/alpha
+  index d112a75..d2a2e9a 100644
+  --- a/alpha
+  +++ b/alpha
+  @@ -1,3 +1,4 @@
+   alpha
+   a
+   a
+  +bar
+
 Deleting files should also work (this was issue6398)
+  $ hg revert -r . --all
+  reverting beta
   $ hg rm beta
   $ hg ci -m 'remove beta'
+