diff tests/test-split.t @ 42856:3cf091843b4f

split: handle partial commit of renames when doing split or record (issue5723)

When using split or record, using either interface (text or curses), selecting
portions of the file to be committed/recorded did not work; the entire file was
treated as having been selected. This was because the logic for handling partial
application of the patches relies on knowing what files are "new with
modifications" and it doesn't treat "rename destination" as "new".

There was a complicating issue, however. We're relying on the patch header
specifying the copy from/to information, which works as long as the 'copy from'
file is there. In the case of renames, however, the 'rename from' file is *not*
there, so we need to add it back.

Differential Revision: https://phab.mercurial-scm.org/D6768

--- a/tests/test-split.t	Tue Aug 27 11:56:15 2019 -0700
+++ b/tests/test-split.t	Tue Aug 27 11:56:19 2019 -0700
@@ -790,6 +790,96 @@
   [255]
 #endif
 
+Test that splitting moves works properly (issue5723)
+----------------------------------------------------
+
+  $ hg init $TESTTMP/issue5723-mv
+  $ cd $TESTTMP/issue5723-mv
+  $ printf '1\n2\n' > file
+  $ hg ci -qAm initial
+  $ hg mv file file2
+  $ printf 'a\nb\n1\n2\n3\n4\n' > file2
+  $ cat > $TESTTMP/messages <<EOF
+  > split1, keeping only the numbered lines
+  > --
+  > split2, keeping the lettered lines
+  > EOF
+  $ hg ci -m 'move and modify'
+  $ printf 'y\nn\na\na\n' | hg split
+  diff --git a/file b/file2
+  rename from file
+  rename to file2
+  2 hunks, 4 lines changed
+  examine changes to 'file' and 'file2'?
+  (enter ? for help) [Ynesfdaq?] y
+  
+  @@ -0,0 +1,2 @@
+  +a
+  +b
+  record change 1/2 to 'file2'?
+  (enter ? for help) [Ynesfdaq?] n
+  
+  @@ -2,0 +5,2 @@ 2
+  +3
+  +4
+  record change 2/2 to 'file2'?
+  (enter ? for help) [Ynesfdaq?] a
+  
+  EDITOR: HG: Splitting 8c42fa635116. Write commit message for the first split changeset.
+  EDITOR: move and modify
+  EDITOR: 
+  EDITOR: 
+  EDITOR: HG: Enter commit message.  Lines beginning with 'HG:' are removed.
+  EDITOR: HG: Leave message empty to abort commit.
+  EDITOR: HG: --
+  EDITOR: HG: user: test
+  EDITOR: HG: branch 'default'
+  EDITOR: HG: added file2
+  EDITOR: HG: removed file
+  created new head
+  diff --git a/file2 b/file2
+  1 hunks, 2 lines changed
+  examine changes to 'file2'?
+  (enter ? for help) [Ynesfdaq?] a
+  
+  EDITOR: HG: Splitting 8c42fa635116. So far it has been split into:
+  EDITOR: HG: - 478be2a70c27: split1, keeping only the numbered lines
+  EDITOR: HG: Write commit message for the next split changeset.
+  EDITOR: move and modify
+  EDITOR: 
+  EDITOR: 
+  EDITOR: HG: Enter commit message.  Lines beginning with 'HG:' are removed.
+  EDITOR: HG: Leave message empty to abort commit.
+  EDITOR: HG: --
+  EDITOR: HG: user: test
+  EDITOR: HG: branch 'default'
+  EDITOR: HG: changed file2
+  saved backup bundle to $TESTTMP/issue5723-mv/.hg/strip-backup/8c42fa635116-a38044d4-split.hg (obsstore-off !)
+  $ hg log -T '{desc}: {files%"{file} "}\n'
+  split2, keeping the lettered lines: file2 
+  split1, keeping only the numbered lines: file file2 
+  initial: file 
+  $ cat file2
+  a
+  b
+  1
+  2
+  3
+  4
+  $ hg cat -r ".^" file2
+  1
+  2
+  3
+  4
+  $ hg cat -r . file2
+  a
+  b
+  1
+  2
+  3
+  4
+
+
 Test that splitting copies works properly (issue5723)
 ----------------------------------------------------